火焰原子吸收光谱法（FAAS）测定锁阳中15种金属元素

[Determination of fifteen metal elements in Cynomorium songaricum by flame atomic absorption spectrophotometry (FAAS)].

作者信息

Xue Guo-qing, Liu Qing, Ren Xue-feng, Han Yu-qi

机构信息

Department of Chemistry, Hexi University, Zhangye 734000, China.

出版信息

Guang Pu Xue Yu Guang Pu Fen Xi. 2004 Nov;24(11):1461-3.

PMID:15762505

Abstract

A FAAS method was established for the determination of Na, K, Mg, Ca, Cu, Zn, Fe, Mn, Ni, Co, Pb, Cr, Cd, Ag and Au in Cynomorium songaricum after digestion with HNO3-HClO4 (phi 4:1) at 90-95 degrees C and at normal pressure. In this paper, the parameters in FAAS were studied. The analytical results of Na, K, Mg, Ca, Fe, Zn, Cu, Mn, Pb, Ni and Ag were 13,572.0, 14,260.0, 358.3, 168.3, 238.5, 19.4, 5.9, 3.4, 2.6, 1.3 and 0.4 microg x g(-1) respectively and Co, Cr, Cd and Au were not found in the samples. The results showed that the recovery of standard addition was 97.8%-104.5%, and the relative standard deviation (n = 9) was 0.2%-5.0%. The method is fast, simple and convenient. The results were satisfactory.

摘要

建立了一种火焰原子吸收光谱法（FAAS），用于测定锁阳中钠、钾、镁、钙、铜、锌、铁、锰、镍、钴、铅、铬、镉、银和金的含量。样品经硝酸-高氯酸（体积比4:1）在90-95℃常压下消解后进行测定。本文研究了火焰原子吸收光谱法的参数。钠、钾、镁、钙、铁、锌、铜、锰、铅、镍和银的分析结果分别为13572.0、14260.0、358.3、168.3、238.5、19.4、5.9、3.4、2.6、1.3和0.4μg·g⁻¹，样品中未检出钴、铬、镉和金。结果表明，标准加入回收率为97.8%-104.5%，相对标准偏差（n = 9）为0.2%-5.0%。该方法快速、简便，结果令人满意。