摘要
建立了二氯甲烷萃取,半胱氨酸-乙酸铵溶液反萃取,液相色谱-电感耦合等离子体质谱法测定水中甲基汞的方法.取样量为1 L时,方法检出限为0.1 ng/L,相对标准偏差为6.6％-13％,地表水、生活污水和工业废水3种实际水样的加标回收率分别为45.6％- 70.5％、37.0％ - 65.6％、18.4％ - 61.8％.与5种甲基汞测定方法的前处理过程、分析仪器和检出限进行了比较,并讨论了无机汞的干扰情况及如何降低体系空白和消除无机汞干扰的质量控制手段.
The determination of methyl mercury by liquid chromatography-inductively coupled plasma mass spectrometry withliquid-liquid extraction was researched in this paper. The method limit of detection was 0. 1 ng/L with 1 L sampling volume, andthe relative standard deviation was ranged from 6. 6% -13%. The recoveries for surface water, domestic waste water and industrialwaste water were 45.6%-70. 5% , 37.0%-65.6% and 18.4%-61.8% , respectively. The advantage of the method wascompared with other five methods, and the quality control measures were investigated＇ to enhance the sensitivity.
出处
《中国环境监测》
CAS
CSCD
北大核心
2015年第1期109-112,共4页
Environmental Monitoring in China
关键词
甲基汞
液液萃取
液相色谱
电感耦合等离子体质谱
methyl mercury
liquid-liquid extraction
liquid chromatography
inductively coupled plasma mass spectrometry
