论文部分内容阅读
利用砷化氢的发生以测定砷约在100年前就在分析化学中得到应用。1969年Holak首先将砷化氢导入氩氢焰中,并以原子吸收法测定,巧妙地将这个古老的方法与现代化的原子光谱法结合起来。1972年Braman用硼氢化钠作还原剂,在酸性溶液中产生砷及锑的氢化物,并用氩气带入放电管中激发以发射光谱法测定。硼氢化钠的引入使得氢化物法可以测定的元素扩大到砷、锑、铋、锡、硒、碲、铅、锗等八个元素,由于这些元素在采用常规的原子光谱
The use of arsine for the determination of arsenic has been used in analytical chemistry almost 100 years ago. In 1969 Holak first introduced arsine into argon-hydrogen flame and determined by atomic absorption spectroscopy, cleverly combining this ancient method with modern atomic spectroscopy. Braman used sodium borohydride as a reducing agent in 1972 to produce arsenic and antimony hydride in an acidic solution and was excited with an argon gas into a discharge tube for emission spectrometry. The introduction of sodium borohydride hydride method allows the determination of the elements can be expanded to arsenic, antimony, bismuth, tin, selenium, tellurium, lead, germanium and other eight elements, since these elements in the use of conventional atomic spectroscopy