TY - JOUR
T1 - Persistent organic pollutants in coastal sediment off South China in relation to the importance of anthropogenic inputs
AU - Liu, Liang Ying
AU - Wang, Ji Zhong
AU - Qiu, Jian Wen
AU - Liang, Yan
AU - Zeng, Eddy Y.
N1 - This work was financially supported by the Earmarked Fund of the State Key Laboratory of Organic Geochemistry (SKLOG2009A04), the National Natural Science Foundation of China (No. 41121063), and the
Natural Science Foundation of Guangdong Province (No. 9251064004000002).
PY - 2012/6
Y1 - 2012/6
N2 - Surface sediments collected from the coastal region off South China were analyzed for persistent organic pollutants (POPs), including polybrominated diphenyl ethers (PBDEs), polycyclic aromatic hydrocarbons (PAHs), and organochlorine pesticides (OCPs). The concentrations of BDE-209, Σ12PBDE, Σ15PAH, Σ7PAH, and Σ11OCP were 0.22 to 26.3, 0.01 to 0.77, 13.9 to 271, 6 to 133, and 0.9 to 104ng/g, respectively. The spatial distribution patterns of PBDEs and PAHs suggested that the eastern coastal region was slightly more contaminated than the western coast. In addition, the concentrations of dichlorodiphenyltrichloroethane (DDT) and its metabolites (DDXs) were highly variable, with the highest level found at a site in Zhanjiang Bay, which might have been reflective of the impact of antifouling paints mainly used in boat maintenance in harbor areas. The predominance of BDE-209 in the study region was consistent with the usage pattern of penta-, octa-, and deca-BDEs in China, whereas sediment PAHs appeared to have been derived largely from coal or wood and petroleum combustion. Preliminary assessments indicated that terrestrial inputs, such as atmospheric transport and riverine runoff, may have been the major input pathways for PBDEs and PAHs, respectively, to accumulate in coastal sediment off South China. Conversely, residues of DDT-containing antifouling paints associated with shipping activities and boat maintenance accounted for most of the accumulated sediment DDTs.
AB - Surface sediments collected from the coastal region off South China were analyzed for persistent organic pollutants (POPs), including polybrominated diphenyl ethers (PBDEs), polycyclic aromatic hydrocarbons (PAHs), and organochlorine pesticides (OCPs). The concentrations of BDE-209, Σ12PBDE, Σ15PAH, Σ7PAH, and Σ11OCP were 0.22 to 26.3, 0.01 to 0.77, 13.9 to 271, 6 to 133, and 0.9 to 104ng/g, respectively. The spatial distribution patterns of PBDEs and PAHs suggested that the eastern coastal region was slightly more contaminated than the western coast. In addition, the concentrations of dichlorodiphenyltrichloroethane (DDT) and its metabolites (DDXs) were highly variable, with the highest level found at a site in Zhanjiang Bay, which might have been reflective of the impact of antifouling paints mainly used in boat maintenance in harbor areas. The predominance of BDE-209 in the study region was consistent with the usage pattern of penta-, octa-, and deca-BDEs in China, whereas sediment PAHs appeared to have been derived largely from coal or wood and petroleum combustion. Preliminary assessments indicated that terrestrial inputs, such as atmospheric transport and riverine runoff, may have been the major input pathways for PBDEs and PAHs, respectively, to accumulate in coastal sediment off South China. Conversely, residues of DDT-containing antifouling paints associated with shipping activities and boat maintenance accounted for most of the accumulated sediment DDTs.
KW - Input mechanism
KW - Organochlorine pesticides
KW - Polybrominated diphenyl ethers
KW - Polycyclic aromatic hydrocarbons
KW - Sediment
KW - South China
UR - http://www.scopus.com/inward/record.url?scp=84861221753&partnerID=8YFLogxK
U2 - 10.1002/etc.1807
DO - 10.1002/etc.1807
M3 - Journal article
C2 - 22431240
AN - SCOPUS:84861221753
SN - 0730-7268
VL - 31
SP - 1194
EP - 1201
JO - Environmental Toxicology and Chemistry
JF - Environmental Toxicology and Chemistry
IS - 6
ER -