钨钼矿中痕量金的化学光谱法测定  

DETERMINATION OF TRACE GOLD IN TUNGSTEN AND MOLYBDENUM ORES USING AES WITH ACTIVE CARBON ABSORBENT

作　　者：刘玉纯 刘薇[1] 刘军[1] 

机构地区：[1]安徽省地质实验研究所,安徽合肥230001

出　　处：《安徽地质》2007年第4期263-264,共2页Geology of Anhui

摘　　要：采用化学光谱法测定钨钼矿样品中痕量金时,活性炭在富集金的同时也富集了钨、钼等杂质元素,灰份中这些杂质元素均以氧化物形式存在,对铂(内标)的激发行为有明显的抑制作用,表现为铂的黑度值显著偏低,因而不能沿用铂作为测定金的内标,另外分析线Au267.6nm还受钨的谱线叠加干扰。鉴于此,作者采用干扰较少的Au242.8nm/左背景作为分析线对进行测定,测定值与泡塑吸附富集—ICP-MS的结果一致。Both tungsten and molybdenum are absorbed at the same time when carbon powder is used to take in gold in sample solution. A great deal of tungsten and molybdenum in ashes prevents platinum from being evaporated so that blackness of platinum becomes very low. Therefore, platinum is unfit for internal standard to determine gold as usual. In this paper, the left background of Au242.8nm was studied as internal standard for analysing gold. This method was experimentally proved in accordance with chemical analysis.

关 键 词：钨钼矿 痕量金 化学光谱法 

分 类 号：TG146.3[一般工业技术—材料科学与工程]