Distribution and sources of polycyclic aromatic hydrocarbons in surface sediments of rivers and an estuary in Shanghai, China.
Concentrations, spatial distribution and sources of 17 polycyclic aromatic hydrocarbons (PAHs) and methylnaphthalene were investigated in surface sediments of rivers and an estuary in Shanghai, China. Total PAH concentrations, excluding perylene, ranged from 107 to 1707 ng/g-dw. Sedimentary PAH concentrations of the Huangpu River were higher than those of the Yangtze Estuary. The concentration of the Suzhou River was close to the average concentration of the Huangpu River. PAHs source analysis suggested that, in the Yangtze Estuary, PAHs at locations far away from cities were mainly from petrogenic sources. At other locations, both petrogenic and pyrogenic inputs were significant. In the Huangpu and Suzhou Rivers, pyrogenic input outweighed other sources. The pyrogenic PAHs in the upper reaches of the Huangpu River were mainly from the incomplete combustion of grass, wood and coal, and those in the middle and lower reaches were from vehicle and vessel exhaust.
State Key Laboratory of Pollution Control and Resources Reuse, School of Environmental Science and Engineering, Tongji University, Shanghai 200092, China.
Ying
Y
Liu
Ling
L
Chen
Zhao
Z
Jianfu
Huang
H
Qinghui
Zhu
Z
Zhiliang
Gao
G
Hongwen
D000327:Adsorption; D002244:Carbon / Q000032:analysis; D002681:China; D002851:Chromatography, High Pressure Liquid / Q000379:methods; D002947:Cities; D004784:Environmental Monitoring / Q000379:methods; D005390:Fires; D019015:Geologic Sediments / Q000737:chemistry*; D011084:Polycyclic Aromatic Hydrocarbons / Q000032:analysis*; D045483:Rivers; D012989:Soil Pollutants / Q000032:analysis*; D001335:Vehicle Emissions
D011084:Polycyclic Aromatic Hydrocarbons; D012989:Soil Pollutants; D001335:Vehicle Emissions; D002244:Carbon