Use of photochemical reactions in flow injection: determination of oxalate in urine |
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| Authors: | L E Leon A Ríos M D Luque de Castro M Valcárcel |
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| Institution: | Department of Analytical Chemistry, Faculty of Sciences, University of Córdoba, Spain. |
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| Abstract: | The use of photochemical reactions in flow injection (FI) is reported. The irradiation of an FI reactor with a suitable source facilitates the development of the iron(III)-oxalate reaction, allowing the amperometric determination of the anion in the range 1.0-13.0 micrograms ml-1, with a relative standard deviation of 1.1% and a sampling frequency of 40 h-1. The proposed method was applied successfully to the determination of oxalate in urine samples. |
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