Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1016/j.atmosres.2018.01.007 |
Seasonal variations of low molecular weight hydroxy-dicarboxylic acids and oxaloacetic acid in remote marine aerosols from Chichijima Island in the western North Pacific (December 2010-November 2011) | |
Gowda, Divyavani1,2; Kawamura, Kimitaka2 | |
2018-05-15 | |
发表期刊 | ATMOSPHERIC RESEARCH
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ISSN | 0169-8095 |
EISSN | 1873-2895 |
出版年 | 2018 |
卷号 | 204页码:128-135 |
文章类型 | Article |
语种 | 英语 |
国家 | Japan |
英文摘要 | Concentrations of homologous hydroxy-dicarboxylic acids (diacids) (hC(3)-hC(6)) and keto-diacid (oxaloacetic acid) were measured in the atmospheric aerosols collected at Chichijima Island (27.04 degrees N, 142.13 degrees E) in the western North Pacific from December 2010 to November 2011. The monthly averaged concentrations of hydroxy-diacids and oxaloacetic acid were significantly higher in spring followed by winter and autumn. Molecular distributions of hydroxy-diacids demonstrated that malic acid was the most abundant species in all four seasons, followed by tartronic acid in winter and spring and 3- and 2-hydroxyglutaric acids in summer and autumn. Hydroxy-diacids and keto-diacid maximized in spring and winter when air masses originated from the Asian continent with westerly winds. The concentrations of total hydroxy-diacids and oxaloacetic acid ranged from 0.1 to 27.3 ng m(-3) and < 0.005 to 2 ng m(-3), respectively. The enhanced concentrations of diacids and their intermediates in winter and spring are associated with a long-range atmospheric transport of pollutants from East Asia to remote Chichijima Island followed by photochemical processing of organic aerosols. Seasonal molecular distribution of hydroxy-diacids and oxaloacetic acid was found to be dependent on the source strengths and plausible photochemical processing to form smaller diacids. Moderate to strong correlations among hydroxy-diacids, oxaloacetic acid and low molecular weight (LMW) diacids suggest that hydroxy-diacids and oxaloacetic acid are the intermediates in the photochemical oxidation of LMW diacid. Hence, photochemical formation of the most abundant LMW diacids, i.e., oxalic acid, could be produced from hydroxy- and keto-diacid as intermediates. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000428494800011 |
WOS关键词 | OMEGA-OXOCARBOXYLIC ACIDS ; AIR-POLLUTION SOURCES ; ALPHA-DICARBONYLS ; ORGANIC-COMPOUNDS ; PYRUVIC-ACID ; IDENTIFICATION ; PARTICLES ; EMISSIONS ; GAS ; DISTRIBUTIONS |
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/38102 |
专题 | 地球科学 |
作者单位 | 1.Hokkaido Univ, Grad Sch Environm Sci, Sapporo, Hokkaido, Japan; 2.Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido, Japan |
推荐引用方式 GB/T 7714 | Gowda, Divyavani,Kawamura, Kimitaka. Seasonal variations of low molecular weight hydroxy-dicarboxylic acids and oxaloacetic acid in remote marine aerosols from Chichijima Island in the western North Pacific (December 2010-November 2011)[J]. ATMOSPHERIC RESEARCH,2018,204:128-135. |
APA | Gowda, Divyavani,&Kawamura, Kimitaka.(2018).Seasonal variations of low molecular weight hydroxy-dicarboxylic acids and oxaloacetic acid in remote marine aerosols from Chichijima Island in the western North Pacific (December 2010-November 2011).ATMOSPHERIC RESEARCH,204,128-135. |
MLA | Gowda, Divyavani,et al."Seasonal variations of low molecular weight hydroxy-dicarboxylic acids and oxaloacetic acid in remote marine aerosols from Chichijima Island in the western North Pacific (December 2010-November 2011)".ATMOSPHERIC RESEARCH 204(2018):128-135. |
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