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冷原子吸收法测定环境样品的汞已经广泛地应用,过去都是使用氯化亚锡做还原剂,将汞离子还原成元素汞再进行测定。但氯化亚锡不稳定,须用盐酸或硫酸在临用前配制,并且它在水中的溶解度很小,所用过的玻璃器皿又不易洗涤干净,给操作者带来较大的麻烦。国外有资料介绍次氯酸钠具有与氯化亚锡相同的还原能力,它在酸性的条件下同样可以
Cold atomic absorption spectrometry for the determination of mercury in environmental samples has been widely used. In the past, stannous chloride was used as a reducing agent to reduce mercury ions to elemental mercury and then determined. However, stannous chloride is not stable, hydrochloric acid or sulfuric acid to be prepared before use, and its solubility in water is very small, used glassware is not easy to clean, bringing greater trouble to the operator. Introduction of foreign information Sodium hypochlorite has the same reduction ability with stannous chloride, which under the acidic conditions can also be