| 离子色谱-电感耦合等离子体质谱法测定植物性样品中的碘及其形态 |
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| 作者姓名： | Lin L Chen G Chen Y |
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| 作者单位： | 1. 国家食品质量安全监督检验中心, 北京 100094; 2. 安捷伦科技(中国)有限公司, 北京 100102 |
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| 基金项目： | 国家质量监督检验检疫总局科研课题项目 |
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| 摘 要： | 建立了离子色谱-电感耦合等离子体质谱联用(IC-ICP/MS)测定植物性样品中碘及其形态的方法。采用碱提取法处理样品后,应用IC-ICP/MS检测植物样品中的碘离子和碘酸根;采用高温裂解法处理样品,使样品中各种形态的碘最终均转化为碘离子,然后应用IC-ICP/MS检测碘离子,从而实现总碘的测定。碘的方法检出限为0.010 mg/kg。碱提取法和高温裂解法处理样品的碘的加标回收率分别为89.6%～97.5%和95.2%～111.2%,结果令人满意。按照所建立的方法分别考察了紫菜、海带、圆白菜、茶叶、菠菜等常见植物性样品中碘的存在形式,结果表明,紫菜中的碘以有机碘为主,而海带、圆白菜、茶叶、菠菜中的碘则以无机碘为主。
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| 关 键 词： | 离子色谱-电感耦合等离子体质谱 碘 碘形态 植物 |
| 收稿时间： | 2011-04-07 |
Determination of iodine and its species in plant samples using ion chromatography-inductively coupled plasma mass spectrometry |
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| Lin L,Chen G,Chen Y.Determination of iodine and its species in plant samples using ion chromatography-inductively coupled plasma mass spectrometry[J].Chinese Journal of Chromatography,2011,29(7):662-666. |
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| Authors: | Lin Li Chen Guang Chen Yuhong |
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| Institution: | 1. China Food Quality Safety Supervision and Inspection Center, Beijing 100094, China; 2. Agilent Technologies (China) Co., Ltd., Beijing 100102, China |
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| Abstract: | A method was established for the determination of iodine and its species in plant samples using ion chromatography-inductively coupled plasma mass spectrometry(IC-ICP/MS).Alkaline extraction and IC-ICP/MS were applied as the sample pre-treatment method and the detection technique respectively,for iodate and iodide determination.Moreover,high-temperature pyrolysis absorption was adopted as the pre-treatment method for total iodine analysis,which finally converted all the iodine species into iodide and measur... |
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| Keywords: | ion chromatography-inductively coupled plasma mass spectrometry(IC-ICP/MS) iodine iodine species plants |
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