Distribution of aromatic amines,phenols,chlorobenzenes,and naphthalenes in the surface sediment of the Dianchi Lake,China  

作　　者：Xinyi Hu Ting Yang Chen Liu Jun Jin Bingli Gao Xuejun Wang Min Qi Baokai Wei Yuyu Zhan Tan Chen Hongtao Wang Yanting Liu Dongrui Bai Zhu Rao Nan Zhan 

机构地区：[1]College of Life and Environmental Sciences,Minzu University of China,Beijing 100081,China [2]School of Environment,Tsinghua University,Beijing 100084,China [3]College of Environmental&Resource Sciences,Zhejiang University,Hangzhou 310058,China [4]Key Laboratory of Eco-geochemistry,Ministry of Natural Resources of China,Beijing 100037,China

出　　处：《Frontiers of Environmental Science & Engineering》2020年第4期125-137,共13页环境科学与工程前沿（英文）

基　　金：Th e authors appreciate the financial support from the National Key R&D Program of China(2018YFC1903000);the Fundamental Research Funds for Central Universities(2019QNYL23);the Key Laboratory of Eco-geochemistry,Ministry of Natural Resources,China(CSJ2017012).

摘　　要：Organic pollutants are widespread environmental pollutants with high toxicity,persistence,and bioaccumulation.Our aim was to investigate the distribution of aromatic amines,phenols,chlorobenzenes,and naphthalenes in the surface sediment of the Dianchi Lake,China.Nineteen surface sediment samples were collected from the Dianchi Lake,and 40 types of organic pollutants were analyzed via gas chromatography-mass spectrometry.The total organic pollutant concentrations in the surface sediment of the Dianchi Lake varied from 27.4 to 1.62×10^3 ng/g.The concentrations of phenols were much higher than those in other water bodies but still within a controllable range,whereas the concentrations of the other organic pollutant classes were similar or even lower.The detection ratio of 3-or 4-methylphenol was the highest(100.00%)among the pollutants.The average total organic pollutant concentrations decreased in the following order:Caohai(540 ng/g)>the middle of Waihai(488 ng/g)>the edge of Waihai(351 ng/g)>Haigeng Dam(90.4 ng/g).Pearson analysis showed a strong correlation among 1-methylnaphthalene,2-methylnaphthalene,1,3-dinitronaphthalene,and 1,4-dinitronaphthalene(P<0.01).Caohai,the north lakeshore of Waihai and the south of Waihai showed higher risk because of high concentration;meanwhile,1,4-dichlorobenzene,3-or 4-methylphenol and 1,2,4-trichlorobenzene were mor e likely to cause risks.

关 键 词：Organic pollutants Lake sediment Spatial distribution Potential source 

分 类 号：X52[环境科学与工程—环境工程]