帮助 关于我们

返回检索结果

红枫湖钻孔沉积物中滴滴涕的沉积记录
Sediment Record of DDTs in Sediment Core from Hongfeng Reservoir

查看参考文献23篇

郭建阳 1   吴丰昌 2 *   廖海清 2   邓秋静 1   黎文 1   张润宇 1   赵晓丽 2  
文摘 采用GC/MS方法分析了红枫湖钻孔沉积物中滴滴涕的垂直分布状况, 并对其来源和生态风险进行了分析和评估.红枫湖钻孔沉积物中滴滴涕的含量介于7.6~23.7ng/g之间, 且从底层至表层基本上呈下降的趋势.其中, 1981~1983年间有一个急剧下降的过程, 随后基本上呈缓慢下降的趋势.沉积物中滴滴涕的组成以p, p′-DDTs(p, p′-DDT、p, p′-DDE和p, p′-DDD的总和)为主, p, p′-DDTs与o, p′-DDTs(o, p′-DDT、o, p′-DDE和o, p′-DDD总和)的比值在5.1~8.4之间, 说明沉积物中的滴滴涕主要来源于农药滴滴涕的残留.又因为沉积物中残留的滴滴涕是以它的代谢产物为主, DDT/(DDD+DDE)的比值为0.31~ 0.84, 所以沉积物中的滴滴涕主要源于历史的残留.此外, DDT/(DDD+DDE)和DDE/DDD比值的垂直变化特征显示, 尽管我国1983年就禁止了滴滴涕在农业上的使用, 但直至1990年前后, 红枫湖流域内仍存在滴滴涕使用的可能.风险评价的结果显示, 红枫湖表层沉积物中DDE、DDD、DDT和DDTs的含量均介于ERL和ERM值之间, 可能造成潜在的生态风险, 因此红枫湖沉积物中滴滴涕的污染仍值得密切关注
其他语种文摘 In order to reconstruct the chronology of 2, 2-his(4-Chlorophenyl)-1, 1, 1-trichloroethane(DDT)input into the Hongfeng reservoir and assess the pollution issues, the temporal distribution of DDT in sediment core from Hongfeng reservoir was measured using GC/MS method, and the possible sources and potential risk assessment also had been identified. The DDTs(sum of p, p′-and o, p′-DDT, DDE and DDD)in sediment core were ranged from 7.6 to 23.7ng/g, and roughly, ever decreased from the bottom to the surface sediment.In detail, a sharp decline of DDTs concentration in sediment was found from 1981 to 1983, followed by a tardy decrease trend to the present. The DDTs in sediment were mainly composed of p, p′-DDTs(sum of p, p′-DDT, DDE and DDD).The ratio of p, p′-DDTs to o, p′-DDTs(sum of o, p′-DDT, DDE and DDD)ranged from 5.1 to 8.4, which suggests that the DDTs in sediment were chiefly originated from the technical DDT.Meanwhile, the DDTs in sediments were dominated by the metabolites of DDT(DDD and DDE)and the ratio of DDT/(DDD+DDE)were between 0.31and 0.84, indicating the DDTs in sediment were mostly stemmed from the historical usage. Besides, the vertical profile of the ratios of DDT/(DDD+DDE)and DDE/DDD indicate that possible usage of technical DDT still occurred in the drainage area of Hongfeng reservoir around 1990, although the usage of technical DDT in agriculture has been banned in 1983.The residue levels of DDE, DDD, DDT, and DDTs in surface sediment from Hongfeng reservoir were all between ERL and ERM, suggesting potential risk could occur, and the contamination of DDT in Hongfeng reservoir deserving more concerns
来源 环境科学 ,2010,31(6):1589-1593 【核心库】
关键词 红枫湖 ; 沉积柱 ; 滴滴涕 ; 来源 ; 风险评价
地址

1. 中国科学院地球化学研究所, 环境地球化学国家重点实验室, 贵阳, 550002  

2. 中国环境科学研究院湖泊生态环境研究中心, 国家环境保护湖泊污染国家重点实验室, 北京, 100012

语种 中文
文献类型 研究性论文
ISSN 0250-3301
学科 环境污染及其防治
基金 国家973计划 ;  贵州省自然科学基金
文献收藏号 CSCD:3933965

