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引用本文:   袁静, 罗立强. 同步辐射微区X射线荧光光谱法原位分析蚯蚓中K,Ca,Cu,Zn和Pb. 分析化学, 2016, 44(5): 792-798. doi:  10.11895/j.issn.0253-3820.150801 [复制]

Citation:   YUAN Jing , LUO Li-Qiang . Distribution Analysis of K, Ca, Cu, Zn and Pb in Earthworm by In Situ Synchrotron Radiation Micro X-Ray Fluorescence. Chinese Journal of Analytical Chemistry, 2016, 44(5): 792-798. doi: 10.11895/j.issn.0253-3820.150801 [复制]

同步辐射微区X射线荧光光谱法原位分析蚯蚓中K,Ca,Cu,Zn和Pb

收稿日期: 2015-10-12

基金项目: 本文系国家自然科学基金项目(Nos.20775018,41201527),国家高新技术研究发展计划863项目(No.2007AA06Z124)、中国地质调查局地质大调查项目(No.12120113015200)、国家科技专项"汶川地震断裂带科学钻探工程"0008课题和0003课题第四专题的联合资助

Distribution Analysis of K, Ca, Cu, Zn and Pb in Earthworm by In Situ Synchrotron Radiation Micro X-Ray Fluorescence

Received Date:  2015-10-12

Fund Project:  This work was supported by the National Natural Science Foundation of China (Nos. 20775018, 41201527) and the National High Technology Research and Development Program of China (No. 2007AA06Z124)

为了研究重金属元素在蚯蚓体内的富集和存储机制,使用同步辐射微区X射线荧光光谱法(μ-SRXRF)研究了K,Ca,Cu,Zn和Pb元素在生长于南京栖霞山铅锌矿区附近菜园土壤的蚯蚓体内的分布特征,发现Pb主要富集在蚯蚓后部消化道周围的区域,Zn,Cu在蚯蚓后部的分布规律与Pb类似,推测后部消化道周围区域的分布是蚯蚓为了阻断毒性重金属元素威胁而特有的富集和存储方式。5种元素的相关性表明,Pb和Zn相关性最高,存储方式最为相似,Pb与K和Ca在蚯蚓后部的分布呈显著正相关,说明毒性元素Pb在蚯蚓体内的富集和存储过程可能伴随着其它元素的吸收。本研究表明,μ-SRXRF在原位微区分析蚯蚓样品的元素空间分布方面具有很大优势,而进一步开展土壤及蚯蚓中Pb的形态研究,是研究重金属胁迫下蚯蚓解毒机制的重要前提。

关键词:   同步辐射微区X射线荧光光谱法, 蚯蚓, 原位分析, , 存储机制
Key words:   Synchrotron radiation micro X-ray fluorescence, Earthworm, In situ analysis, Lead, Storage mechanism
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同步辐射微区X射线荧光光谱法原位分析蚯蚓中K,Ca,Cu,Zn和Pb

袁静, 罗立强

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