流动注射-氢化物发生原子吸收光谱法测定涂料中的As、Sb、Se和Hg

Determination of As,Sb,Se and Hg in paintings by flow injection-hydride generation-atomic absorption spectrometry.

将流动注射、氢化物发生技术与原子吸收分光光度法有机地结合起来 ,建立了一种测定涂料中微量As、Sb、Se、Hg总含量的方法 ,还在模仿人胃酸(0 07mol/L盐酸溶液)的条件下建立了一种测定这些元素可溶量的方法。方法用于实际样品测定具有快速、高效和灵敏的特点 ,对As、Sb、Se、Hg检测的相对标准差(n=10)分别为4 22 %、2 02 %、3 72 %和2 98 % ,试样加标回收率分别为98 9 %～101 6 % ,99 0 %～102 6 % ,99 2 %～101 4 %和99 1 %～101 3 %。

A method of flow injection_hydride generation_atomic absorption spectrometry has been established for the determination of trace As,Sb,Se and Hg in paintings.Operational conditions (acidity,NaBH4 concentration,carrier flow rate) were optimized.The RSDs(n=10)were 4.22%,2.02%,3.72% and 2.98%, and the recoveries of standard addition were 98.9%～101.6%,99.0%～102.6%,99.2%～101.4% and 99.1%～101.3% for As,Sb,Se and Hg, respectively.