摘要
研究了石墨炉原子吸收法测定地质样品中微量Ag的方法,探索了以NH4IrCl6做基体改进剂的最佳仪器工作条件。在取样0.2000g,定容25mL的情况下,方法检出限为0.010μg/g,用国家标准物质验证,其准确度(RE%)小于10%,10次测定的精密度(RSD%)小于10%。
Micro - silver in geological samples are determined by using the method of graphite fire atomic absorption spectrum. It realized the best equipment conditions by using NH 4 IrCl 6 as the matrix modifier. Under the condition of sampling 0.2000g and constant volume of 25 mL, the method detection limit is 0.010ug/g. As tested by national standards, its accuracy （ RE% ） is less than 10%, and the precision （ RSD% ） in 10 times determination are less than 10%.
出处
《山东国土资源》
2008年第7期98-100,共3页
Shandong Land and Resources
