DOI: 10.1016/j.atmosenv.2016.11.013
Scopus记录号: 2-s2.0-84995743765
论文题名: Variations in atmospheric concentrations and isotopic compositions of gaseous and particulate boron in Shizuoka City, Japan
作者: Sakata M ; , Phan H ; G ; , Mitsunobu S
刊名: Atmospheric Environment
ISSN: 0168-2563
EISSN: 1573-515X
出版年: 2017
卷: 148 起始页码: 376
结束页码: 381
语种: 英语
英文关键词: Atmospheric concentration
; Boron
; Isotopic composition
; Isotopic fractionation
; Phase partitioning
; Sea-salt degassing
Scopus关键词: Atmospheric chemistry
; Boron
; Degassing
; Isotopes
; Atmospheric concentration
; Isotopic composition
; Isotopic fractionations
; Phase partitioning
; Sea salts
; Coal combustion
; boron
; anthropogenic source
; atmospheric chemistry
; boron isotope
; coal combustion
; concentration (composition)
; degassing
; isotopic composition
; isotopic fractionation
; particle size
; partitioning
; precipitation (chemistry)
; sea salt
; seasonal variation
; air pollution
; Article
; chemical composition
; combustion
; concentration (parameters)
; fractionation
; high temperature
; Japan
; Pacific Ocean
; particulate matter
; priority journal
; seasonal variation
; summer
; wind
; winter
; Chubu
; Honshu
; Japan
; Pacific Ocean
; Shizuoka [Chubu]
Scopus学科分类: Environmental Science: Water Science and Technology
; Earth and Planetary Sciences: Earth-Surface Processes
; Environmental Science: Environmental Chemistry
英文摘要: To clarify the partitioning and isotopic fractionation of boron (B) into the gas and particle phases in the atmosphere, the concentrations and isotopic compositions of gaseous and particulate B were measured concurrently for more than one year at a site in Shizuoka City, Japan. This area has few anthropogenic sources of B, such as coal combustion facilities. Gaseous B concentration showed clearly a seasonal variation, increasing during summer and decreasing during winter. Conversely, particulate B concentration tended to decrease during the warm season and increase during winter. The increase in gaseous B concentration during summer is attributable to the enhanced emissions of B from sea-salt degassing owing to higher temperatures and the predominance of winds from the Pacific Ocean. Moreover, the decrease in gaseous B concentration and the increase in particulate B concentration during winter is probably due to the enhanced condensation of gaseous B on atmospheric particles. The δ11B values of gaseous and particulate B varied largely, and did not indicate a distinctive seasonal variation. A positive correlation was observed between the δ11B values of gaseous and particulate B (R2 = 0.518, P < 0.001). Moreover, the δ11B values of particulate B were approximately 0–20‰ lower than those of gaseous B. There is an isotopic fractionation (ΔB(OH)4 −−B(OH)3) of about −20‰ between B(OH)3 and B(OH)4 − species in solution (Kakihana et al., 1977). This tends to support the hypotheses that gaseous B is transformed to particulate B through the reaction of condensed B(OH)3 with chemical constituents on particles to precipitate borates, and that the condensed B(OH)3 remaining on particles is unstable and evaporates. © 2016 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/82314
Appears in Collections: 气候变化事实与影响
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作者单位: Graduate Program in Environmental Health Sciences, University of Shizuoka, 52-1 YadaShizuoka, Japan; Graduate School of Agriculture, Ehime University, 3-5-7 Tarumi, Matsuyama, Japan
Recommended Citation:
Sakata M,, Phan H,G,et al. Variations in atmospheric concentrations and isotopic compositions of gaseous and particulate boron in Shizuoka City, Japan[J]. Atmospheric Environment,2017-01-01,148