摘要
本文建立了测定矿石中金的测定新方法。经王水溶样后,用异戊醇为萃取剂富集分离出Au(III),在pH=4的HAc-NaAc介质中,经TMK-正丁醇显色,在540nm波长处用分光光度法测定了矿石中金的含量。本法表观摩尔吸光系数为1.29×105L.mol-1.cm-1,在金含量为0～5μg/5mL符合比尔定律。经与原子吸收法测得值相比较和回收率验证,结果令人满意。
A new determination method of gold in ores was studied. The sample is dissolved with aqua regia. The gold is extracted with isoamyl-alcohol and determinated by spectrophotometry with TMK-n- butyl-alcohol as colour reagent at pH = 4 in the media of acetic acid-sodium acetate. The Beer＇s law is obeyed in the range of 0-5μg/5mL for gold. The results are satisfactory.
出处
《贵金属》
CAS
CSCD
2006年第4期53-55,60,共4页
Precious Metals
基金
江西省教育厅赣财教[2003]73号文资助项目
关键词
分析化学
金
分光光度法
异戊醇
Analytic chemistry
Gold
Spectrophotometry
Isoamyl-alcohol
