Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2019.06.015 |
Characteristics and sources of organic carbon in coastal and marine atmospheric particulates over East China | |
Ding, Xue1,2; Qi, Jianhua1,2; Meng, Xiangbin1 | |
2019-11-01 | |
发表期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2019 |
卷号 | 228页码:281-291 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | To understand the influences of emission sources, transport and environmental factors on the characteristics of organic carbonaceous aerosols in the marine area, organic carbon (OC) and water-soluble organic carbon (WSOC) were measured in atmospheric samples collected from the coastal region and over the Bohai and Yellow Seas from 2015 to 2016. Compared with the averages of 19.28 and 10.61 mu g.m(-3) in the coastal samples, the average concentrations of OC and WSOC decreased to 2.17 and 1.54 mu g.m(-3) in the marine aerosol samples, respectively. WSOC contributed 60% to OC in Qingdao, while 68.4% to OC over the ocean, suggesting that WSOC is likely influenced by the dissolved organic carbon (DOC) in surface seawater. The highest OC/EC ratios (6.56) were observed in the samples collected from the air masses originating from the north land source, indicating that OC mainly comes from anthropogenic sources. The OC concentrations in the air mass samples from marine sources were only 50% of those in the samples from terrestrial sources. A negative correlation between the WSOC and transport distance over the sea and decreased OC/EC ratios were observed, which indicated that the contribution of secondary organic carbon (SOC) to OC decreased during the transport from land to sea. OC increased by 88.5% under the influence of Asian dust, while WSOC did not exhibit substantial changes. The positive matrix factorization (PMF) model showed that anthropogenic sources were the major source of carbonaceous aerosols, contributing 70% of the OC in Qingdao. The positive correlation between OC and particulate matter (PM) suggested that the OC affected the air quality. |
英文关键词 | Aerosols Organic Carbon WSOC Dust Source |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000477686700023 |
WOS关键词 | LONG-RANGE TRANSPORT ; SEASONAL-VARIATION ; ELEMENTAL CARBON ; CHEMICAL CHARACTERISTICS ; AEROSOL CONCENTRATIONS ; AIR-POLLUTION ; DUST EPISODES ; PM2.5 ; PARTICLES ; QINGDAO |
WOS类目 | Meteorology & Atmospheric Sciences |
WOS研究方向 | Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/187882 |
专题 | 地球科学 |
作者单位 | 1.Ocean Univ China, Minist Educ, Key Lab Marine Environm & Ecol, Qingdao 266100, Shandong, Peoples R China; 2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao 266237, Shandong, Peoples R China |
推荐引用方式 GB/T 7714 | Ding, Xue,Qi, Jianhua,Meng, Xiangbin. Characteristics and sources of organic carbon in coastal and marine atmospheric particulates over East China[J]. ATMOSPHERIC RESEARCH,2019,228:281-291. |
APA | Ding, Xue,Qi, Jianhua,&Meng, Xiangbin.(2019).Characteristics and sources of organic carbon in coastal and marine atmospheric particulates over East China.ATMOSPHERIC RESEARCH,228,281-291. |
MLA | Ding, Xue,et al."Characteristics and sources of organic carbon in coastal and marine atmospheric particulates over East China".ATMOSPHERIC RESEARCH 228(2019):281-291. |
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