流动注射在线萃取-火焰原子吸收光谱法测定地质试样中痕量银
Determination of Trace Silver in Geological Samples by Flow Injection On-line Extraction-Flame Atomic Absorption Spectrometry
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摘要: 研究了在线萃取系统流程中最佳参数,提出一个流动注射在线萃取-火焰原子吸收光谱法测定地质试样中痕量Ag的分析方法。检出限为0.54ng/ml,对于含Ag 20ng/ml试样测定10次,精密度(RSD)为1.64％,分析速度可达20～30N/h,经地质标样分析验证结果可靠。Abstract: The optimum parameters of the flow injection on-line extraction system were investigated. The detection limit and relative standard deviation of the method were 0. 54 ng/ml and 1. 64%(20ng/ml Ag,n= 10)respectively. 20~30 samples aliquots can be analyzed i
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