Occurrence, source apportionment and toxicity assessment of polycyclic aromatic hydrocarbons in surface sediments of Chaohu, one of the most polluted lakes in China

2011 ◽  
Vol 13 (12) ◽  
pp. 3336 ◽  
Author(s):  
Ji-Zhong Wang ◽  
Kai Zhang ◽  
Bo Liang ◽  
Eddy Y. Zeng
Keyword(s):  
Polycyclic Aromatic Hydrocarbons ◽  
Source Apportionment ◽  
Aromatic Hydrocarbons ◽  
Surface Sediments ◽  
Toxicity Assessment ◽  
Polycyclic Aromatic

scholarly journals Spatial Occurrence and Sources of Polycyclic Aromatic Hydrocarbons in Sediments Drive the Ecological Risk of Taihu Lake, China

2021 ◽  
Author(s):  
Xiulu Lang ◽  
Xinghua He ◽  
Yanhua Wang ◽  
Xi Chen ◽  
Mingli Zhang ◽  
...  
Keyword(s):  
Molecular Weight ◽  
Polycyclic Aromatic Hydrocarbons ◽  
Ecological Risk ◽  
Aromatic Hydrocarbons ◽  
Surface Sediments ◽  
Taihu Lake ◽  
Central Area ◽  
Toxicity Assessment ◽  
Ecological Risks ◽  
Polycyclic Aromatic

Abstract To study the spatial occurrence, sources, and ecological risks of 16 PAHs, surface sediments had been collected from seven major areas of Taihu Lake, China in April 2021. Results showed that the concentrations of ∑16PAHs varied between 1381.48~4682.16 ng g-1, and the contents of BghiP in each sample were the highest. The PAHs concentrations in the sediments near the lakeshore were much higher than those in the central area of the lake. The sedimentary ∑16PAHs were mainly composed of molecular-weight monomers and 4-ring PAHs showed superiority (35.69%~45.02%). According to the ratio of PAH monomer, the sedimentary PAHs in Taihu Lake were dominantly derived from the combustion. Through the biological toxicity assessment and the BaP equivalent (BaPE), great biological risks of PAHs monomers i.e. DahA and IcdP were found. Both concentrations of ∑16PAHs and dominant 4~6-ring monomers accompanied by carcinogenic risks in many areas of Taihu Lake increased. It is necessary to strengthen monitoring and take measures to control the input of organic pollutants.

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