近百年来大辽河口潮间带中滴滴涕(DDTs)的沉积记录及其对人类活动的响应

CORC > 烟台海岸带研究所 > 中国科学院烟台海岸带研究所 > 中科院海岸带环境过程与生态修复重点实验室

	近百年来大辽河口潮间带中滴滴涕(DDTs)的沉积记录及其对人类活动的响应
	栾晓琳 1,2; 乔田峰 3; 吕敏 1; 廖春阳 4; 王东启 5; 刘东艳 1; 陈令新 1
刊名	环境化学
	2020
卷号	39 期号:1 页码:119-127
关键词	大辽河口潮间带沉积柱滴滴涕分布特征风险评价源趋分析影响因素
ISSN号	0254-6108
其他题名	Sediment records of DDTs in intertidal sediment core of Daliao River Estuary and their responses to anthropogenic activities in the past century
文献子类	Article
英文摘要	Dichlorodiphenyltrichloroethanes (DDTs) are still detected in various environmental matrices,although their usage in agriculture has been banned for about 30 years in China.Intertidal zone,as the intersection area of land and sea,is the final sink for contaminants.To comprehensively understand the deposition features of DDTs in intertidal sediment of Daliao River Estuary,a sediment core was sampled in this study.Combined with the dating data,the distribution,potential risk,source and fate of DDTs were investigated.The results showed that DDTs concentrations ranged from 0.313 ng·g~(-1) to 4.116 ng·g~(-1) (median:2.061 ng·g~(-1)),with p,p'-DDTs being the major components.Interestingly,the peak of DDTs concentrations (3.4364.116 ng·g~(-1)) during 1988 1996 corresponded well with the peak of pesticide production during 19711981,and a 15-year-round time lag was observed between these two peaks.Possible usage of technical DDT was implied after year 2000 for the control and prevention of disease in Liaoning Province.The risk assessment of DDTs revealed that concentrations of DDT and DDE in sediment core rarely (<25%) showed negative effect,while concentrations of DDD and total DDTs in the depth of 044 cm occasionally (25%50%) showed negative effect.The specific ratios of DDTs demonstrated that DDTs in the intertidal sediments were mainly from historical use of technical DDT rather than the use of dicofol.DDE and DDD were the main degradation products of DDT in the deeper layer (62110 cm) and shallower layer (061 cm),respectively.Further analysis revealed that the increased TOC content caused by human activities after year 1971 was the main reason that led the sediment environment changing from aerobic environment to anaerobic environment.What's more,DDTs concentrations in sediment core had strong positive correlations with sediment properties (TN,TP and TOC) (P <0.01),and also had a significant positive correlation with anthropogenic activities (such as GDP,urbanization and total agricultural output value) (P <0.01).Therefore,the results of the concentrations and compositions of DDTs in intertidal sediment core could reflect the direct and indirect influence of human activities on the occurrence and fate of contaminants in intertidal sediment.
语种	中文
CSCD记录号	CSCD:6673869
资助机构	科技部基础调查专项 ; 国家自然科学基金 ; 山东省自然科学基金 ; 中央组织部青年千人计划 ; 环境化学与生态毒理学国家重点实验室开放基金
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/30381]
专题	烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室烟台海岸带研究所_近岸生态与环境实验室烟台海岸带研究所_山东省海岸带环境工程技术研究中心
作者单位	1.中国科学院烟台海岸带研究所, 中国科学院海岸带环境过程与生态修复重点实验室; 2.中国科学院大学; 3.烟台大学环境与材料工程学院; 4.中国科学院生态环境研究中心, 环境化学与生态毒理学国家重点实验室; 5.华东师范大学地理科学学院
推荐引用方式 GB/T 7714	栾晓琳,乔田峰,吕敏,等. 近百年来大辽河口潮间带中滴滴涕(DDTs)的沉积记录及其对人类活动的响应[J]. 环境化学,2020,39(1):119-127.
APA	栾晓琳.,乔田峰.,吕敏.,廖春阳.,王东启.,...&陈令新.(2020).近百年来大辽河口潮间带中滴滴涕(DDTs)的沉积记录及其对人类活动的响应.环境化学,39(1),119-127.
MLA	栾晓琳,et al."近百年来大辽河口潮间带中滴滴涕(DDTs)的沉积记录及其对人类活动的响应".环境化学 39.1(2020):119-127.