| 卧龙自然保护区土壤中有机氯农药的来源分析 |
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| 引用本文： | 刘文杰,谢文明,陈大舟,郑晓燕,刘咸德,朱晓华,杨永亮. 卧龙自然保护区土壤中有机氯农药的来源分析[J]. 环境科学研究, 2007, 20(6): 27-32 |
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| 作者姓名： | 刘文杰 谢文明 陈大舟 郑晓燕 刘咸德 朱晓华 杨永亮 |
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| 作者单位： | 中国环境科学研究院,北京,100012;吉林农业大学,资源与环境学院,吉林,长春,130118;吉林农业大学,资源与环境学院,吉林,长春,130118;国家标准物质研究中心,北京,100013;中国环境科学研究院,北京,100012;国家地质实验测试中心,北京,100037 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 为了判断清洁地区有机氯农药的来源，选择四川西部山区卧龙自然保护区高海拔点位的土壤样品，利用GC-HRMS方法测定有机氯农药的残留量. 卧龙土壤中w(HCHs)和w(DDTs)分别为(0.42±0.23)和(0.51±0.35) ng/g，比典型污染土壤低1～2个数量级. 利用聚类分析方法对浓度归一化数据进行分析，结果表明:卧龙土壤中HCHs的化学组成特征与典型污染土壤不同，而与典型大气样品相似；DDTs的组成特征在典型土壤和大气中没有稳定的显著差异. 结合有机氯农药的浓度水平、空间分布和物理化学性质进行分析，结果表明，大气传输过程的贡献可能是卧龙地区生态系统中HCHs以及其他有机氯农药的主要来源.
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| 关 键 词： | HCHs DDTs 大气 土壤 聚类分析 |
| 文章编号： | 1001-6929（2007）06-0027-06 |
| 收稿时间： | 2007-04-08 |
| 修稿时间： | 2007-06-05 |
The Source Analysis for Organochlorine Pesticides in Wolong Natural Reserve Soils |
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| LIU Wen-jie,XIE Wen-ming,CHEN Da-zhou,ZHENG Xiao-yan,LIU Xian-de,ZHU Xiao-hua and YANG Yong-liang. The Source Analysis for Organochlorine Pesticides in Wolong Natural Reserve Soils[J]. Research of Environmental Sciences, 2007, 20(6): 27-32 |
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| Authors: | LIU Wen-jie XIE Wen-ming CHEN Da-zhou ZHENG Xiao-yan LIU Xian-de ZHU Xiao-hua YANG Yong-liang |
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| Affiliation: | 1.Chinese Research Academy of Environmental Sciences, Beijing 100012, China;Department of Resources and Environment, Jilin Agriculture University, Changchun 130118, China2.Department of Resources and Environment, Jilin Agriculture University, Changchun 130118, China3.National Research Centre for Certified Reference Materials, Beijing 100013, China4.Chinese Research Academy of Environmental Sciences, Beijing 100012, China5.National Research Center of Geo-analysis, Beijing 100037, China |
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| Abstract: | In order to investigate the sources of OCPs in pristine area, soil samples were collected at high altitudinal sites in Wolong Natural Reserve in western mountain areas of Sichuan Province. Typical OCPs were measured by GC-HRMS. The concentrations of HCHs and DDTs were (0.42±0.23) ng/g and (0.51±0.35) ng/g, respectively, 1 to 2 orders of magnitude lower than typical polluted soils. The cluster analysis method was then used based on the normalized compositional data, toinvestigate the sources of OCPs in this area. It was revealed that the isomericcomposition of HCHs in the soil samples was similar to that in the typical air samples, rather than the typical polluted soils. However, there was no distinct difference in DDTs' compositions between the typical soils and the typical air samples. Considering the concentration level, the spatial distribution, and the physicochemical properties of the target HCHs isomers, it indicates that atmospheric transport may be the major source of HCHs and DDTs in the mountain soils of Wolong. |
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| Keywords: | HCHs DDTs air soil cluster analysis |
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