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Simulataneous determination of nitrite and nitrate in water using flow-injection biamperometry

✍ Scribed by Marek Trojanowicz; Wojciech Matuszewski; Bogdan Szostek; Jacek Michałowski

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
613 KB
Volume
261
Category
Article
ISSN
0003-2670

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✦ Synopsis

DetectIon unth two polarized platmum wne electrodes 1s based on the oxldatlon of lodlde by mtnte The current IS proportlonal to the amount of lodme formed The Injected sample is spht m a flow-mlection mamfold mto two segments One of them 1s transported through a reductor mmlcolumn contammg coppenzed cadmium, where reduction of mtrate to mtnte occurs The effects of mterfermg species such as C&I), Fe(III), Cr(VI) and residual chlorme were exanuned and procedures for their ehmmatlon are proposed With a samphng rate of 15 h-l, detectlon hmlts of 40 and 70 pg 1-l were obtamed for mtnte and mtrate, respectrvely

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