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Determination of I-129 levels in Chinese biological and environmental specimens by accelerator mass spectrometry.
Li B(李柏); Zhang PQ(章佩群); Chen CY(陈春英); Chai ZF(柴之芳); Li, B; Zhang, PQ; Chen, CY; He, M; Chai, ZF
刊名CHINESE JOURNAL OF ANALYTICAL CHEMISTRY
2005
卷号33期号:7页码:904-908
关键词accelerator mass spectrometry epithermal neutron activation analysis radioactive tracing iodine-129 biological and environmental specimens
学科分类Chemistry
通讯作者Chinese Acad Sci, Inst High Energy Phys, Key Lab Nucl Analyt Tech, Beijing 100049, Peoples R China ; China Inst Atom Energy, Beijing 102413, Peoples R China
文章类型Article
英文摘要Preconcentration procedures including alkaline wet ashing, extraction-back extraction and precipitation have been established for the separation and purification of iodine-129 in the biological and environmental specimens. The ratios of I-129/I-127 in the specimens of pine needles and dry grass collected from Beijing area, and seaweed and seawater from Qingdao area of China have been determined by using the preconcentration procedures with accelerator mass spectrometry (AMS). The recovery in each step of the preconcentration procedures has been studied using I-131 [NaI] as a tracer for optimizing the sample preparation conditions. The concentrations of stable iodine (I-127) in the above samples were analyzed by epithermal neutron activation analysis. With the necessary correlation on the amount of added carrier and yields, the ratios of I-129/I-127 of 8.11 x 10(-9), 5.97 x 10(-9), 1.70 x 10(-10) and 6.05 x 10(-10), and the corresponding values of I-129 concentration of 3.22 x 10(-15), 1.24 x 10(-14), 1.27 x 10(-14) g/g dry weight and 2.30 x 10(-14) g/L were determined for the samples of pine needles, dry grass, seaweed and seawater, respectively. It was found that the I-129 levels in the two areas, which were not directly influenced by nuclear facilities, were similar to or even lower than those of the reported values for the same kind areas of the world. They are 2 similar to 3 orders of magnitude lower than those for the areas near the spent nuclear fuel reprocessing facilities in France and united kingdom. In addition, they are still 1 similar to 2 orders of magnitude higher than those of samples collected in the prenuclear age, showing the impact of anthropogenic nuclear activities. The results indicate that the I-129 level in these areas of China is within the global fallout background level.
类目[WOS]Chemistry, Analytical
研究领域[WOS]Chemistry
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语种英语
WOS记录号WOS:000230998500002
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被引频次:12[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.ihep.ac.cn/handle/311005/238711
专题院士_期刊论文
中国科学院高能物理研究所_实验物理中心
中国科学院高能物理研究所_多学科研究中心
作者单位中国科学院高能物理研究所
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GB/T 7714
Li B,Zhang PQ,Chen CY,et al. Determination of I-129 levels in Chinese biological and environmental specimens by accelerator mass spectrometry.[J]. CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,2005,33(7):904-908.
APA 李柏.,章佩群.,陈春英.,柴之芳.,Li, B.,...&Chai, ZF.(2005).Determination of I-129 levels in Chinese biological and environmental specimens by accelerator mass spectrometry..CHINESE JOURNAL OF ANALYTICAL CHEMISTRY,33(7),904-908.
MLA 李柏,et al."Determination of I-129 levels in Chinese biological and environmental specimens by accelerator mass spectrometry.".CHINESE JOURNAL OF ANALYTICAL CHEMISTRY 33.7(2005):904-908.
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