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A new potentiometric membrane sensor responsive to uric acid
Faculty
Science
Year:
1997
Type of Publication:
Article
Pages:
2175-2187
Authors:
Elmosallamy, MAF, Mohamed, RA
Journal:
ANALYTICAL LETTERS MARCEL DEKKER INC
Volume:
30
Research Area:
Chemistry
ISSN
ISI:A1997XU21600004
Keywords :
uric acid, sensor, standard addition method, serum, urine
Abstract:
A new potentiometric membrane sensor responsive to uric acid has been developed. The membrane sensor is based on aliquat-urate, as an ion pair, and 2-NPOE as a plasticizer. The sensor exhibits fast, stable, and Nernstian response for the hydrogen urate over the concentration range 10(-2)-10(-5)M and pH 5-7. Many substances and ions cause no interference. A standard addition method has been used for determination of uric acid in serum, urine, and commercial standard uric acid and the results of determination were 3.0 to 7.2 mg\%, 0.21 to 1.04 mg\% and 4.5 X 10(-5) to 4.9 X 10(-3) mg\%, respectively.
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