A Novel Method for the Polarographic Determination of Trace Nitrite in Water

A method for polarographic determination of nitrites in water is developed. Nitrites firstly react with resorcinol, then the nitroso product reacts with nickel ion to form a complex, which can be reduced on dropping mercury electrode to produce a sensitive polarographic wave. The current signal has...

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Bibliographic Details
Published in:Russian journal of electrochemistry 2022-01, Vol.58 (1), p.32-42
Main Authors: Tian, Y. S., Li, X. H., Zhang, D. F., Lu, L., Xu, Y. G., An, C. W.
Format: Article
Language:English
Subjects:
Chemistry
Chemistry and Materials Science
Electrochemistry
Nitrites
Physical Chemistry
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Summary:A method for polarographic determination of nitrites in water is developed. Nitrites firstly react with resorcinol, then the nitroso product reacts with nickel ion to form a complex, which can be reduced on dropping mercury electrode to produce a sensitive polarographic wave. The current signal has an excellent linear relation with the concentration of nitrite, the detection limit was 0.22 μg/L. The relative standard deviation is 2.80% and the recoveries were 95.0–102.9% at a nitrite concentration of 1.13 μg/L, most of the potential interferents are tolerated. The method is suitable for the determination of trace nitrite in water.
ISSN:1023-1935
1608-3342
DOI:10.1134/S1023193522010153