文献详情
Impact of particle chemical composition and water content on the photolytic reduction of particle-bound mercury
文献类型：期刊
通讯作者：Wang, XJ (reprint author), Peking Univ, Coll Urban & Environm Sci, MOE Lab Earth Surface Proc, Beijing 100871, Peoples R China.; Tong, YD (reprint author), Tianjin Univ, Sch Environm Sci & Engn, Tianjin 300072, Peoples R China.
期刊名称：ATMOSPHERIC ENVIRONMENT影响因子和分区
年：2019
卷：200
页码：24-33
ISSN：1352-2310
关键词：Particle-bound mercury; Photolytic reduction; Major chemical composition; Water content; Reduction rate
所属部门：环境学院
摘要：The current understanding of Hg(II) photolytic reduction in atmospheric particles is inadequate. This study addresses the impacts of the particle chemical composition (e.g. anions, trace elements, and carbon concentrations) and water content on the Hg(II) photolytic reduction process under ambient conditions. The results showed that Hg(II) in particles was significantly reduced under irradiation and this process could be prohibited by certain heavy metals and promoted by increasing water content ...More
The current understanding of Hg(II) photolytic reduction in atmospheric particles is inadequate. This study addresses the impacts of the particle chemical composition (e.g. anions, trace elements, and carbon concentrations) and water content on the Hg(II) photolytic reduction process under ambient conditions. The results showed that Hg(II) in particles was significantly reduced under irradiation and this process could be prohibited by certain heavy metals and promoted by increasing water content in particles. Negligible evolved Hg(0) amount was observed from particles under dark condition (occupying for < 0.5% in particle-bound mercury). With a 10% increase in water content, the corresponding Hg(II) reduction rate increased by 1-5% after 30 min of light exposure (at an irradiance of 1000 W/m(2)). The Hg(II) photolytic reduction in particles generally correlates with first-order reaction kinetics, with a half-life in a clear sky of 1.6 and 12.2 h for particles collected in the summer and winter, respectively. This study demonstrates that Hg(0) evolves quickly under light exposure regardless of whether the particles are wet or dry, and these processes need to be specified in future atmospheric Hg modelling. ...Hide

DOI：10.1016/j.atmosenv.2018.11.054
百度学术：Impact of particle chemical composition and water content on the photolytic reduction of particle-bound mercury
语言：外文
被引频次：2
基金：National Natural Science Foundation of ChinaNational Natural Science Foundation of China [41630748, 41501517, 41821005, 41571130010]; Natural Science Foundation of TianjinNatural Science Foundation of Tianjin [16JCQNJC08300]
作者其他论文



Succumb to habit: Behavioral evidence for overreliance on habit learning in Internet addicts.Zhou, Bingping, Wang, Wei, Zhang, Wei, et al. .COMPUTERS IN HUMAN BEHAVIOR. 2018, 89, 230-236.
Digital transformation by SME entrepreneurs: A capability perspective.Li, Liang, Su, Fang, Zhang, Wei, et al. .INFORMATION SYSTEMS JOURNAL. 2018, 28(6,SI), 1129-1157.
High-resolution vehicle emission inventory and emission control policy scenario analysis, a case in the Beijing-Tianjin-Hebei (BTH) region, China.Yang, Wen, Yu, Chengyao, Yuan, Wen, et al. .JOURNAL OF CLEANER PRODUCTION. 2018, 203, 530-539.
Comparison of Reactive Gaseous Mercury Collection by Different Sampling Methods in a Laboratory Test and Field Monitoring.Bu, Xiaoge, Zhang, Hefeng, Lv, Guangkuo, et al. .ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS. 2018, 5(10), 600-607.
Bilinear decompositions for products of Hardy and Lipschitz spaces on spaces of homogeneous type.Liu, Liguang, Yang, Dachun, Yuan, Wen,.DISSERTATIONES MATHEMATICAE. 2018, 4-+.