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本工作研究了用分光光度法测定水溶液以及30%TBP-煤油中的NO_2~-含量。在HCl-NaAc(pH～1.3)水相体系中,NO_2~-与对氨基苯磺酸进行重氮化反应,5分后再与N-(1-萘基)-乙二胺盐酸盐进行偶联反应,生成紫红色偶氮化合物。通过测定该化
This work investigated the spectrophotometric determination of NO 2 - in aqueous solution and 30% TBP-kerosene. In the aqueous system of HCl-NaAc (pH ~ 1.3), NO_2 ~ - was diazotized with p-aminobenzene sulfonic acid and reacted with N- (1-naphthyl) -ethylenediamine hydrochloride Coupling reaction, generating azo red azo compounds. By measuring this