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@article{1336292,
author = {Lin, Tian and Guo, Zhigang and Li, Yuanyuan and Nizzetto, Luca and Ma, Chuanliang and Chen, Yingjun},
article_location = {WASHINGTON, DC (USA)},
article_number = {9},
doi = {http://dx.doi.org/10.1021/es505084j},
keywords = {EAST CHINA SEA; PERSISTENT ORGANIC POLLUTANTS; POLYCYCLIC AROMATIC-HYDROCARBONS; POLYCHLORINATED-BIPHENYLS PCBS; CHAIN CHLORINATED PARAFFINS; ADJACENT ARCTIC REGION; CHEMICAL PROPERTY DATA; NORTH PACIFIC-OCEAN; WATER GAS-EXCHANGE; ATLANTIC-OCEAN},
language = {eng},
issn = {0013-936X},
journal = {Environmental Science and Technology},
title = {Air-Seawater Exchange of Organochlorine Pesticides along the Sediment Plume of a Large Contaminated River},
url = {http://pubs.acs.org/doi/abs/10.1021/es505084j},
volume = {49},
year = {2015}
}
TY - JOUR
ID - 1336292
AU - Lin, Tian - Guo, Zhigang - Li, Yuanyuan - Nizzetto, Luca - Ma, Chuanliang - Chen, Yingjun
PY - 2015
TI - Air-Seawater Exchange of Organochlorine Pesticides along the Sediment Plume of a Large Contaminated River
JF - Environmental Science and Technology
VL - 49
IS - 9
SP - 5354-5362
EP - 5354-5362
PB - American Chemical Society
SN - 0013936X
KW - EAST CHINA SEA
KW - PERSISTENT ORGANIC POLLUTANTS
KW - POLYCYCLIC AROMATIC-HYDROCARBONS
KW - POLYCHLORINATED-BIPHENYLS PCBS
KW - CHAIN CHLORINATED PARAFFINS
KW - ADJACENT ARCTIC REGION
KW - CHEMICAL PROPERTY DATA
KW - NORTH PACIFIC-OCEAN
KW - WATER GAS-EXCHANGE
KW - ATLANTIC-OCEAN
UR - http://pubs.acs.org/doi/abs/10.1021/es505084j
L2 - http://pubs.acs.org/doi/abs/10.1021/es505084j
N2 - Gaseous exchange fluxes of organochlorine pesticides (OCPs) across the air-water interface of the coastal East China Sea were determined in order to assess whether the contaminated plume of the Yangtze River could be an important regional source of OCPs to the atmosphere. Hexachlorocyclohexanes (HCHs), chlordane compounds (CHLs), and dichlorodiphenyltrichloroethanes (DDTs) were the most frequently detected OCPs in air and water. Air-water exchange was mainly characterized by net volatilization for all measured OCPs. The net gaseous exchange flux ranged 10-240 ng/(m(2).day) for gamma-HCH, 60-370 ng/(m(2).day) for trans-CHL, 97-410 ng/(m(2).day) for cis-CHL, and similar to 0 (e.g., equilibrium) to 490 ng/(m(2).day) for p,p'-DDE. We found that the plume of the large contaminated river can serve as a significant regional secondary atmospheric source of legacy contaminants released in the catchment. In particular, the sediment plume represented the relevant source of DDT compounds (especially p,p'-DDE) sustaining net degassing when clean air masses from the open ocean reached the plume area. In contrast, a mass balance showed that, for HCHs, contaminated river discharge (water and sediment) plumes were capable of sustaining volatilization throughout the year. These results demonstrate the inconsistencies in the fate of HCHs and DDTs in this large estuarine system with declining primary sources.
ER -
LIN, Tian, Zhigang GUO, Yuanyuan LI, Luca NIZZETTO, Chuanliang MA and Yingjun CHEN. Air-Seawater Exchange of Organochlorine Pesticides along the Sediment Plume of a Large Contaminated River. \textit{Environmental Science and Technology}. WASHINGTON, DC (USA): American Chemical Society, 2015, vol.~49, No~9, p.~5354-5362. ISSN~0013-936X. Available from: https://dx.doi.org/10.1021/es505084j.
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