引用本文:卢仁杰,张晓婕,吴福全,朱燕玲,黄佳慧,薛媛媛.金汞齐富集-便携式测汞仪直接测定环境空气中的气态汞[J].环境监控与预警,2019,11(6):32-35
LU Ren-jie,ZHANG Xiao-jie,WU Fu-quan,ZHU Yan-ling,HUANG Jia-hui,XUE Yuan-yuan.Direct Determination of Gaseous Mercury in Ambient Air by Gold mercury Amalgam Enrich and Portable Mercury Analyzer[J].Environmental Monitoring and Forewarning,2019,11(6):32-35
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金汞齐富集-便携式测汞仪直接测定环境空气中的气态汞
卢仁杰,张晓婕,吴福全,朱燕玲,黄佳慧,薛媛媛1,2
1.江苏省苏州环境监测中心,江苏 苏州 215000;2.苏州常卫环保科技有限公司,江苏 苏州 215000
摘要:
利用金汞齐富集-便携式测汞仪对环境空气中的气态汞进行直接测定,通过对实验条件的筛选及优化,得到最佳条件。经测试,汞的质量在0~9.20 ng之间,与对应的强度呈良好的线性关系,标准曲线的相关系数R2=0.997 1,RSD=87%和9.9%,方法检出限为1 ng/m3。该方法具有简便、快捷、不使用化学试剂等优点,且对环境温度和湿度有一定的抗干扰性,适用于对环境空气气态汞的现场测定。
关键词:  气态汞  金汞齐  便携式测汞仪  直接测定  抗干扰
DOI:
分类号:X831
文献标识码:B
基金项目:江苏省环境监测科研基金资助项目(1716)
Direct Determination of Gaseous Mercury in Ambient Air by Gold mercury Amalgam Enrich and Portable Mercury Analyzer
LU Ren-jie,ZHANG Xiao-jie,WU Fu-quan,ZHU Yan-ling,HUANG Jia-hui,XUE Yuan-yuan1,2
1. Jiangsu Suzhou Environmental Monitoring Center, Suzhou, Jiangsu 215000, China;2. Suzhou Changwei Environmental Protection Technology Co. Ltd., Suzhou, Jiangsu 215000, China
Abstract:
The gaseous mercury in ambient air was determined directly using gold mercury amalgam enrichment coupled with portable mercury analyzer, and optimum conditions were obtained by screening and optimizing test conditions. Good linearity was obtained when the mercury mass ranged from 0~9.20 ng. The square correlation coefficient of the calibration curve was R2=0.997 1, also, the method showed satisfied precision with the RSD=8.7% and 9.9%. The detection limit of the method is 1 ng/m3.This technique has the advantages of simple, quick, chemical reagents free and anti interference with the environmental temperature and humidity, so it is suitable for field determination of the gaseous mercury in ambient air.
Key words:  Gaseous mercury  Gold mercury amalgam  Portable mercury analyzer  Direct determination  Anti interference