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关于微量砷、硒测定资料,已有报导,其中加藤研作等人用硝酸银浸过的试纸吸附生成的硒化氢,然后用χ线荧光测定。本文探索了一种新的灵敏快速测定法。试验了将溶液中硒转化成氢化物的各种条件,并对硒化氢吸收体系的组成、性能、生成络合物的稳定性等进行探讨。为了同时测定砷、硒,对反应溶液的酸度、体积、砷、硒价态等条件也进行了试验。本方法是利用生成的硒化氢将吸收液中的高价钼还原为低价后,形成一种蓝色
About trace arsenic, selenium determination data, it has been reported, including Kato research et al. Silver nitrate immersed test paper adsorption of hydrogen selenide, and then χ-ray fluorescence determination. This article explores a new rapid and sensitive assay. The conditions for the conversion of selenium to hydride in solution were investigated, and the composition, properties and the stability of the resulting complexes were also discussed. In order to simultaneously determine arsenic, selenium, the reaction solution acidity, volume, arsenic, selenium valence conditions were also tested. The method is to use the generated hydrogen selenide to reduce the high-priced molybdenum in the absorbing solution to a low price to form a blue