离子色谱-六极碰撞等离子质谱法同时测定水样的砷形态
DETERMINATION OF ARSENIC SPECIATIONS IN AQUEOUS SAMPLES BY IC-ICP-MS
查看参考文献14篇
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文摘
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经阴离子色谱柱分离,3 mmol/L KH2PO4-K2HPO4(含3%CH3OH改进剂)的淋洗液等梯度淋洗,用六极碰撞等离子体质谱仪在线测定了三种砷形态.检出限分别为:As(Ⅴ) 0.49 μg/L,As(Ⅲ) 0.39 μg/L,DMA 0.16 μg/L.重复性优于6.0%,三日复现性优于6.1%.为了检验该方法的实际应用性,测定了贵阳市饮用水源阿哈湖的湖水及入湖河水中的砷形态,结果比较理想. |
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其他语种文摘
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Three arsenic speciations (As(V) , As(Ⅲ) and DMA) were separated on an anion exchange column and then on-line determined by a hexapole collision inductively coupled plasma mass spectrometer. The eluent was composed of 0.003 mmol/LKH_2PO_4-K_2HPO_4(with 3%CH_3OH modifier). Using an isocratic elution, three arsenic speciations were separated in 9 min. The detection limits were 0.49 μg/L for As(V) , 0.39 μg/L for As(Ⅲ) and 0.16 jug/L for DMA, respectively. Repeatability was below 6%, and three-day reproducibility was below 6.1% for the three arsenic speciations. This method was applied to the analysis of stream water and lake water that are used as drinking water supply in Guiyang city, China. |
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来源
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矿物学报
,2004,24(4):325-328 【核心库】
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关键词
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砷形态
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色谱
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等离子体质谱
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地址
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中国科学院,地球化学研究所, 贵州, 贵阳, 550002
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-4734 |
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学科
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地质学 |
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基金
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国家自然科学基金项目
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中国科学院知识创新工程重要方向项目
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文献收藏号
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CSCD:1797287
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