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[1]万晨洁,余益军,张 莉,等.太湖有机污染物的生态风险研究[J].南京大学学报(自然科学),2017,53(2):256.[doi:10.13232/j.cnki.jnju.2017.02.006]
 Wan Chenjie,Yu Yijun,Zhang Li,et al. Screening level ecological risk assessment of organic pollutants in Tai Lake[J].Journal of Nanjing University(Natural Sciences),2017,53(2):256.[doi:10.13232/j.cnki.jnju.2017.02.006]
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太湖有机污染物的生态风险研究()
     

《南京大学学报(自然科学)》[ISSN:0469-5097/CN:32-1169/N]

卷:
53
期数:
2017年第2期
页码:
256
栏目:
出版日期:
2017-04-01

文章信息/Info

Title:
 Screening level ecological risk assessment of organic pollutants in Tai Lake
作者:
 万晨洁余益军张 莉张晓辉刘红玲*于红霞
 南京大学环境学院,污染控制与资源化研究国家重点实验室,南京,210023
Author(s):
Wan ChenjieYu YijunZhang LiZhang XiaohuiLiu Hongling*Yu Hongxia
 tate Key Laboratory of Pollution Control & Resource Reuse,School of the Environment,Nanjing University,Nanjing,210023,China
关键词:
 有机污染物生态风险物种敏感性分布生物多样性减少太 湖
Keywords:
 organic pollutantsecological risksensitive species distribution(SSD)decrease in biodiversityTai Lake
分类号:
TP181
DOI:
10.13232/j.cnki.jnju.2017.02.006
文献标志码:
A
摘要:
 综合评估太湖水体中有机污染物短期和长期的生态风险,筛选出潜在风险大、需要重点关注的物质,并基于有机物的敏感生物统计,分析其对太湖生物多样性的影响.通过文献检索,汇总整理了21类232种太湖中有机污染物的浓度水平,其跨度在0.1~6000 ng·L-1之间,其中60%为弱极性有机物(lgKow>3).借助物种敏感性分布(SSD,Sensitive species distribution)计算潜在受影响的物种比例(PAF,Potential affected fraction)来表征其中104种有机物的急性生态风险和46种有机物的慢性生态风险,大部分有机物的急性风险小于5%,但慢性风险显著大于急性风险,其中有机农药对硫磷(12.96%)、异狄氏剂(14.00%)、六氯苯(6.85%)和甲基对硫磷(7.05%),多环芳烃苯并[a]芘(7.75%),雌激素类物质E1(14.83%)、E2(14.96%)和壬基酚(19.76%)慢性风险较大.分析这些有机污染物的影响生物敏感种属,底栖生物、浮游动物、鱼类和昆虫出现频次高,结合太湖近30年来生物多样性变化,初步推测太湖水体有机污染是导致生物多样性变降低的重要原因之一.
Abstract:
 To determine which pollutants deserve more attention from further research and regulatory actions,we present a comprehensive ecological risk assessment of organic pollutants in Tai Lake.The concentrations of 232 organic pollutants in 21 categories are yielded by literature research.The average concentrations of different categories range from 0.1 to 6000 ng·L-1.60% of them are low polar organics(lgKow>3)and 40% are polar organics(lgKow<3).Sensitive species distribution(SSD)analysis is applied to 104 and 46 organic pollutants to predict their acute and chronic risks respectively by calculating potential affected fractions(PAF)of all the organisms under predicted environmental concentrations.With acute PAF of most pollutants below the 5% threshold,acute ecological risks of organic pollutants are negligible.However,significant increases in chronic risks are seen for most pollutants,especially for Parathion­ethyl(12.96%),Endrin(14.00%),Hexachlorobenzene(6.85%),Methylparathion(7.05%),Benzo[a]pyrene(7.75%),Estrone(14.83%),17β­estradiol(14.96%)and Nonyphenol(19.76%).Most sensitive species of above organic pollutants mainly belong to benthos,zooplankton,insects and fish,which may explain the loss of species in benthos,zooplankton and fish during the past 30 years in Tai Lake.So we may get the conclusion that organic pollutions in Tai Lake were part of the reasons for the decrease in biodiversity,which calls for further measures to restore ecosystem health.

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备注/Memo

备注/Memo:
 基金项目:国家自然科学基金(21677073,213770533),水专项(2012ZX07506-001,2012ZX07501-003-02)
收稿日期:2016-10-15
*通讯联系人,E­mail:hlliu@nju.edu.cn
更新日期/Last Update: 2017-03-26