毛细管电泳-电感耦合等离子体质谱法测定地下水中不同形态的砷
目前砷形态分析主要采用液相色谱(HPLC)分离与电感耦合等离子体质谱(1CP—MS)、原子荧光光谱(AFS)、以及原子吸收光谱(AAS)等联用技术。与HPLC分离技术相比,毛细管电泳(CE)具有分离效率高、样品消耗少、分析速度快的优点,而ICP—MS具有元素特异性检测以及检出限极低的优势。因此,CE与ICP—MS联用成为进行包括砷在内的元素形态分析的强有力分析工具。本实验采用CE进行不同砷形态的分离,并与ICP-MS联用,实现了水样中砷形态的测定。...
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Published in | 分析化学 Vol. 41; no. 11; pp. 1780 - 1781 |
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Main Author | |
Format | Journal Article |
Language | Chinese |
Published |
中国地质科学院水文地质环境地质研究所,正定,050803%河北省环境地质勘察院,石家庄,050000
2013
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Subjects | |
Online Access | Get full text |
ISSN | 0253-3820 |
DOI | 10.3724/SP.J.1096.2013.30257 |
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Summary: | 目前砷形态分析主要采用液相色谱(HPLC)分离与电感耦合等离子体质谱(1CP—MS)、原子荧光光谱(AFS)、以及原子吸收光谱(AAS)等联用技术。与HPLC分离技术相比,毛细管电泳(CE)具有分离效率高、样品消耗少、分析速度快的优点,而ICP—MS具有元素特异性检测以及检出限极低的优势。因此,CE与ICP—MS联用成为进行包括砷在内的元素形态分析的强有力分析工具。本实验采用CE进行不同砷形态的分离,并与ICP-MS联用,实现了水样中砷形态的测定。 |
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Bibliography: | A method for the detection of trace As(~), As(V), monomethylarsonic acid( MMA), dimethylarsinic acid(DMA) in groundwater by capillary electrophoresis-inductively coupled plasma mass spectrometry(CE-ICP-MS) was developed. The results showed that the above four species of arsenic were baseline separated within 9 min under the optimized conditions. The detection limits (S/N = 3 ) of As(IB), As(V), DMA, MMA were O. 2-0.5μg/L, and the RSD ( n = 6) of the peak areas were smaller than 4.0%. The recoveries were 93%-106%. The result indicated that As(Ill) and As(V) as the main arsenic speciation existed in the groundwater of Inner Mongolia. HAN Mei1 , ZHAO Guo-XingI , LI Shu-ZhenI , SUN Zhen-HuaI , LI Yi2 , JIA Na * 1 1 ( The Institute of Hydrogeology and Environmental Geology,Zhengding 050803, China) 2 (Hebei Institute of Environmental Geological Exploration,Shijiazhuang 050000, China) 22-1125/O6 Capillary electrophoresis; Inductively coupled plasma mass spectrometry; Speciation analysis; Arsenic;Groundwater |
ISSN: | 0253-3820 |
DOI: | 10.3724/SP.J.1096.2013.30257 |