摘要
含金试样经王水溶解,溶液经活性炭吸附-碘量法测定溶液中的金;残渣经氢氟酸和王水再溶解,活性炭富集-火焰原子吸收测定残渣中的金;两项结果相加作为样品中金的总量。方法用于金的地质标样定值分析,结果与标准值吻合(E<3s)。
A combined sample digestion method was used in determination of gold in certification of standard reference gold material. The sample was digested with aqua regia and gold in the digestive sample was determined by iodometry after preconcentration with activated carbon adsorption. The remander was digested with HF-aqua regia and gold in the remnants was determined by flame-AAS after preconcentration with activated carbon adsorption. Total gold in the sample was sum of those from digestive part and the remnants of the sample. The results of gold in the standard reference gold materials were in agreement with certified values.
出处
《岩矿测试》
CAS
CSCD
北大核心
2004年第1期75-76,共2页
Rock and Mineral Analysis
基金
武警黄金指挥部中国金矿志项目(2001~2002)之金的分析技术
关键词
金
王水
氢氟酸
活性炭
gold
aqua regia
hydrofluoric acid
activated carbon
