太湖胥口湾表层水和沉积物中多环芳烃的浓度水平及生态风险
The Contamination Levels of Polycyclic Aromatic Hydrocarbons in Surface Water and Sediments in Xukou Bay of Taihu Lake and the Associated Ecological Risk
查看参考文献37篇
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文摘
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多环芳烃(polycyclic aromatic hydrocarbons,PAHs)是环境中普遍存在的稠环类化合物,由于其对人体健康和生态环境产生较大危害,美国环保局将16种PAHs列为优先控制的污染物。PAHs也是太湖流域的主要污染物之一。作为华东地区的重要水系和水源地,研究太湖环境质量的变化对改善太湖流域水生生态系统和提高沿岸居民身体健康具有重要意义。论文研究了太湖胥口湾水域表层水和沉积物的PAHs。结果显示,表层水和沉积物的PAHs总浓度分别为7.2~ 83 ng·L~(-1)和66~ 620 ng·g~(-1)干重;年均值为29 ng·L~(-1)和218 ng·g~(-1)干重;年均毒性当量浓度为2.4 ng·L~(-1)和28 ng·g~(-1)干重。沉积物中的主要污染物为荧蒽、芘和,影响毒性当量浓度的主要是苯并(a)芘和二苯并(a, h)蒽。4环PAHs在沉积物中占主要,其浓度百分比为44%~ 48%,而5环PAHs则占毒性当量总浓度的90%以上,说明其危害主要来自5环PAHs。PAHs特征化合物比值分析表明,胥口湾沉积物中PAHs主要来源于煤和木材燃烧,表层水大部分为燃烧和石油的混合来源。污染水平的时空变化特点为丰水期(8月)表层水PAHs浓度偏高,沉积物偏低。湖区和湖岸的PAHs浓度只在丰水期有显著差异,表层水PAHs浓度湖区高于湖岸,沉积物相反;其他时期湖区和湖岸PAHs浓度无显著差异。根据加拿大沉积物环境质量标准,胥口湾整体生态风险水平较低。从时空分布特征来看,个别生态风险较高的点主要分布在湖岸,5月平水期可能是沉积物中PAHs生态风险较高的频发期。 |
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其他语种文摘
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Polycyclic aromatic hydrocarbons (PAHs), a class of condensed ring compounds, are widely detected in various environmental matrices. Because of their adverse effects on human health and ecological environment, 16 PAHs were listed as priority controlled pollutants by the United States Environmental Protection Agency. Studies showed that PAHs were the main contaminants in Taihu Lake. It is important to investigate the quality of water in Taihu Lake where is an important hydrographic net and urban drinking water supply in East China. The investigation is also very important to improve the aquatic ecosystem qualities and human health of the coastal residents. In the present study, the spatial and temporal variations of PAHs in surface water and sediments in Xukou Bay, Taihu Lake, were investigated. The results showed that the total concentrations of PAHs ranged from 7.2 to 83 ng·L~(-1) for surface water, and from 66 to 620 ng·g~(-1) dry weight for sediments. The average annual concentrations of PAHs in the two matrices were 29 ng·g~(-1)and 218 ng·g~(-1) dry weight, respectively. The mean benzo(a)pyrene toxicity equivalent concentrations (BaP_(eq)) were 2.4 ng·g~(-1) and 28 ng·g~(-1) dry weight in them, respectively. The main pollutants were fluoranthene, pyrene, and chrysene in sediments, while benzo(a)pyrene and dibenz(a,h)anthracene were the most abundant compounds when BaP_(eq) was considered. The concentrations of 4-ring PAHs accounted for 44% ~ 48% of the total PAHs in sediments, and 5-ring compounds contributed to more than 90% of the total BaP_(eq). The ratio analysis of the characteristic PAHs showed that PAHs in sediments in Xukou Bay are mainly from burning coal and wood, while PAHs in surface water mainly have fossil fuel and combustion sources. Relatively higher concentrations in surface water and lower concentrations in sediments were observed during the flood season (August). There was no significant difference of the PAH contamination between dry season and ordinary level season. According to the Canadian sediment environmental quality standards, the ecological risks of PAHs in Xukou Bay were low. The spatial and temporal ecological risks showed that the locations with higher ecological risks were mainly at the nearshore. Higher ecological risks of PAHs in sediments might be observed during the ordinary level season (in May), generally. |
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来源
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生态毒理学报
,2016,11(2):547-555 【核心库】
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DOI
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10.7524/AJE.1673-5897.20151206002
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关键词
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多环芳烃
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表层水
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沉积物
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生态风险
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时空变化
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太湖
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地址
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1.
上海大学环境与化学工程学院环境污染与健康研究所, 上海, 200444
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中国科学院广州地球化学研究所, 有机地球化学国家重点实验室, 广州, 510000
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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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1673-5897 |
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学科
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环境科学基础理论 |
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基金
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国家自然科学基金
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中科院重点实验室开放基金
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文献收藏号
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CSCD:5766980
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参考文献 共
37
共2页
|
|
1.
