文献类型：期刊文献

英文题名：Chemical Composition and Sources of Marine Aerosol over the Western North Pacific Ocean in Winter

作者：Xiao, Hong-Wei[1,2];Xiao, Hua-Yun[1,2];Shen, Chun-Yan[3];Zhang, Zhong-Yi[1,2];Long, Ai-Min[4]

机构：[1]East China Univ Technol, Jiangxi Prov Key Lab Causes & Control Atmospher P, Nanchang 330013, Jiangxi, Peoples R China;[2]East China Univ Technol, Sch Water Resources & Environm Engn, Nanchang 330013, Jiangxi, Peoples R China;[3]Guangdong Ocean Univ, Coll Fisheries, Zhanjiang 524088, Peoples R China;[4]Chinese Acad Sci, South China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China

年份：2018

卷号：9

期号：8

外文期刊名：ATMOSPHERE

收录：SCI-EXPANDED(收录号：WOS:000443247300012)、、EI(收录号：20183305694860)、Scopus(收录号：2-s2.0-85054930617)、WOS

基金：This work was supported by the National Natural Science Foundation of China (Grant no. 41663003, 41425014, and 41203015), Strategic Priority Research Program of the Chinese Academy of Sciences (grant nos. XDA11030103 and XDA11020202), Doctoral Scientific Research Foundation of East China University of Technology (Grant no. DHBK2015327), Research Foundation of Key Laboratory of Nuclear Resources and Environment (Grant no. Z1609) and Scientific Research Foundation of East China University of Technology for Science and Technology Innovation Team (Grant no. DHKT2015101).

语种：英文

外文关键词：marine aerosol; source apportionment; Western North Pacific Ocean; total suspended particulates; ionic composition

外文摘要：Atmospheric deposition of long-range transported continental substances from natural and anthropogenic sources affects biogeochemical processes in marine systems. Emissions of sea spray contribute aerosol particles to the marine atmosphere. Despite the importance of continental dispersion and atmospheric processes involving aerosol particles within remote marine atmosphere, knowledge of the sources of various water-soluble ions is limited because of insufficient observations. Concentrations of Total suspended particulates (TSPs) and major inorganic ions (Cl-, Na+, SO42-, Mg2+, Ca2+, K+, NO3-, NH4+), as well as organic nitrogen (ON-N) values, were measured in marine aerosol collected over the western north Pacific (WNP) during a cruise from 3 December 2014 to 13 March 2015. Aerosol samples were analyzed to determine their chemical characteristics and a source apportionment for this region and the continental influence on the open ocean when air masses are from continent in winter. TSP mass concentrations ranged from 14.1 to 136.0 g/m(3) with an average of 44.8 +/- 28.1 g/m(3). Concentrations of TSPs and major ions were higher near the coast (close to Qingdao and Xiamen) and lower over the open ocean. The total mass of inorganic ions and organic nitrogen accounted for 51.1% of the total TSP. Cl- had highest concentrations among the major inorganic ions, followed by SO42-, NO3-, Mg2(+), Ca2+, K+, and NH4+, respectively. However, Cl- showed a deficit relative to Na+ in most samples, likely related to heterogeneous reactions within the marine atmosphere. Most SO42-, Mg2+, Ca2+, and K+ were from sea salt, while other major ions were from continental sources. The non-sea-salt (nss) fractions of Ca2+, Mg2+ and K+ were derived from continental crust, while nss-SO42- and NO3- were derived from anthropogenic sources. ON had several sources, including reactions of NOx with volatile organic compounds (anthropogenic sources) or NH3 with gaseous hydrocarbons, as well as crustal and marine biogenic sources.