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.
出处
《化学研究与应用》
CAS
CSCD
北大核心
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)
关键词
树枝状大分子
己二胺
丙烯酸甲酯
破乳性能
electrodeposition
tungsten coil electrothermal atomic absorption spectroscopy
gold
foam preconcentration
