污泥上培植的黑麦草中微量元素的测定

Determination of Trace Elements in Lolium L. by Flame Atomic Absorption Spectrometry

对污泥增培黑麦草中锌、铜、镍、铬、铅的测定方法进行了研究,样品用HClO4-HNO3(1+4)进行处理,并用火焰原子吸收光谱法对锌、铜、镍、铬、铅进行了测定。结果表明:该法准确、回收率高,平均回收率分别为:锌90.3%、铜92.0%、镍88.4%、铅85.1%、铬82.6%。

A method for the determination of Zn, Cu, Ni, Pb and Cr in Lolium L. was proposed. After sample was digested by HNO3 and HClO4 （4： 1）, the content of Zn, Cu, Ni, Pb and Cr was determined by FAAS. The method is accurate and the recovery for the spiked sample was 90.3%, 92.0%, 88. 4%, 85.1% and 82.6% for Zn, Cu, Ni, Pb and Cr, respectively.