陈冉冉,马成骋,张晓天,李先和,万双.石墨消解-电感耦合等离子体质谱(ICP-MS)法测定铜精矿中汞的含量[J].中国无机分析化学,2019,9(2):20-23.
石墨消解-电感耦合等离子体质谱(ICP-MS)法测定铜精矿中汞的含量
Determination of mercury content in copper concentrate by ICP-MS with graphite digestion
投稿时间:2018-11-26  修订日期:2019-01-03
DOI:doi:10.3969/j.issn.2095-1035.2019.02.006
中文关键词:  铜精矿,汞,石墨消解,ICP-MS
英文关键词:copper  concentrate, mercury, graphite  digestion, ICP-MS
基金项目:
              
作者单位
陈冉冉 阳谷祥光铜业有限公司
马成骋 青岛市第五十八中学
张晓天 阳谷祥光铜业有限公司
李先和 阳谷祥光铜业有限公司
万双 阳谷祥光铜业有限公司
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中文摘要:
      称取0.2g样品于50mL样品管中,以5mL(1:1)硝酸-盐酸混合溶液为溶剂,采用石墨消解对样品进行前处理。以159Tb作内标元素补偿基体效应,ICP-MS对铜精矿中的202Hg进行检测。结果显示:在0~50μg/L的浓度范围内,校准曲线线性相关系数0.9999以上,方法检出限0.019μg/L。对铜精矿标准样品的检测结果与标准值相符。铜精矿中汞的浓度在0.5μg/g~15.8μg/g时,与直接测汞仪检测结果对比基本一致。
英文摘要:
      Weigh 0.2g sample in 50mL sample tube,add 5mL nitric acid - hydrochloric acid(volume ratio 1:1)mixing solution as solvent ,pretreatment of samples by graphite digestion. Using 159Tb as internal standard element to compensate the matrix effect, ICP-MS was used to detect 202Hg in copper concentrate. The results showed that the linear correlation coefficient of the calibration curve is more than 0.9999 in the concentration range of 0~50μg/L,the detection limit of method was 0.019μg/L. The test results of standard samples of copper concentrate are in conformity with the standard values. The concentration of mercury in copper concentrate is in the range of 0.5 μg/g~15.8 μg/g, which is basically the same as that of direct mercury analyzer.
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