SPECTROPHOTOMETRIC DETERMINATION OF NITRITE WITH RHO-AMINOPHENYLMERCAPTOACETIC ACID CHROMOTROPIC-ACID

被引：0
|
作者：
RATHORE, DPS
TARAFDER, PK
机构：
来源：
JOURNAL OF THE INDIAN CHEMICAL SOCIETY | 1990年 / 67卷 / 03期
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中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A new colour reaction for the determination of nitrite is described investigated. Nitrite reacts with p-aminophenylmercaptoacetic acid in the presence of hydrochloric acid to form a diazonium cation, which is subsequently coupled with chromotropic acid disodium salt dihydrate in alkaline medium to form a reddish azo dye which on acidification with hydrochloric acid produces a purple coloured product. The method is suitable for the determination of nitrite in the range 0.02-20.-mu-g ml-1. The optimum reaction condition for full colour development and the effect of variables have been studied.
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页码：231 / 233
页数：3
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