摘要
样品经王水分解,硫脲提取,石墨炉原子吸收光谱法测定化探样品中的微量银。方法检出限为0.058 ng/mL;精密度(RSD,n=6)为0.8%～5.4%;回收率为94%～105%。方法经国家一级标准物质验证,测定结果与标准值相符。
The micro-amount of Ag in geochemical exploration samples is determined by graphite furnace atomic absorption spectrometry in 10 g/L of thiourea medium. The detection limit of the method for Ag is 0.058 ng/mL and the recovery of the method is 94% - 105 % with precision of 0.8% - 5.4% RSD （ n = 6）. The method has been verified by the determination of Ag in the National Standard Reference Materials and the results are in agreement with the certified values.
出处
《岩矿测试》
CAS
CSCD
2008年第3期237-238,共2页
Rock and Mineral Analysis
关键词
硫脲
石墨炉原子吸收光谱法
银
化探样品
thiourea
graphite furnace atomic absorption spectrometry
silver
geochemical exploration sample
