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水中硝酸盐氮的分光光度法测定有酚化合物的硝基化法〔１，２〕，变色酸法〔３〕，二磺酸酚法〔４〕等。目前常用经典方法二磺酸酚法，氯离子干扰严重，样品的预处理麻烦费时。我们利用间苯二酚分光光度法测定硝酸盐氮，取得较好效果，现介绍如下。原理在酸性介质中，硝酸...
Spectrophotometric determination of nitrate in water with phenolic compounds nitration [1,2], chromogenic acid 〔3〕, disulfonic acid phenol 〔4〕 and so on. At present, the classic method of disulfonic acid phenol method, chloride interference serious, sample preparation time-consuming cumbersome. We use the resorcinol spectrophotometric determination of nitrate nitrogen, and achieved good results, are presented below. Principle in acidic medium, nitric acid ...