当前位置： SCI文献检索 > ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY期刊下所有文献 > Spatial variation of polycyclic aromatic hydrocarbons (PAHs) in surface sediments from rivers in hilly regions of Southern China in the wet and dry seasons.

Spatial variation of polycyclic aromatic hydrocarbons (PAHs) in surface sediments from rivers in hilly regions of Southern China in the wet and dry seasons.

Abstract：

:Seasonal variations of polycyclic aromatic hydrocarbons (PAHs) in the surface sediments from 13 rivers in hilly regions of southern China were studied. Concentrations of PAHs analyzed in the wet season were higher than those analyzed in the dry season, with residues ranging from 74.3 to 1930.9 ng g-1 dw in the wet season and from 96.9 to 1388.9 ng g-1 dw in the dry season. The primary contributors were 3- and 4-ringed congeners accounting for 59.8% ± 10.1% and 58.3% ± 9.3% of the identified PAHs in the wet and the dry seasons, respectively. Proximity to sources and locations susceptible to high atmospheric depositional inputs results in high concentrations of PAH. Diagnostic ratios have indicated that the sources of PAHs in different seasons make no apparent difference. Furthermore, a principal component analysis and multiple linear regression (PCA-MLR) studies indicate that combustion sources such as vehicle emissions and coal combustion are the primary sources of PAHs. Toxicological risk assessments based on TEQcare suggested that Benzo[a]pyrene, benz[a]anthracene, dibenz[a,h]anthracene could pose high ecological risks in this area.

journal_name

Ecotoxicol Environ Saf

journal_title

Ecotoxicology and environmental safety

authors

Gong X,Xiao L,Zhao Z,Li Q,Feng F,Zhang L,Deng Z

doi

10.1016/j.ecoenv.2018.03.004

subject

Has Abstract

pub_date

2018-07-30 00:00:00

pages

322-329

eissn

0147-6513

issn

1090-2414

pii

S0147-6513(18)30184-2

journal_volume

156

pub_type

杂志文章

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