| 同位素稀释电感耦合等离子体质谱测定环境和生物样品中的镉 |
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| 引用本文： | 陈成祥,庄峙厦,刘海波,黄荣夫,谭芳,马煜宁,王小如.同位素稀释电感耦合等离子体质谱测定环境和生物样品中的镉[J].分析试验室,2006,25(9):44-48. |
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| 作者姓名： | 陈成祥 庄峙厦 刘海波 黄荣夫 谭芳 马煜宁 王小如 |
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| 作者单位： | 1. 厦门大学化学化工学院化学系,现代分析科学教育部重点实验室,厦门,361005
2. 厦门大学化学化工学院化学系,现代分析科学教育部重点实验室,厦门,361005;国家海洋局第一海洋研究所,青岛,266061 |
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| 基金项目： | 福建省科技攻关项目;国家自然科学基金 |
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| 摘 要： | 应用同位素稀释电感耦合等离子体质谱（ID—ICP—MS）对环境和生物样品茶叶、湖沉积物和人发标准物质中的镉进行测定研究。对电感耦合等离子体质谱（ICP—MS）的工作条件和参数进行了最优化。讨论了多原子离子和同量异位素对镉同位素比值的影响，通过天然镉标准溶液对质量歧视进行了校正，并优化同位素稀释剂的加入量。将该方法应用于茶叶、人发和沉积物标准物质的测定。
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| 关 键 词： | 同位素稀释 电感耦合等离子体质谱 镉 |
| 文章编号： | 1000-0720（2006）09-044-05 |
| 收稿时间： | 2005-12-07 |
| 修稿时间： | 2005-12-072006-03-22 |
Determination of cadmium in environmental and biological samples by ID-ICP-MS |
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| CHEN Cheng-xiang,ZHUANG Zhi-xia,LIU Hai-bo,HUANG Rong-fu,TAN Fang,MA Yu-ning,WANG Xiao-ru.Determination of cadmium in environmental and biological samples by ID-ICP-MS[J].Chinese Journal of Analysis Laboratory,2006,25(9):44-48. |
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| Authors: | CHEN Cheng-xiang ZHUANG Zhi-xia LIU Hai-bo HUANG Rong-fu TAN Fang MA Yu-ning WANG Xiao-ru |
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| Institution: | 1. Department of Chemistry, The Key Laboratory of Analytical Sciences of the Ministry of Educa- tion, Xiamen 361005; 2. First Institute Oceanography of SOA, Qingdao 266061 |
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| Abstract: | A method of isotope dilution inductively coupled plasma mass spectrometry was successfully applied to determine cadmium content in certificate reference materials of tea, lake sediment and human hair. Instrumental conditions and data acquisition parameters of ICP- MS were optimized. Isobaric and polyatomic interferences, detector dead-time and mass bias were discussed and natural cadmium was used to correct mass bias, the optimization of spike addition was also studied in this text. The results obtained were in good agreement with the certificated values. |
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| Keywords: | Isotope dilution ICP - MS Cadmium |
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