火焰原子吸收法测定栽培小茴香中13种金属元素含量  

Determination of Thirteen Metal Elements in the Plant Foeniculum Vulgare Mill.by Flame Atomic Absorption Spectrophotometry

作　　者：薛国庆[1] 刘青 韩玉琦[1] 魏惠广[1] 董婷[1] 

机构地区：[1]河西学院化学系西部资源环境化学重点实验室,甘肃张掖734000 [2]甘肃有色地质勘探四队,甘肃张掖734012

出　　处：《光谱学与光谱分析》2006年第10期1935-1938,共4页Spectroscopy and Spectral Analysis

基　　金：甘肃省科技攻关项目(2GS035-A43-048-05)资助

摘　　要：采用先灰化、再用硝酸-高氯酸（φ4：1）常压微沸条件下消解小茴香样品，应用火焰原子吸收法测定栽培小茴香中的金属元素Na，K，Mg，Ca，Cu，Zn，Mn，Fe，Co，Ni，Cd，Cr和Pb含量，研究了测定不同元素的仪器最佳工作条件，并作了方法的准确性和精密度考察。结果表明，栽培小茴香中Na，K，Mg，Ca，Mn，Fe，Cu，Zn和Pb含量分别为1508．7，27653．0，2036．0，4848．1，24．8，323．5，15．2，23．7和10．8μg·g^-1；Ni，Co，CA和Cr未检出。方法的加标回收率为97．45％～102．50％，相对标准偏差（n=9）为0．34％～2．77％。测定方法简单易行，方便快捷，结果令人满意。The obiective of the paper is to determine the amount of metal elements of Na, K, Mg, Ca, Cu, Zn, Mn, Fe, Co, Ni, Cd, Cr and Pb in the planted Foeniculum vulgate Mill. by flame atomic absorption spectrophotometry（FAAS）, after the cinefaction and the digestion with HNO3-HClO4 （φ4 ： 1） at 90-95℃ and normal pressure. The optimum parameters of FAAS and the effects of solution medium on the results were investigated. The analytical results show that the amount of Na, K, Mg, Ca, Mn, Fe, Cu, Zn and Pb was 1 508. 7, 27 653.0, 2 036. 0, 4 848. 1, 24. 8, 323. 5, 15.2, 23.7 and 10. 8μg·g^-1 , respectively, and that of Co, Ni, CA and Cr was not checked out in the samples. The recovery of standard addition is 97. 45%-102.50%, the relative standard deviation（n=9） was 0.34%-2.77%. The characteristic method is quick, simple and convenient and the results are satisfactory.

关 键 词：火焰原子吸收光谱法 栽培小茴香 金属元素 

分 类 号：O657.3[理学—分析化学]