摘要
本文作者在已有仪器的基础上进行简单改装，建立了两次金汞齐—冷原子吸收光谱法测定大气中的微量气态总汞的方法。研究表明，这种方法最低检出限为０．０５ｎｇ；１００μｌ饱和汞蒸气连续测定结果表明其相对标准偏差＜１．４１％。在０～２．０ｎｇ汞量范围内标准工作曲线线性关系良好。运用该法，对贵州省万山汞矿、丹寨汞矿、清镇汞污染农田、省农科院和中国科学院地球化学研究所等地大气气态总汞进行了测定。这种分析方法还可以运用到其它环境样品微量汞的测定。
Based on the instruments we had,the authors set up a new procedure to determine trace total gaseous mercury in the atmosphere using two stage gold amalgamation cold vapor adsorption spectrometry method.It has been showed that the detection limit of this method is below 0 05ng Hg;the relative standard deviations for 100μl saturated mercury vapor gas samples is less than 1 41%.Linearity of calibration curves in the range of 0～2 0ng Hg is very good.This method was used to determine total gaseous mercury in the atmosphere at Guizhou Wanshan mercury mine,Danzhai mercury mine,Qinzheng mercury polluted field,Institute of agricultural sciences and Institute of Geochemistry.This method also can be used to analyze trace mercury contents in other environmental samples.
出处
《中国环境监测》
CAS
CSSCI
CSCD
北大核心
1997年第3期9-11,共3页
Environmental Monitoring in China
关键词
金汞齐
冷原子吸收法
汞
大气监测
gold amalgamation,cold vapor adsorption method,mercury,atmosphere.
