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汞分析仪直接测定矿石中的痕量汞 被引量:10

Direct Determination of Trace Mercury in Ore Samples by Mercury Analyzer
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摘要 使用汞分析仪直接对不同矿石中的痕量汞进行快速准确测定。矿样直接称样后,无需复杂的湿法消解或样品前处理,6 min内即可完成汞的测定。建立的方法不受样品性质影响,无基体干扰,方法回收率为90.0%~109.0%,检出限为0.60 ng/g,相对标准偏差(RSD,n=8)为0.95%~4.74%。使用该法分析了6大类矿石标准参考物质和实际样品,并与常规方法进行比较,分析结果与证书值和其他方法测定值一致。与现行国家标准分析方法相比,该方法大大缩短了分析周期,适合大批量试样的分析。 Precise and rapid determination of total mercury in ore samples has been performed using a direct mercury analyzer without any wet chemical sample pretreatment.Once a weighed sample portion was introduced into the instrument,analysis can be completed in less than six minutes.The detection limit of the method was 0.60 ng/g for mercury and the recoveries of this method were 90.0%~109.0% with the precision of 0.95%~4.74% RSD(n=8).The analytical results of mercury for six kinds of ore reference materials were in good agreement with the certified values.The method also has been applied to the determination of trace mercury in ore samples and the results are in agreement with those by other conventional methods.In comparison with the current national standard method,the proposed method provides the advantages of less interference from matrix effect,more efficient,simple operation and suitable for routine inspection.
出处 《岩矿测试》 CAS CSCD 北大核心 2011年第1期67-70,共4页 Rock and Mineral Analysis
基金 科技支撑广西北部湾经济区发展专项资助(桂科专09320026) 广西自然科学基金资助(桂科自0991295)
关键词 痕量汞 矿石 汞分析仪 trace mercury ore mercury analyzer
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