| YANG Guipeng,LI Li,LU Xiaolan,ZHANG Liang. 2015. Distributions and sea-to-air fluxes of volatile halocarbons in the southern Yellow Sea and the East China Sea. Acta Oceanologica Sinica, 34(2):9－20 |
| Distributions and sea-to-air fluxes of volatile halocarbons in the southern Yellow Sea and the East China Sea |
| 南黄海和中国东海中挥发性卤代烃的分布与海气通量 |
| Received:October 10, 2013 Revised:February 15, 2014 |
| DOI：10.1007/s13131-015-0622-y |
| Key words:volatile halocarbons distribution southern Yellow Sea East China Sea sea-to-air flux |
| 中文关键词: 挥发性卤代烃 分布 南黄海 中国东海 海气通量 |
| 基金项目:Foundation item: The National Natural Science Foundation of China under contract Nos 41320104008 and 40776039; the National Na-tural Science Foundation for Creative Research Groups under contract No. 41221004; the Changjiang Scholars Program, Ministry of Education of China; the "Taishan Scholar" Special Research Fund of Shandong Province, China. |
| Author Name | Affiliation | E-mail | | YANG Guipeng | Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education / College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China | gpyang@ouc.edu.cn | | LI Li | Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education / College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China | | | LU Xiaolan | Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education / College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China | | | ZHANG Liang | Key Laboratory of Marine Chemistry Theory and Technology, Ministry of Education / College of Chemistry and Chemical Engineering, Ocean University of China, Qingdao 266100, China | |
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| Abstract: |
| Distributions and sea-to-air fluxes of five kinds of volatile halocarbons (VHCs) were studied in the southern Yellow Sea (SYS) and the East China Sea (ECS) in November 2007. The results showed that the concentrations of 1,1,1-trichloroethane (C2H3Cl3), 1,1-dichloroethene (C2H2Cl2), 1,1,2-trichloroethene (C2HCl3), trichloromethane (CHCl3) and tetrachloromethane (CCl4) in the surface water were 0.31-4.81, 2.75-21.3, 1.21-17.1, 5.02-233 and 0.045-4.47 pmol/L, respectively, with the average values of 1.89, 12.20, 6.93, 60.90 and 0.33 pmol/L. On the whole, the horizontal distributions of C2H3Cl3, C2H2Cl2 and CCl4 were affected mainly by anthropogenic activities, while C2HCl3 and CHCl3 were influenced by biological factors as well as anthropogenic activities. In the study area, the concentrations of VHCs (except C2HCl3) exhibited a decreasing trend from inshore to offshore sites, with the higher values occurring in the coastal waters. The sea-to-air fluxes of C2H3Cl3, C2HCl3, CHCl3 and CCl4 were calculated to be -56.00-(-5.68), -7.31-123.42, 148.00-1 309.31 and -83.32-(-1.53) nmol/(m2·d), respectively, with the average values of -6.77, 17.14, 183.38 and -21.27 nmol/(m2·d). Our data showed that the SYS and ECS in autumn was a sink for C2H3Cl3 and CCl4, while it was a source for C2HCl3 and CHCl3 in the atmosphere. |
| 中文摘要: |
| 于2007年11月对中国南黄海和东海海域中5种挥发性卤代烃(VHCs)的分布和海-气通量进行了研究.研究结果表明,表层海水中1,1,1-三氯乙烷(C2H3Cl3)、1,1-二氯乙烯(C2H2Cl2)、三氯乙烯(C2HCl3)、三氯甲烷(CHCl3)和四氯化碳(CCl4)的浓度范围分别为0.31-4.81、2.75-21.3、1.21-17.1、5.02-233和0.045-4.47pmol/L,平均浓度分别为1.89、12.20、6.93、60.90和0.33 pmol/L.VHCs(C2HCl3除外)的浓度水平分布总体上呈现近岸高于外海、近岸偏高的分布趋势.C2H3Cl3、C2H2Cl2和CCl4的水平分布主要受人为活动的影响,CHCl3和C2HCl3的水平分布受生物活动和人为活动的影响.C2H3Cl3、C2HCl3、CHCl3和CCl4的海-气通量分别为-56.00- -5.68、-7.31-123.42、148.00-1309.31和-83.32- -1.53 nmol/m2·d,平均值分别为-6.77、17.14、183.38和 -21.27 nmol/(m2·d).计算结果表明秋季南黄海和东海是C2H3Cl3和CCl4的汇,但是该研究区域是C2HCl3和CHCl3的源. |
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