DOI: 10.1016/j.atmosres.2018.04.019
Scopus记录号: 2-s2.0-85047378821
论文题名: Characteristics and sources of mercury in precipitation collected at the urban, suburban and rural sites in a city of Southeast China
作者: Zhao L. ; Xu L. ; Wu X. ; Zhao G. ; Jiao L. ; Chen J. ; Hong Y. ; Deng J. ; Chen Y. ; Yang K. ; Hu G. ; Yu R.
刊名: Atmospheric Research
ISSN: 1698095
出版年: 2018
卷: 211 起始页码: 21
结束页码: 29
语种: 英语
英文关键词: Flux
; Methyl mercury
; Spatial distribution
; Total mercury
; Wet deposition
; Xiamen
Scopus关键词: Deposition
; Fluxes
; Principal component analysis
; Rural areas
; Spatial distribution
; Methyl mercury
; Oxidation process
; Precipitation samples
; Seasonal characteristics
; Total mercuries
; Wet deposition
; Wet deposition flux
; Xiamen
; Urban growth
; concentration (composition)
; mercury (element)
; methylmercury
; oxidation
; precipitation (climatology)
; rural area
; spatial distribution
; suburban area
; urban area
; wet deposition
; China
; Fujian
; Xiamen
英文摘要: Weekly precipitation samples were collected simultaneously at the urban, suburban, and rural sites in Xiamen, China during 2016–2017 to investigate the characteristics and sources of total mercury (THg) and methyl mercury (MeHg) in precipitation. The annual volume-weight mean (VWM) concentrations of the three areas were in the ranges of 7.9–8.9 ng L−1 for THg and 0.070–0.089 ng L−1 for MeHg, and the wet deposition fluxes were 8.8–11.4 μg m−2 and 0.074–0.12 μg m−2 for the study period of 11 months, respectively. ANONA test revealed that no significant difference of THg concentration among sites, however, the seasonal characteristics of THg strongly depended on the types of locations. THg concentration was the highest in summer at the urban and suburban sites and elevated in winter at the rural site. Urban/suburban THg deposition was closely correlated to both of concentration and precipitation amount, but rural THg deposition was only correlated to precipitation amount. Principal component analysis (PCA) extracted a source factor with high loading for both of THg and MeHg along with secondary inorganic ions. The result suggested that the scavenging of GOM oxidized from GEM in the atmosphere was probably the important source of Hg in precipitation. The oxidation processes also had a positive effect on the formation of MeHg during the study period. © 2018 Elsevier B.V. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/108841
Appears in Collections: 影响、适应和脆弱性 气候变化事实与影响
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作者单位: Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; Key Lab of Urban Environment and Health, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021, China; College of Chemical Engineering, Huaqiao University, Xiamen, 361021, China; Graduate School of Chinese Academy of Sciences, Beijing, 100049, China; Academy of Resource and Environment, Fujian Agriculture and Forestry University, Fuzhou, 350002, China
Recommended Citation:
Zhao L.,Xu L.,Wu X.,et al. Characteristics and sources of mercury in precipitation collected at the urban, suburban and rural sites in a city of Southeast China[J]. Atmospheric Research,2018-01-01,211