| Abstract: |
ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a ConclusionREEs exhibit similar chemical and physical properties. REE and their isotopes have important uses and applications in different fields. The accurate and precise analysis of REEs at a wide range of concentrations is a vital consideration in all types and pSeveral rock samples were selected from the Precambrian rocks of Egypt. Each sample was divided into two portions. One portion, from which REEs were separated by different techniques of ion exchange resins, was analyzed by ICP-MS in Egypt. The other portiREEs separated by cation- or anion–exchange resins yielded data that show significant deviation from the data obtained on the same samples from Canada. Separation of REEs using mixed cation - anion exchange resins yielded better results (more precise). EvFour U.S. Geological Survey standard samples were used to evaluate the accuracy of the results obtained by the ICP-MS in the Egyptian laboratory.The mixed cation - anion exchange resin method was used to separate the REEs from geological samples, which were used to measure isotope ratios (143Nd/144Nd and 147Sm/144Nd) to determine the age of two granite rock samples which are nearly 637.6 ×106 y a
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