Z-2000偏振塞曼石墨炉原子吸收光谱仪测定地质样品中的微量金  

Determination of trace gold in geological samples by Z-2000 polarized Zeeman graphite furnace atomic absorption spectrometry

作　　者：孟令晶[1] 苏循志 盛宏宇[1] 卢安民[1] 卢兵[1] 

机构地区：[1]中国人民武装警察部队黄金第三支队,黑龙江哈尔滨150086 [2]中石化华东石油局试采大队油田开发研究所,江苏泰州225300

出　　处：《化学工程师》2009年第10期20-22,共3页Chemical Engineer

摘　　要：采用试样经灼烧,王水分解样品,聚氨脂泡沫塑料富集,硫脲解脱,Z-2000偏振塞曼石墨炉原子吸收光谱仪测定微量金。对于石墨管的选择、干燥、原子化、灰化、净化温度和时间进行了讨论,以及影响金的解脱效率因素,与发射光谱法对比等条件的研究。该方法的检出限为0.17ng·g-1,精密度低于8.0%,经国家一级分析标准样品验证,结果与标准值相符。Trace gold was determined by means of atomic absorption spectrometer with Z-2000 polarized Zee- man graphite furnace after the samples have been burned, dissolved by aqua regia, collected by polyurethane foam materials and desorbed by thiourea. The choice of graphite tube, drying, atomization, gray, and purification of tem- perature and time were discussed, as well as the factors that affected the efficiency of gold＇s release and the condi- tions that was compared with emission spectroscopy mothod were studied . The detecting limit of which was O.17ng / g, the precision was less than 8.0%.This method has been verified by the analysis of the nationa standard samples ,and the results were in line with the standard value.

关 键 词：偏振塞曼 石墨炉原子吸收光谱仪 硫脲解脱 微量金 

分 类 号：O657.31[理学—分析化学]