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砷化氫比色法(又称Gutzeit法),曾被很多人研究过,它的特点是灵敏度高——0.01γAs/50毫升,且较快速,常用于痕量砷的測定。在砷化氫比色法中,砷化氢气体是由鋅粒与含砷及二氯化錫的盐酸(或硫酸)溶液反应而产生,但是关于反应溶液的组成,特別是砷的价态及应否含有Fe~(++)等問題,在以往文献中尚有分歧。不同作者所提供的測定条件亦不同,如Hillebrand,Vogel,Scott等認为反应溶
Arsine colorimetry (also known as Gutzeit method), has been studied by many people, it is characterized by high sensitivity - 0.01γAs / 50 ml, and faster, commonly used in the determination of trace amounts of arsenic. In the arsine colorimetric method, arsine gas is produced by the reaction of zinc particles with a solution of hydrochloric acid (or sulfuric acid) containing arsenic and tin dichloride. However, regarding the composition of the reaction solution, in particular, the valence of arsenic and Should contain Fe ~ (++) and other issues, there are still differences in the literature. Different authors provide different assay conditions, such as Hillebrand, Vogel, Scott, etc. that the reaction solution