广东新丰江水库XFJ-1孔DDTs和HCHs的沉积记录
Historical trends of DDTs and HCHs in sediment Core XFJ-1 from Xinfengjiang Reservoir,Guangdong Province
查看参考文献19篇
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文摘
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以210Pb对广东新丰江水库XFJ-1孔进行了定年,以GC-ECD测定新丰江水库沉积钻孔中DDTs和HCHs的含量,通过对比其剖面变化特征与该类农药在我国的生产、使用历史,探讨了水库中DDT、HCH的历史输入途径.过去30年来,XFJ-1孔平均沉积速率为1.42cm/a,沉积物中HCHs和DDTs的含量分别为1.26-3.90ng/g和1.00-3.96ng/g.DDTs、HCHs含量从20世纪80年代初逐渐下降,总体上与我国1983年开始禁止DDT、HCH的大规模生产和使用这一历史事件相符.DDTs、HCHs及其化合物比值的剖面变化特征均表明:流域内后期土壤侵蚀、搬运的再循环污染物质(即二次污染源)对水库DDT和HCH的贡献不明显;相反,农药历史使用(即一次污染源)是其主要来源,大气沉降是其主要输入途径.此外,γ-HCH、o,p'-DDT和p,p'-DDT含量的垂直变化表明,大规模禁用以后这些化合物仍有少量新的输入,需引起重视. |
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其他语种文摘
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Sediment Core XFJ-1 was collected from the Xinfengjiang Reservoir in Guangdong Province,and the samples after coreslicing were dated by the excess 210Pb.Each sediment layer was analyzed for HCH and DDT by equipment of the GC-ECD.The results show a time trend of HCH and DDT in the sediment core so that relationship between the source and transport pathway of these compounds can be discussed.Concentration of HCHs and DDTs in Core XFJ-1 ranges from 1.26 to 3.90ng/g and from 1.00 to 3.96ng/g,respectively.The concentration of HCHs and DDTs declined since the early 1980's,indicating that measures of HCH-and DDT-ban have been effective.Vertical distribution characteristics of HCHs and DDTs show these compounds were not come from the secondary source that was transported by runoff from the basin.The primary source was confirmed as the major source in sediment core,and was input by air dust deposition.Vertical profile of γ-HCH,o,p'-DDT and p,p'-DDT indicate that the compounds still have new input after the ban. |
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来源
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湖泊科学
,2010,22(2):215-220 【核心库】
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关键词
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沉积记录
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HCHs
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DDTs
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来源
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迁移途径
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新丰江水库
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地址
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中国科学院广州地球化学研究所, 广东, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1003-5427 |
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学科
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地球物理学 |
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基金
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中国科学院创新基地重要方向性项目
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国家自然科学基金创新研究群体项目
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文献收藏号
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CSCD:3840134
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参考文献 共
19
共1页
|
|
1.
Wei D. Environmental management of pesticidal POPs in China:Past,present and future.
Environment International,2007,33(7):894-902
|
被引
8
次
|
|
|
|
|
2.
Wang T. Contamination of persistent organic pollutants(POPs)and relevant management in China.
Environment International,2005,31(6):813-821
|
被引
2
次
|
|
|
|
|
3.
Li J. Organochlorine pesticides in the atmosphere of Guangzhou and Hong Kong:Regional sources and long-range atmospheric transport.
Atmospheric Environment,2007,41(18):3889-3903
|
被引
27
次
|
|
|
|
|
4.
Qin X. Organochlorine pesticides in the air around the Taihu Lake,China.
Environment Science & Technology,2004,3s(5):1368-1374
|
被引
1
次
|
|
|
|
|
5.
李芳柏. 新丰江水库富营养化现状及其综合防治对策.
土壤与环境,1999,8(1):26-30
|
被引
7
次
|
|
|
|
|
6.
林峥. 沉积物中多环芳烃和有机氯农药定量分析的质量保证和质量控制.
环境化学,1992,2:115-121
|
被引
1
次
|
|
|
|
|
7.
林瑞芬. 珠江口沉积柱样^210Pb法年龄测定结果及其环境地球化学意义.
地球化学,1998,27(5):401-411
|
被引
33
次
|
|
|
|
|
8.
乔敏. 太湖梅梁湾沉积物中有机氯农药的残留现状.
中国环境科学,2004,24(5):592-595
|
被引
35
次
|
|
|
|
|
9.
李红莉. 南四湖表层沉积物中有机氯农药的含量及分布特征.
中国环境监测,2005,21(6):11-14
|
被引
5
次
|
|
|
|
|
10.
张伟玲. 西藏错鄂湖和羊卓雍湖水体及沉积物中有机氯农药的初步研究.
地球化学,2003,32(4):363-367
|
被引
28
次
|
|
|
|
|
11.
张颖. 河北水库及湖泊沉积物中DDT农药的残留特征与风险评估.
环境科学学报,2006,26(4):626-631
|
被引
11
次
|
|
|
|
|
12.
Li J. Concentrations,enantiomeric compositions,and sources of HCH,DDT and chlordane in soils from the Pearl River Delta,South China.
Science of the Total Environment,2006,372(1):215-224
|
被引
56
次
|
|
|
|
|
13.
Lin T. Levels and mass burden of DDTs in sediments from fishing harbors:The importance of DDT-containing antifouling paint to the coastal environment of China.
Environmental Science and Technology,2009,43(21):8033-8038
|
被引
16
次
|
|
|
|
|
14.
Barra R. First report on chlorinated pesticide deposition in a sediment core from a small lake in central Chile.
Chernosphere,2001,45(6/7):749-757
|
被引
7
次
|
|
|
|
|
15.
Wang CS. Accumulation,inventory,and diagenesis of chlorinated hydrocarbons in Lake Ontario sediments.
Environmental Science and Technology,1995,29(10):2661-2672
|
被引
1
次
|
|
|
|
|
16.
van Metre PC. Trends in hydrophobic organic contaminants in urban and reference lake sediments across the United States,1970-2001.
Environmental Science and Technology,2005,39(15):5567-5574
|
被引
4
次
|
|
|
|
|
17.
Zhang G. Sedimentary records of DDT and HCH in the Pearl River Delta,South China.
Environmental Science and Technology,2002,36(17):3671-3677
|
被引
62
次
|
|
|
|
|
18.
Wang Z. Spatial and vertical distribution of organochlorine pesticides in sediments from Daya Bay,China.
Marine Pollution Bulletin,2008,s6(9):1578-1585
|
被引
4
次
|
|
|
|
|
19.
Ockenden WA. The global re-cycling of persistent organic pollutants is strongly retarded by soils.
Environmental Pollution,2003,121(1):75-80
|
被引
46
次
|
|
|
|
|
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