氢化物原子荧光光谱法测定药用动物角中的痕量砷和汞

[Determination of trace arsenic and mercury in medicine animal horns by hydride atomic fluorescence spectrometry].

作者信息

Suo You-rui, Li Tian-cai

机构信息

Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou 73000, China.

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 2002 Oct;22(5):850-2.

PMID:12938449

Abstract

A hydride atomic fluorescence spectrometry has been developed for the determination of trace arsenic and mercury in medicinal animal horns. This method was simple, rapid and sensitive. The samples were digested with HNO3-HClO4(5:1), under the optimum conditions, the allowable amounts of 26 coexist elements were determined. The detection limits of this method were as follows: As 1.50 ng.mL-1, Hg 0.80 ng.mL-1. The relative standard deviations of 11 determinations were 1.2%-2.3% for As and 2.5%-4.7% for Hg. The recoveries were 98.9%-103.8% for As and 95.4%-105.0% for Hg.

摘要

建立了氢化物原子荧光光谱法测定药用动物角中的痕量砷和汞。该方法简便、快速、灵敏。样品用HNO3-HClO4（5:1）消解，在最佳条件下，测定了26种共存元素的允许量。该方法的检出限如下：砷为1.50 ng·mL-1，汞为0.80 ng·mL-1。11次测定的相对标准偏差，砷为1.2%-2.3%，汞为2.5%-4.7%。砷的回收率为98.9%-103.8%，汞的回收率为95.4%-105.0%。