Chemistry Letters
Online ISSN : 1348-0715
Print ISSN : 0366-7022
ISSN-L : 0366-7022
GAS CHROMATOGRAPHIC DETERMINATION OF NITRITE ION IN WATER USING THE SANDMEYER REACTION
Takeji ChikamotoShogo Nagata
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1980 Volume 9 Issue 6 Pages 737-738

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Abstract

An improved gas chromatographic method is presented for the determination of trace amount of nitrite ion (NO2) in water. The method is based on the Sandmeyer reaction, i.e., the diazotization of p-bromoaniline by NO2 followed by reaction with CuCl in hydrochloric acid to form p-bromochlorobenzene. The derivative is determined by gas chromatography, employing an electron capture detector. The detection limit for NO2 is 0.5 ng/ml (ppb).

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