2015
Air-Seawater Exchange of Organochlorine Pesticides along the Sediment Plume of a Large Contaminated River
LIN, Tian, Zhigang GUO, Yuanyuan LI, Luca NIZZETTO, Chuanliang MA et. al.Základní údaje
Originální název
Air-Seawater Exchange of Organochlorine Pesticides along the Sediment Plume of a Large Contaminated River
Autoři
LIN, Tian (156 Čína, garant), Zhigang GUO (156 Čína), Yuanyuan LI (156 Čína), Luca NIZZETTO (380 Itálie, domácí), Chuanliang MA (156 Čína) a Yingjun CHEN (156 Čína)
Vydání
Environmental Science and Technology, WASHINGTON, DC (USA), American Chemical Society, 2015, 0013-936X
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10511 Environmental sciences
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 5.393
Kód RIV
RIV/00216224:14310/15:00086685
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000354155800014
Klíčová slova anglicky
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
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 15. 3. 2016 12:00, Mgr. Michaela Hylsová, Ph.D.
Anotace
V originále
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.
Návaznosti
LM2011028, projekt VaV |
|