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Relative Humidity History Affects Hygroscopicity of Mixed Particles of Glyoxal and Reduced Nitrogenous Species
Chen, Xi1; Chu, Yangxi2; Chu, Yangxi3; Lee, Alex K.Y.4; Gen, Masao5; Kasthuriarachchi, Nethmi Yasara4; Chan, Chak K.2; Li, Yong Jie1
2020-06-16
Source PublicationEnvironmental Science and Technology
ABS Journal Level3
ISSN0013-936X
Volume54Issue:12Pages:7097-7106
Abstract

The relative humidity (RH) history that manifests the cycling of dehydration (water evaporation) and hydration (water uptake) may affect particle-phase reactions, products from which have strong influences on the physical properties and thus climatic effects of atmospheric particles. Using single-trapped particles, we show herein hygroscopic growths of mixed particles with reactive species undergoing three types of RH cycles, simulating different degrees of particle-phase reactions in the atmosphere. The reactive species are the widely known α-dicarbonyl glyoxal (GLY), and five reduced nitrogenous species, ammonium sulfate (AS), glycine (GC), l-alanine (AL), dimethylamine (DMA), and diethylamine (DEA). The results showed that the mixed particles after reactions generally had altered efflorescence relative humidity (ERH) and deliquescence relative humidity (DRH) values and reduced hygroscopic growths at moderately high RH (>80%) conditions. For example, with an additional slow drying step, the mean mass growth factors at 90% RH during dehydration dropped from 2.56 to 2.02 for GC/GLY mixed particles and from 2.45 to 1.23 for AL/GLY mixed particles. The reduced hygroscopicity with more RH cycling will thus lead to less efficient light scattering of the mixed particles, thereby resulting in less cooling and exacerbating direct heating due to light absorption by the products formed.

DOI10.1021/acs.est.0c00680
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000542229600009
Scopus ID2-s2.0-85086525051
Fulltext Access
FWCI0.46759248
Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorLi, Yong Jie
Affiliation1.Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macao
2.School of Energy and Environment, City University of Hong Kong, Hong Kong, Hong Kong
3.State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental Sciences, Beijing, 100012, China
4.Department of Civil and Environmental Engineering, National University of Singapore, Singapore, Singapore
5.Faculty of Frontier Engineering, Institute of Science and Engineering, Kanazawa University, Kanazawa, 920-1192, Japan
First Author AffilicationFaculty of Science and Technology
Corresponding Author AffilicationFaculty of Science and Technology
Recommended Citation
GB/T 7714
Chen, Xi,Chu, Yangxi,Chu, Yangxi,et al. Relative Humidity History Affects Hygroscopicity of Mixed Particles of Glyoxal and Reduced Nitrogenous Species[J]. Environmental Science and Technology,2020,54(12):7097-7106.
APA Chen, Xi,Chu, Yangxi,Chu, Yangxi,Lee, Alex K.Y.,Gen, Masao,Kasthuriarachchi, Nethmi Yasara,Chan, Chak K.,&Li, Yong Jie.(2020).Relative Humidity History Affects Hygroscopicity of Mixed Particles of Glyoxal and Reduced Nitrogenous Species.Environmental Science and Technology,54(12),7097-7106.
MLA Chen, Xi,et al."Relative Humidity History Affects Hygroscopicity of Mixed Particles of Glyoxal and Reduced Nitrogenous Species".Environmental Science and Technology 54.12(2020):7097-7106.
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