Spatiotemporal distributions of halocarbons in the marine boundary air and surface seawater of the Changjiang estuary and its adjacent East China Sea

被引：15
|
作者：
Yuan, Da [1 ,3 ]
He, Zhen [1 ,4 ]
Yang, Gui-Peng [1 ,2 ,4 ]
机构：
[1] Ocean Univ China, Inst Adv Ocean Study, Minist Educ, Key Lab Marine Chem Theory & Technol, Qingdao 266100, Peoples R China
[2] Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Peoples R China
[3] Qilu Univ Technol Shandong Acad Sci, Natl Engn & Technol Res Ctr Marine Monitoring Equ, Shandong Prov Key Lab Ocean Environm Monitoring T, Inst Oceanog Instrumentat, 7 Miaoling Rd, Qingdao 266061, Peoples R China
[4] Ocean Univ China, Inst Marine Chem, Qingdao 266100, Peoples R China
来源：
MARINE POLLUTION BULLETIN | 2019年 / 140卷
基金：
中国国家自然科学基金;
关键词：
Chlorofluorocarbons; Methyl halides; Distribution; Marine atmosphere; Sea-air flux; Changjiang estuary; METHYL-BROMIDE; VERTICAL DISTRIBUTIONS; PURE WATER; HYDROCARBONS; CHLORIDE; IODIDE; OCEAN; ATMOSPHERE; CFC-11; CHLOROFLUOROCARBONS;
D O I：
10.1016/j.marpolbul.2019.01.040
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Spatiotemporal distributions of volatile halogenated organic compounds (VHOCs) were investigated in the marine boundary air and surface seawater of the Changjiang (Yangtze River) estuary and its adjacent East China Sea in two cruises from March 11, 2015 to March 21, 2015 and from July 9, 2015 to July 20, 2015. Results revealed that the concentrations of released chlorofluorocarbons (CFCs) such as CFC-12, CFC-11, and CFC-114 in China decreased, suggesting that limitations set by the Chinese government on CFCs production and consumption have taken effect. Atmospheric concentrations of CFCs were affected by local industrial sources of emission and transport of terrestrial pollutants from coastal areas to varying degrees. Seasonal variations in atmospheric VHOCs were probably due to seasonal differences in prevalent monsoon and biogenic production. In the study periods, the investigated area was an essential source of atmospheric CH3Br and CH3I but was a net sink of CFC-12, CFC-11, and CH3Cl.
引用
收藏
页码：227 / 240
页数：14
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