Distribution,sources and ecological risk assessment of polycyclic aromatic hydrocarbons(PAHs)in surface sediments of Shenzhen bay
WANG Jian
HE Jinxian
LIN Hai
GAN Huayang
SHI Shuai
LI Yang
CAO Wenjie
Abstract：The GC-MS analysis method was used to analyze the 16 multi-ring aromatic hydrocarbons in the surface deposition samples of Shenzhen bay in June 2020.The results showed that the 16 kinds of polycyclic aromatic hydrocarbon concentrations in the surface deposit in Shenzhen bay were 410 to 2486 ng·g-1,the average concentration was 977.67 ng·g-1,the overall was in moderate contamination level,and the polycyclic aromatic hydrocarbon in the sample high ring(4～6 ring)was mainly 5 ring(38.44％)＞3 ring(21.96％)＞6 ring(12.33％)＞2 ring(8.28％).Through the multi-cyclic aro-matic hydrocarbon lightric ratio,the combustion of petroleum,coal and wood on the contribution rate of polycyclic aromats in Shenzhen bay's surface sediments was about 88％,which was the main source.Based on the reference method(SQGS),the analysis of the polycyclic aromatic hydrocarbons in the surface sediments of Shenzhen bay showed that the diphenyl(A,H)had great ecological risks.The naphthalene and fluorene had potentially ecological risks.Measures for pollution control must be used.
Keywords：Shenzhen baysurface sedimentPAHsdistribution characteristicssource analysiseco-logical risk
Publication Date：2024-10-28
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：7( 80-86 )