电沉积-钨丝电热原子吸收光谱法测定地质样品中痕量金  

Determination of trace gold in geological samples by Electrodeposition-tungsten coil electrothermal atomic absorption spectrometry

作　　者：徐进勇 曾国强 葛良全 

机构地区：[1]四川省地学核技术重点实验室,四川成都610059 [2]核技术与自动化工程学院,四川成都610059

出　　处：《化学研究与应用》2008年第4期495-498,共4页Chemical Research and Application

基　　金：黑龙江省教育厅资助项目(10551007)

摘　　要：Abstract: Trace gold in geological samples was determined by electrothermal atomic absorption spectrometry after electrodeposition preconcentration on the tungsten coil used as a working electrode and atomizer.After gold in sample was preconcentrated by foam,the foam was pyrolyzed.The electrolysis of gold was performed under at-700 mV(relative to a saturated Hg/Hg2Cl2 reference electrode) for 2 min.The limit of detection for the gold sample was 0.05 ng/g,while the upper linear dynamic range was 20 μg/L for gold standard slolution.Trace gold in geological samples was determined by electrothermal atomic absorption spectrometry after electrodeposition preconcentration on the tungsten coil used as a working electrode and atomizer. After gold in sample was preconcentrated by foam, the foam was pyrolyzed. The electrolysis of gold was performed under at-700 mV （ relative to a saturated Hg/Hg2Cl2 reference electrode） for 2 min. The limit of detection for the gold sample was 0. 05 ng/g,while the upper linear dynamic range was 20 μg/L for gold standard slolution.

关 键 词：树枝状大分子 己二胺 丙烯酸甲酯 破乳性能 

分 类 号：O657.31[理学—分析化学]