Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1088/1748-9326/ab7b26 |
Is oxidation of atmospheric mercury controlled by different mechanisms in the polluted continental boundary layer vs. remote marine boundary layer? | |
Gabay, Maor1; Raveh-Rubin, Shira2; Peleg, Mordechai3,4; Fredj, Erick5; Tas, Eran1 | |
2020-06-01 | |
发表期刊 | ENVIRONMENTAL RESEARCH LETTERS
![]() |
ISSN | 1748-9326 |
出版年 | 2020 |
卷号 | 15期号:6 |
文章类型 | Article |
语种 | 英语 |
国家 | Israel |
英文摘要 | Deposition of atmospheric mercury is of global concern, primarily due to health effects associated with efficient bioaccumulation of mercury in marine food webs. Although oxidation of gaseous elementary mercury (GEM), the major fraction of atmospheric mercury, is a critical stage in regulating atmospheric mercury deposition efficiency, this oxidation is currently not well-characterized, limiting modeling-based assessments of mercury in the environment. Based on a previous study, we hypothesized that the oxidation of GEM is predominantly controlled by multistep bromine- and chlorine-induced oxidation (MBCO) in the remote marine boundary layer (RMBL), and by photochemical smog oxidants, primarily ozone (O-3) and hydroxyl radical (OH), in the polluted continental boundary layer (PCBL). To test this hypothesis, we used the following analyses: (i) application of a newly developed criterion to evaluate the gaseous oxidized mercury (GOM)-O-3 association based on previous studies in the RMBL and PCBL; (ii) measurement-based box simulations of GEM oxidation in the RMBL and at a PCBL site; and (iii) measurement-based analysis of photochemical oxidation vs. other processes which potentially influence GOM. Our model simulations indicated that the MBCO mechanism can reproduce GOM levels in the RMBL, but not in the PCBL. Our data analysis suggested the important role of photochemical smog oxidants in GEM oxidation in the PCBL, potentially masked by the effect of relative humidity and entrainment of free tropospheric air. |
英文关键词 | Atmospheric mercury oxidation GEM GOM photochemistry ozone hydroxyl radical field measurements |
领域 | 气候变化 |
收录类别 | SCI-E |
WOS记录号 | WOS:000539742400001 |
WOS关键词 | GASEOUS ELEMENTAL MERCURY ; GAS-PHASE OXIDATION ; OXIDIZED MERCURY ; SCIENTIFIC UNCERTAINTIES ; HALOGEN CHEMISTRY ; NEGEV DESERT ; MODEL ; OH ; HO2 ; BROMINE |
WOS类目 | Environmental Sciences ; Meteorology & Atmospheric Sciences |
WOS研究方向 | Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/279333 |
专题 | 气候变化 |
作者单位 | 1.Hebrew Univ Jerusalem, Dept Soil & Water Sci, Robert H Smith Fac Agr Food & Environm, Rehovot, Israel; 2.Weizmann Inst Sci, Dept Earth & Planetary Sci, Rehovot, Israel; 3.Inst Earth Sci, Edmond J Safra Campus, Givat Ram, Israel; 4.Hebrew Univ Jerusalem, IL-91904 Jerusalem, Israel; 5.Jerusalem Coll Technol, Dept Comp Sci, IL-91160 Jerusalem, Israel |
推荐引用方式 GB/T 7714 | Gabay, Maor,Raveh-Rubin, Shira,Peleg, Mordechai,et al. Is oxidation of atmospheric mercury controlled by different mechanisms in the polluted continental boundary layer vs. remote marine boundary layer?[J]. ENVIRONMENTAL RESEARCH LETTERS,2020,15(6). |
APA | Gabay, Maor,Raveh-Rubin, Shira,Peleg, Mordechai,Fredj, Erick,&Tas, Eran.(2020).Is oxidation of atmospheric mercury controlled by different mechanisms in the polluted continental boundary layer vs. remote marine boundary layer?.ENVIRONMENTAL RESEARCH LETTERS,15(6). |
MLA | Gabay, Maor,et al."Is oxidation of atmospheric mercury controlled by different mechanisms in the polluted continental boundary layer vs. remote marine boundary layer?".ENVIRONMENTAL RESEARCH LETTERS 15.6(2020). |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。
修改评论