Residential Collegefalse
Status已發表Published
Multiphase Photochemistry of Iron-Chloride Containing Particles as a Source of Aqueous Chlorine Radicals and Its Effect on Sulfate Production
Gen, Masao1,2; Zhang, Ruifeng1; Li, Yongjie3; Chan, Chak K.1
2020-08-18
Source PublicationEnvironmental Science and Technology
ABS Journal Level3
ISSN0013-936X
Volume54Issue:16Pages:9862-9871
Abstract

Photolysis of iron chlorides is a well-known photolytic source of Cl· in environmental waters. However, the role of particulate chlorine radicals (Cl· and Cl2·-) in their multiphase oxidative potential has been much less explored. Herein, we examine the effect of Cl·/Cl2·- produced from photolysis of particulate iron chlorides on atmospheric multiphase oxidation. As a model system, experiments on multiphase oxidation of SO2 by Cl·/Cl2·- were performed. Fast sulfate production from SO2 oxidation was observed with reactive uptake coefficients of ∼10-5, comparable to the values necessary for explaining the observations in the haze events in China. The experimental and modeling results found a good positive correlation between the uptake coefficient, γSO2, and the Cl· production rate, d[Cl·]/dt, as γSO2 = 5.3 × 10-6 × log(d[Cl·]/dt) + 4.9 × 10-5. When commonly found particulate dicarboxylic acids (oxalic acid or malonic acid) were added, sulfate production was delayed due to the competition of Fe3+ between chloride and the dicarboxylic acid for its complexation at the initial stage. After the delay, comparable sulfate production was observed. The present study highlights the importance of photochemistry of particulate iron chlorides in multiphase oxidation processes in the atmosphere.

DOI10.1021/acs.est.0c01540
URLView the original
Indexed BySCIE
Language英語English
WOS Research AreaEngineering, Environmental ; Environmental Sciences
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000563025000013
PublisherAMER CHEMICAL SOC, 1155 16TH ST, NW, WASHINGTON, DC 20036
Scopus ID2-s2.0-85089709218
Fulltext Access
FWCI0.7949072
Citation statistics
Document TypeJournal article
CollectionDEPARTMENT OF CIVIL AND ENVIRONMENTAL ENGINEERING
Corresponding AuthorChan, Chak K.
Affiliation1.School of Energy and Environment, City University of Hong Kong, Kowloon Hong Kong, Tat Chee Avenue, China
2.Faculty of Frontier Engineering, Institute of Science and Engineering, Kanazawa University, Kakuma-machi, Kanazawa, 920-1192, Japan
3.Department of Civil and Environmental Engineering, Faculty of Science and Technology, University of Macau, Macau, 999078, Macao
Recommended Citation
GB/T 7714
Gen, Masao,Zhang, Ruifeng,Li, Yongjie,et al. Multiphase Photochemistry of Iron-Chloride Containing Particles as a Source of Aqueous Chlorine Radicals and Its Effect on Sulfate Production[J]. Environmental Science and Technology,2020,54(16):9862-9871.
APA Gen, Masao,Zhang, Ruifeng,Li, Yongjie,&Chan, Chak K..(2020).Multiphase Photochemistry of Iron-Chloride Containing Particles as a Source of Aqueous Chlorine Radicals and Its Effect on Sulfate Production.Environmental Science and Technology,54(16),9862-9871.
MLA Gen, Masao,et al."Multiphase Photochemistry of Iron-Chloride Containing Particles as a Source of Aqueous Chlorine Radicals and Its Effect on Sulfate Production".Environmental Science and Technology 54.16(2020):9862-9871.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Gen, Masao]'s Articles
[Zhang, Ruifeng]'s Articles
[Li, Yongjie]'s Articles
Baidu academic
Similar articles in Baidu academic
[Gen, Masao]'s Articles
[Zhang, Ruifeng]'s Articles
[Li, Yongjie]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Gen, Masao]'s Articles
[Zhang, Ruifeng]'s Articles
[Li, Yongjie]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.