化工进展2018，Vol.37Issue(7)：2854-2859,6.DOI:10.16085/j.issn.1000-6613.2017-1825
铜阳极泥脱铜渣中金、银、钯含量测定
Determination of gold,silver and palladium in copper anode low grade copper slag
摘要
Abstract
The method of continuous determination of gold,silver and palladium in copper anode low grade copper slag was established and compared with the fire test method. First,the copper anode low grade copper slag was digested with nitric acid+EDTA+tartaric acid to obtain a digestion solution containing silver,palladium and a small amount of gold. The effects of nitric acid,EDTA and tartaric acid dosage on digestion were investigated. The results showed that the digestion was the best when the dosage of nitric acid,EDTA and tartaric acid were 30mL,3mL and 1.5g,respectively. Then,the residue was subjected to secondary digestion with aqua regia to obtain a digestion solution containing gold and a small amount of silver and palladium. The effects of aqua regia dosage on digestion were investigated. The results showed that the amount of aqua regia required to complete the digestion was 15mL. Finally,the contents of gold, silver and palladium in digestion solution were determined by flame atomic absorption spectrometer. The relative standard deviations of Au,Ag and Pd in the copper anode low grade copper slag were less than 1% (n=10),and the recoveries were between 95.57% and 98.70% by this method. The experimental results are accurate,reliable and reproducible,which is consistent with the results of fire test method.关键词
废物处理/环境/化学分析/铜阳极泥脱铜渣/金/银/钯Key words
waste treatment/environment/chemical analysis/copper anode low grade copper slag/gold/silver/palladium分类
化学化工引用本文复制引用
王豪,蹇瑞红,刘维桥,潘君丽,刘玉海,周全法..铜阳极泥脱铜渣中金、银、钯含量测定[J].化工进展,2018,37(7):2854-2859,6.基金项目
江苏省产学研前瞻性联合研究项目(BY2016030-21)及江苏理工学院人才引进项目(kyy16025). （BY2016030-21）