Rodrigo S. Presence of PAHs in water and sediments of the Colombian Cauca River during heavy rain episodes, and implications for risk assessment.
Science of the Total Environment,2016,540:455-465
|
CSCD被引
19
次
|
|
|
|
|
2.
Fernandez P. The historical of record of atmospheric pyrolytic pollution over Europe registered in the sedimentary PAH from remote mountain lake.
Environmental Science & Technology,2000,34(10):1906-1913
|
CSCD被引
17
次
|
|
|
|
|
3.
Yu W W. Source apportionment of PAHs in surface sediments using positive matrix factorization combined with GIS for the estuarine area of the Yangtze River, China.
Chemosphere,2015,134:263-271
|
CSCD被引
10
次
|
|
|
|
|
4.
Shi Z. Partitioning and source diagnostics of polycyclic aromatic hydrocarbons in rivers in Tianjin, China.
Environmental Pollution,2007,146(2):492-500
|
CSCD被引
27
次
|
|
|
|
|
5.
Men B. Distributions of polycyclic aromatic hydrocarbons in the Daliao River Estuary of Liaodong Bay, Bohai Sea (China).
Marine Pollution Bulletin,2009,58(6):818-826
|
CSCD被引
27
次
|
|
|
|
|
6.
Zhao X S. Spatial distribution and temporal trends of polycyclic aromatic hydrocarbons (PAHs) in water and sediment from Songhua River, China.
Environmental Geochemistry and Health,2014,36(1):131-143
|
CSCD被引
11
次
|
|
|
|
|
7.
Ana C R. Coexisting seabased and land-based sources of contamination by PAHs in the continental shelf sediments of Coatzacoalcos River discharge area (Gulf of Mexico).
Chemosphere,2016,144:591-598
|
CSCD被引
1
次
|
|
|
|
|
8.
程家丽. 我国环境介质中多环芳烃的分布及其生态风险.
环境工程学报,2007,1(4):138-144
|
CSCD被引
41
次
|
|
|
|
|
9.
Qiao M. Composition, sources, and potential toxicological significance of PAHs in the surface sediments of the Meiliang Bay, Taihu Lake, China.
Environment International,2006,32(1):28-33
|
CSCD被引
53
次
|
|
|
|
|
10.
Zhong W J. Screening level ecological risk assessment for phenols in surface water of the Taihu Lake.
Chemosphere,2010,80(9):998-1005
|
CSCD被引
25
次
|
|
|
|
|
11.
Lu G H. Active biomonitoring of complex pollution in Taihu Lake with Carassius auratus.
Chemosphere,2010,79(5):588-594
|
CSCD被引
3
次
|
|
|
|
|
12.
Guo G H. Characterizing ecological risk for polycyclic aromatic hydrocarbons in water from Lake Taihu, China.
Environmental Monitoring and Assessment,2012,184(11):6815-6825
|
CSCD被引
6
次
|
|
|
|
|
13.
Library and Archives Canada Cataloguing in Publication.
Environment Canada and Ministere du developpement durable, de I'Environment et des Parcs du Quebec. Criteria for the Assessment of Sediment Quality in Quebec and Application Frameworks: Prevention, Dredging and Remediation,2007:1-39
|
CSCD被引
1
次
|
|
|
|
|
14.
Liu Z Y. Distribution, source, and ecological risk assessment of polycyclic aromatic hydrocarbons (PAHs) in surface sediments from the Hun River, northeast China.
Environmental Monitoring and Assessment,2015,187(5):280-290
|
CSCD被引
1
次
|
|
|
|
|
15.
Wang Z. Probabilistic ecological risk assessment of typical PAHs in coastal water of Bohai Sea.
Polycyclic Aromatic Compounds,2013,33(4):367-379
|
CSCD被引
3
次
|
|
|
|
|
16.
Dominik D. PAH distribution and mass fluxes in the Three Gorges Reservoir after impoundment of the Three Gorges Dam.
Science of the Total Environment,2014,491:123-130
|
CSCD被引
7
次
|
|
|
|
|
17.
江敏. 舟山近海水体和沉积物中多环芳烃分布特征.
环境科学,2014,35(7):2673-2679
|
CSCD被引
1
次
|
|
|
|
|
18.
张明. 千岛湖表层沉积物中多环芳烃污染特征及生态风险评价.
中国环境科学,2014,34(1):253-258
|
CSCD被引
41
次
|
|
|
|
|
19.
Lu M. Distribution and characterization of organochlorine pesticides and polycyclic aromatic hydrocarbons in surface sediment from Poyang Lake, China.
Science of the Total Environment,2012,433:491-497
|
CSCD被引
19
次
|
|
|
|
|
20.
Roozbeh M. Source identification of polycyclic aromatic hydrocarbons (PAHs) in sediment samples from the northern part of the Persian Gulf, Iran.
Environmental Monitoring and Assessment,2014,186(11):7387-7398
|
CSCD被引
5
次
|
|
|
|
|
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