Atmospheric aerosol compositions over the South China Sea: temporal variability and source apportionment
Xiao, HW; Xiao, HY; Luo, L; Shen, CY; Long, AM; Chen, L; Long, ZH; Li, DN; xiaohuayun@ecit.cn; luoli@ecit.cn
2017
发表期刊ATMOSPHERIC CHEMISTRY AND PHYSICS
卷号17期号:4页码:3199-3214
摘要In order to evaluate impacts of different source emission on marine atmospheric particles over the South China Sea (SCS), major inorganic ionic concentrations (Na+, Cl-, SO42-, Ca2+, Mg2+, K+, NH4+ and NO3-) were determined in total suspended particulates (TSPs) at Yongxing Island, from March 2014 to February 2015. The annual average concentration of TSPs was 89.6 +/- 68.0 mu g m(-3), with 114.7 +/- 82.1, 60.4 +/- 27.0 and 59.5 +/- 25.6 mu g m(-3) in cool, warm and transition seasons, respectively. Cl- had the highest concentration, with an annual average of 7.73 +/- 5.99 mu g m(-3), followed by SO42- (5.54 +/- 3.65 mu g m(-3)), Na+ (4.00 +/- 1.88 mu g m(-3) ),Ca+2 C (2.15 +/- 1.54 mu g m(-3) /, NO3- (1.95 +/- 1.34 mu g m(-3)), Mg+2 (0.44 +/- 0.33 mu g m(-3)), K+ (0.33 +/- 0.22 mu g m(-3)) and NH4+ (0.07 +/- 0.07 mu g m(-3)) Concentrations of TSPs and the major ions showed seasonal variations, which were higher in the cool season and lower in the warm and transition seasons. Factors of influence were wind speed, temperature, relatively humidity, rain and air mass source region. Back trajectories, concentration- weighted trajectories (CWTs), and positive matrix factorization (PMF) of chemical compositions were analyzed for source apportionment, source contribution and spatiotemporal variation of major ions. Back trajectories and CWTs showed that air masses at Yongxing Island were mainly from the northeast, southwest and southeast in the cool, warm and transition seasons, respectively. The PMF results showed that 77.4% of Na+ and 99.3% of Cl- were from sea salt; 60.5% of NH4+ was from oceanic emission. Anthropogenic sources were very important for atmospheric aerosols over the island. Secondary inorganic aerosol of SO2 and NOx from fossil fuel combustion (especially coal in Chinese coastal regions) was the dominant source of NO3- (69.5 %) and SO42- (57.5 %).
部门归属[Xiao, Hong-Wei; Xiao, Hua-Yun; Luo, Li] East China Univ Technol, Atmospher Environm Lab, Key Lab Nucl Resources & Environm, Minist Educ, Nanchang 330013, Jiangxi, Peoples R China; [Xiao, Hong-Wei; Xiao, Hua-Yun; Luo, Li] East China Univ Technol, Sch Water Resources & Environm Engn, Nanchang 330013, Jiangxi, Peoples R China; [Shen, Chun-Yan] Guangdong Ocean Univ, Coll Fisheries, Zhanjiang 524088, Peoples R China; [Long, Ai-Min] Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Chen, Lin; Long, Zhen-Hua; Li, Da-Ning] Chinese Acad Sci, South China Sea Inst Oceanol, Xisha Deep Sea Marine Environm Observat & Res Stn, Sansha 573199, Peoples R China; [Long, Ai-Min] Univ Chinese Acad Sci, Coll Earth Sci, Beijing 100049, Peoples R China
资助项目LTO
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/16439
专题热带海洋环境国家重点实验室(LTO)
通讯作者xiaohuayun@ecit.cn; luoli@ecit.cn
推荐引用方式
GB/T 7714
Xiao, HW,Xiao, HY,Luo, L,et al. Atmospheric aerosol compositions over the South China Sea: temporal variability and source apportionment[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(4):3199-3214.
APA Xiao, HW.,Xiao, HY.,Luo, L.,Shen, CY.,Long, AM.,...&luoli@ecit.cn.(2017).Atmospheric aerosol compositions over the South China Sea: temporal variability and source apportionment.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(4),3199-3214.
MLA Xiao, HW,et al."Atmospheric aerosol compositions over the South China Sea: temporal variability and source apportionment".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.4(2017):3199-3214.
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