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近年来,氢化物发生原子吸收光谱法,已被用于As、Sb、Bi、Se和Te等元素的测定,其中以As和Se的研究最多,并已用于冶金地质、环境保护等各个部门。铅锑合金中Se的测定文献报道不多,一些作者只是就Pb或Sb对Se的干扰情况作过探讨,并指出:Pb对Se的影响不明显,而Sb对Se的干扰却十分严重。本文利用巯基棉对多种微量元素的吸附性质,采用巯基棉分离,消除了Sb对Se的干扰。方法特征量为0.0008μg/ml,工作曲线线性范围为0.06μg/ml,相对标准偏差为5％左右,回收率在97—101％之间。
In recent years, hydride generation atomic absorption spectrometry has been used for the determination of As, Sb, Bi, Se and Te, among which As and Se are the most studied, and have been used in metallurgy geology, environmental protection and other departments . However, some authors only discuss the interference of Pb or Sb on Se, and point out that the influence of Pb on Se is not obvious, but the interference of Sb on Se is very serious. In this paper, mercapto cotton adsorption properties of trace elements, the use of mercaptan cotton separation, eliminating the interference of Sb on Se. The method characteristic quantity is 0.0008μg / ml, the linear range of working curve is 0.06μg / ml, the relative standard deviation is about 5% and the recovery is between 97-101%.