参考文献 共 23 共2页

1.  华小梅. 我国农药的生产、使用状况及其污染环境因子分析. 环境科学进展,1996,4(2):33-45 被引 130 次    
2.  袁旭音. 太湖沉积物中有机氯农药的残留特征及风险评估. 环境科学,2003,24(1):121-125 被引 83 次    
3.  龚香宜. 湖北省洪湖沉积物中有机氯农药的垂直分布特征. 环境化学,2006,25(4):513-514 被引 9 次    
4.  刘军. 海河干流、大沽排污河沉积物中有机氯农药的残留状况. 环境污染与防治,2006,28(3):169-173 被引 13 次    
5.  罗孝俊. 珠江三角洲河流及南海近海区域表层沉积物中有机氯农药含量及分布. 环境科学学报,2005,25(9):1272-1279 被引 27 次    
6.  Tan L. Distribution and sources of organochlorine pesticides in water and sediments from Daliao River estuary of Liaodong Bay, Bohai Sea(China). Estua Coastal Shelf Sci,2009,84(1):119-127 被引 18 次    
7.  Zhang Z L. Fate and assessment of persistent organic pollutants in water and sediment from Minjiang River Estuary, Southeast China. Chemosphere,2003,52(9):1423-1430 被引 76 次    
8.  张祖麟. 闽江口水、间隙水和沉积物中有机氯农药的含量. 环境科学,2003,24(1):117-120 被引 24 次    
9.  Liu M. Organochlorine pesticides in surface sediments and suspended particulate matters from the Yangtze estuary, China. Environ Pollut,2008,156(1):168-173 被引 18 次    
10.  陈伟琪. 珠江口表层沉积物和悬浮颗粒物中的持久性有机氯污染物. 厦门大学学报,2004,43(增刊):230-235 被引 10 次    
11.  Wang Z. Spatial and vertical distribution of organochlorine pesticides in sediments from Daya Bay, South China. Mar Pollut Bull,2008,56(9):1578-1585 被引 4 次    
12.  Yuan D. Status of persistent organic pollutants in the sediment from several estuaries in China. Environ Pollut,2001,114(1):101-111 被引 13 次    
13.  Chau K W. Persistent organic pollution characterization of sediments in Pearl River Estuary. Chemosphere,2006,64(9):1545-1549 被引 10 次    
14.  Yang R Q. The levels and distribution of organochlorine pesticides(OCPs)in sediments from the Haihe River, China. Chemosphere,2005,61(3):347-354 被引 33 次    
15.  Wan G J. Coupling between 210Pbex and organic matter in sediments of a nutrient-enriched lake:An example from Lake Chenghai, China. Chem Geol,2005,224(2):223-236 被引 13 次    
16.  Yang X. Dicofol application resulted in high DDTs residue in cotton fields from northern Jiangsu province, China. J Hazard Mater,2008,150(1):92-98 被引 7 次    
17.  Qiu X. Contribution of dicofol to the current DDT pollution in China. Environ Sci Technol,2005,39(12):4385-4390 被引 32 次    
18.  安太成. 珠三角地区POPs农药的污染现状及控制对策. 生态环境,2005,14(6):981-986 被引 27 次    
19.  Yang R Q. HCH and DDT residues in mollusks from Chinese Bohai coastal sites. Mar Pollut Bull,2004,48(7/8):795-805 被引 13 次    
20.  Doong R A. Distribution and fate of organochlorine pesticide residues in sediments from the selected rivers in Taiwan. Chemosphere,2002,48(2):237-246 被引 17 次    
引证文献 5 篇

1 罗冬莲 福建省漳江口表层沉积物中滴滴涕的残留特征 海洋通报,2012,31(1):74-79
被引 2 次

2 罗冬莲 福建漳江口水环境中滴滴涕(DDTs)的分布与溯源 应用生态学报,2014,25(12):3664-3672
被引 1 次

显示所有5篇文献

论文科学数据集
PlumX Metrics
相关文献

 作者相关
 关键词相关
 参考文献相关

版权所有 ©2008 中国科学院文献情报中心 制作维护：中国科学院文献情报中心
地址：北京中关村北四环西路33号 邮政编码：100190 联系电话：(010)82627496 E-mail:cscd@mail.las.ac.cn 京ICP备05002861号-4 | 京公网安备11010802043238号