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投稿时间:2020-11-06 修订日期:2020-11-12
投稿时间:2020-11-06 修订日期:2020-11-12
中文摘要: 建立了固体进样-直接测汞仪法测定银精矿中汞的分析方法。试样无需进行样品前处理,将银精矿试样直接称量于样品舟中,在氧气气氛中,试样在分解炉中经历干燥和高温热分解,汞被还原成汞原子,再被氧气流带进汞齐化管中进行汞齐化反应,其中的汞被选择性吸附,于900℃加热释放出汞蒸汽,,汞蒸气被氧气流带入单波长光学吸收池进行原子吸收测量,方法检出限为0.007μg/g,测定结果的相对标准偏差为1.77%~3.07%(n=11),加标回收率为98.08%~102.43%。方法操作简单、快速稳定、重现性良好,适合于银精矿中微量汞的测定。
中文关键词: 固体进样—直接测汞仪 汞 银精矿
Abstract:An analytical method for the determination of mercury in silver concentrate by solid sampling-direct mercury-measuring instrument was established.Sample without sample preparation, the sample of silver concentrate directly weigh in sample boat, oxygen in the atmosphere, the sample in the decomposition furnace drying and high temperature pyrolysis, reduction of mercury mercury atoms, and then flow into amalgamation by the oxygen tube in the response, the amalgamation of mercury by selective adsorption, 900 ℃ heat release mercury vapor, and mercury vapor flow into single wavelength optical absorption by the oxygen pool atomic absorption measurement,Methods The detection limit was 0.007 g/g, the relative standard deviation was 1.77%~3.07%(n=11), and the standard recovery was 98.08% ~ 102.43%.The method is simple, fast, stable and reproducible. It is suitable for the determination of trace mercury in silver concentrate.
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基金项目:
作者 | 单位 | |
叶玲玲* | 中国检验认证集团广西有限公司 | 373242710@qq.com |
江荆 | 中国检验认证集团广西有限公司 | |
吴雪英 | 中国检验认证集团广西有限公司 | |
魏雅娟 | 中国检验认证集团广西有限公司 | |
吴魏成 | 中国检验认证集团广西有限公司 |
引用文本:
叶玲玲,江荆,吴雪英,魏雅娟,吴魏成.固体进样-直接测汞仪法测定银精矿汞量[J].中国无机分析化学,2021,11(3):84-88.
YE Lingling,JIANG Jing,WU Xueying,WEI Yajuan,WU Weicheng.Determination of mercury content in silver concentrate by solid sampling-direct mercury-measuring instrument method[J].Chinese Journal of Inorganic Analytical Chemistry,2021,11(3):84-88.
叶玲玲,江荆,吴雪英,魏雅娟,吴魏成.固体进样-直接测汞仪法测定银精矿汞量[J].中国无机分析化学,2021,11(3):84-88.
YE Lingling,JIANG Jing,WU Xueying,WEI Yajuan,WU Weicheng.Determination of mercury content in silver concentrate by solid sampling-direct mercury-measuring instrument method[J].Chinese Journal of Inorganic Analytical Chemistry,2021,11(3):84-88.