Characterization of Chromophoric Water-Soluble Organic Matter in Urban, Forest, and Marine Aerosols by HR-ToF-AMS Analysis and Excitation Emission Matrix Spectroscopy

被引：148

作者：

Chen, Qingcai ^{[1
]}

Miyazaki, Yuzo ^{[3
]}

Kawamura, Kimitaka ^{[3
,10
]}

Matsumoto, Kiyoshi ^{[4
]}

Coburn, Sean ^{[5
,6
,11
]}

Volkamer, Rainer ^{[5
,6
]}

Iwamoto, Yoko ^{[2
,12
]}

Kagami, Sara ^{[1
]}

Deng, Yange ^{[1
]}

Ogawa, Shuhei ^{[1
]}

Ramasamy, Sathiyamurthi ^{[7
]}

Kato, Shungo ^{[8
]}

Ida, Akira ^{[7
,13
]}

Kajii, Yoshizumi ^{[7
,9
]}

Mochida, Michihiro ^{[1
]}

机构：

[1] Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi 4648601, Japan

[2] Nagoya Univ, Inst Adv Res, Nagoya, Aichi 4648601, Japan

[3] Hokkaido Univ, Inst Low Temp Sci, Sapporo, Hokkaido 0600819, Japan

[4] Univ Yamanashi, Interdisciplinary Grad Sch Med & Engn, Kofu, Yamanashi 4008510, Japan

[5] Univ Colorado, Dept Chem & Biochem, Boulder, CO 80309 USA

[6] Univ Colorado, Cooperat Inst Res Environm Sci CIRES, Boulder, CO 80309 USA

[7] Kyoto Univ, Grad Sch Global Environm Studies, Kyoto 6068501, Japan

[8] Tokyo Metropolitan Univ, Dept Appl Chem, Tokyo 1920397, Japan

[9] Natl Inst Environm Studies, Ctr Reg Environm Res, Tsukuba, Ibaraki 3058506, Japan

[10] Chubu Univ, Chubu Inst Adv Studies, Kasugai, Aichi 4878501, Japan

[11] Univ Colorado, Dept Mech Engn, Boulder, CO 80309 USA

[12] Tokyo Univ Sci, Fac Sci Div 1, Tokyo 1628601, Japan

[13] Seraku Co Ltd, Tokyo 1600023, Japan

来源：

ENVIRONMENTAL SCIENCE & TECHNOLOGY | 2016年 / 50卷 / 19期

基金：

美国国家科学基金会;

关键词：

BROWN CARBON; BOUNDARY-LAYER; MOLECULAR CHARACTERIZATION; FLUORESCENCE SPECTROSCOPY; ATMOSPHERIC AEROSOLS; OPTICAL-PROPERTIES; AQUEOUS REACTIONS; SUBSTANCES HULIS; LIGHT-ABSORPTION; SECONDARY;

D O I：

10.1021/acs.est.6b01643

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Chromophoric water-soluble organic matter in atmospheric aerosols potentially plays an important role in aqueous reactions and light absorption by organics. The fluorescence and chemical-structural characteristics of the chromophoric water-soluble organic matter in submicron aerosols collected in urban, forest, and marine environments (Nagoya, Kii Peninsula, and the tropical Eastern Pacific) were investigated using excitation emission matrices (EEMs) and a high-resolution aerosol mass spectrometer. A total of three types of water-soluble chromophores, two with fluorescence characteristics similar to those of humiclike substances (HULIS-1 and HULIS-2) and one with fluorescence characteristics similar to those of protein compounds (PLOM), were identified in atmospheric aerosols by parallel factor analysis (PARAFAC) for EEMs. We found that the chromophore components of HULIS-1 and -2 were associated with highly and less-oxygenated structures, respectively, which may provide a clue to understanding the chemical formation or loss of organic chromophores in atmospheric aerosols. Whereas HULIS-1 was ubiquitous in water-soluble chromophores over different environments, HULIS-2 was abundant only in terrestrial aerosols, and PLOM was abundant in marine aerosols. These findings are useful for further studies regarding the classification and source identification of chromophores in atmospheric aerosols.

引用

页码：10351 / 10360

页数：10

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