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| 土壤样品中超痕量129I的无载体共沉淀分离及加速器质谱测定 | |
| 引用本文： | 罗茂益,周卫健,侯小琳,陈宁,张路远,刘起,贺朝会,范煜坤,梁旺国,王志文,付云翀.土壤样品中超痕量129I的无载体共沉淀分离及加速器质谱测定[J].分析化学,2011,39(2):193-197. |
| 作者姓名： | 罗茂益 周卫健 侯小琳 陈宁 张路远 刘起 贺朝会 范煜坤 梁旺国 王志文 付云翀 |
| 作者单位： | 1. 西安交通大学环境科学系,西安710049;西安加速器质谱中心,西安710052 2. 西安交通大学环境科学系,西安710049;中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,西安710075;西安加速器质谱中心,西安710052 3. 中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,西安710075;西安加速器质谱中心,西安710052 4. 西安交通大学环境科学系,西安,710049 5. 西安交通大学环境科学系,西安710049;中国科学院地球环境研究所黄土与第四纪地质国家重点实验室,西安710075 |
| 基金项目： | 中国科学院百人计划，知识创新项目 |
| 摘 要： | 环境样品中超微量129I的准确测定是天然129I地质定年和环境示踪应用的关键.本研究通过高温热解法分离土壤中的碘,并将其收集于碱性捕集液中,再利用AgI-AgCl共沉淀方法实现捕集液中碘的无载体分离:采用3 MV加速器质谱仪测量沉淀样品中129I/127I比值.通过优化分离和分析条件,高温热解过程中碘的分离效率达95%... |
| 关 键 词： | 碘-129 同位素示踪 共沉淀分离 土壤 加速器质谱 |
Determination of Low Level ~(129)I in Soil Samples Using Coprecipitation Separation of Carrier Free Iodine and Accelerator Mass Spectrometric Measurement |
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| LUO Mao-Yi,ZHOU Wei-Jian,HOU Xiao-Lin,CHEN Ning,ZHANG Lu-Yuan,LIU Qi,HE Chao-Hui,FAN Yu-Kun,LIANG Wang-Guo,WANG Zhi-Wen,FU Yun-Chong.Determination of Low Level ~(129)I in Soil Samples Using Coprecipitation Separation of Carrier Free Iodine and Accelerator Mass Spectrometric Measurement[J].Chinese Journal of Analytical Chemistry,2011,39(2):193-197. | |
| Authors: | LUO Mao-Yi ZHOU Wei-Jian HOU Xiao-Lin CHEN Ning ZHANG Lu-Yuan LIU Qi HE Chao-Hui FAN Yu-Kun LIANG Wang-Guo WANG Zhi-Wen FU Yun-Chong |
| Institution: | LUO Mao-Yi,ZHOU Wei-Jian,,HOU Xiao-Lin*,CHEN Ning,ZHANG Lu-Yuan,LIU Qi,HE Chao-Hui,FAN Yu-Kun,LIANG Wang-Guo,WANG Zhi-Wen,FU Yun-Chong |
| Abstract: | The accurate determination of ultra low level 129I in sample is critical and essential for the application of natural 129I in geological dating and environmental tracer studies.In this work,iodine was first separated from soil by combustion at high temperature;the released iodine was collected in an alkali trap solution.AgI-AgCl coprecipitaiton was used to separate carrier free iodine from the trap solution and to prepare target.129I in the target was then measured using a 3.0 MV accelerator mass spectromet... |
| Keywords: | Iodine isotopic Coprecipitation separation Soil Free iodine Accelerator mass spectro-metry |
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