含稀有贵金属铜料中金的分析方法研究  

Study on assaying method of gold in copper material containing rare and precious metals

作　　者：陈小燕[1] 邵从和[1] 

机构地区：[1]安徽省铜陵有色金属公司设计研究院

出　　处：《黄金》2000年第2期46-47,共2页Gold

摘　　要：含稀有贵金属铜料经高温焙烧后，混酸分解。在稀王水介质中，经聚氨脂泡沫塑料流动吸附，硫脲解脱后，于原子吸收光谱仪波长２４２－８ｎｍ处，以空气－乙炔火焰测量金的吸光度，按标准曲线法计算金量。该方法相对标准偏差为１－７３％～６－８５％，标准加入回收率为９７－０％～１０１－７％。The copper material containing rare and precious metals is roasted in high temperature and decomposed by mixed acid.Through adsorption by polyurethane and foam plastics in turn and desorption by thiourea in the medium of aqua regia,the light adsorptivity of gold is determined at the point of wave length 242.8nm of atomic adsorption spectrometer by air acetylene flame.The standard curve method is used to calculate the gold quantity.The RSD of this method is 1.73%～6 85% and the recovery rate of standard addition of copper material is 97 0%～101 7%

关 键 词：铜料 流动吸附 火焰原子吸收 金 分析方法 

分 类 号：O614.123[理学—无机化学]