摘要
样品经四酸分解，1％的硝酸提取，2％硫脲定溶。石墨炉原子吸收测定样品中的银，方法检出限0．014ug/g，精密度（RSD，n=6）4％～16％；回收率为96％～104％。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 samples is determined by Graphite furnace atomic absorption spectrometrym, The detection limit of the method for by Ag is 0. 0051ng/ml, the RSD（n =6） is 4%～ 16%. The recovery of the method is 96%～ 104%. The method has verified by the determination of Ag in the National Standard Reference Materials and the results are in agreement with the certified values.
出处
《贵州地质》
2009年第1期73-74,共2页
Guizhou Geology
关键词
银
硫脲
石墨炉-原子吸收光谱
土壤
水系沉积物
silver
thiourea
Graphite furnace atomic absorption spectrometry
Soil
Stream Sediment.
