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原子荧光光谱分析是20世纪60年代中期提出并发展起来的新型光谱分析技术,是一种优良的痕量分析技术。硒是人体所必须的微量元素之一,砷是人体非必需元素,三价砷化合物比五价砷化合物毒性更强,且有机砷对人体和生物都有毒。本文采用氢化物-原子荧光光谱法测定试样中的Se和As,在最佳测量条件下,Se和As的线性范围均为0-200ug.L-1,检出限Se和As分别为0.16ug.L-1和0.095 ug.L-1。回收率为92.4%～104.7%。
Atomic fluorescence spectroscopy is a novel spectroscopic technique proposed and developed in the mid-1960s and is an excellent trace analysis technique. Selenium is one of the trace elements essential for the human body. Arsenic is a non-essential element of the human body. Trivalent arsenic compounds are more toxic than pentavalent arsenic compounds, and organic arsenic is toxic to humans and organisms. In this paper, the determination of Se and As in the sample by hydride generation-atomic fluorescence spectrometry, under the optimal conditions, the linear range of Se and As are 0-200ug.L-1, the detection limits Se and As were 0.16 ug.L-1 and 0.095 ug.L-1. The recovery rate was 92.4% ~ 104.7%.