Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-6381-2018 |
Triple oxygen isotopes indicate urbanization affects sources of nitrate in wet and dry atmospheric deposition | |
Nelson, David M.1,2; Tsunogai, Urumu2; Ding, Dong2; Ohyama, Takuya2; Komatsu, Daisuke D.2,4; Nakagawa, Fumiko2; Noguchi, Izumi3; Yamaguchi, Takashi3 | |
2018-05-04 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS
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ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:9页码:6381-6392 |
文章类型 | Article |
语种 | 英语 |
国家 | USA; Japan |
英文摘要 | Atmospheric nitrate deposition resulting from anthropogenic activities negatively affects human and environmental health. Identifying deposited nitrate that is produced locally vs. that originating from long-distance transport would help inform efforts to mitigate such impacts. However, distinguishing the relative transport distances of atmospheric nitrate in urban areas remains a major challenge since it may be produced locally and/or be transported from upwind regions. To address this uncertainty we assessed spatiotemporal variation in monthly weighted-average Delta O-17 and delta N-15 values of wet and dry nitrate deposition during one year at urban and rural sites along the western coast of the northern Japanese island of Hokkaido, downwind of the East Asian continent. Delta O-17 values of nitrate in wet deposition at the urban site mirrored those of wet and dry deposition at the rural site, ranging between similar to+23 and +31 parts per thousand with higher values during winter and lower values in summer, which suggests the greater relative importance of oxidation of NO2 by O-3 during winter and OH during summer. In contrast, Delta O-17 values of nitrate in dry deposition at the urban site were lower (+19- +25 parts per thousand) and displayed less distinct seasonal variation. Furthermore, the difference between delta N-15 values of nitrate in wet and dry nitrate deposition was, on average, 3 parts per thousand greater at the urban than rural site, and Delta O-17 and delta N-15 values were correlated for both forms of deposition at both sites with the exception of dry deposition at the urban site. These results suggest that, relative to nitrate in wet and dry deposition in rural environments and wet deposition in urban environments, nitrate in dry deposition in urban environments forms from relatively greater oxidation of NO by peroxy radicals and/or oxidation of NO2 by OH. Given greater concentrations of peroxy radicals and OH in cities, these results imply that dry nitrate deposition results from local NOx emissions more so than wet deposition, which is transported longer distances. These results illustrate the value of stable isotope data for distinguishing the transport distances and reaction pathways of atmospheric nitrate pollution. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000431458800008 |
WOS关键词 | AIR-QUALITY ; NITROGEN DEPOSITION ; THEORETICAL CALCULATION ; FRACTIONATION FACTORS ; CHEMICAL CONVERSION ; SEASONAL-VARIATION ; FORMATION PATHWAYS ; NOY MOLECULES ; GAS-PHASE ; DELTA-O-17 |
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/30770 |
专题 | 地球科学 |
作者单位 | 1.Univ Maryland, Appalachian Lab, Ctr Environm Sci, Frostburg, MD 21532 USA; 2.Nagoya Univ, Grad Sch Environm Studies, Nagoya, Aichi 4648601, Japan; 3.Hokkaido Res Org, Inst Environm Sci, Dept Environm & Geol Res, Sapporo, Hokkaido 0600819, Japan; 4.Tokai Univ, Dept Marine & Earth Sci, Tokai, Ibaraki, Japan |
推荐引用方式 GB/T 7714 | Nelson, David M.,Tsunogai, Urumu,Ding, Dong,et al. Triple oxygen isotopes indicate urbanization affects sources of nitrate in wet and dry atmospheric deposition[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(9):6381-6392. |
APA | Nelson, David M..,Tsunogai, Urumu.,Ding, Dong.,Ohyama, Takuya.,Komatsu, Daisuke D..,...&Yamaguchi, Takashi.(2018).Triple oxygen isotopes indicate urbanization affects sources of nitrate in wet and dry atmospheric deposition.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(9),6381-6392. |
MLA | Nelson, David M.,et al."Triple oxygen isotopes indicate urbanization affects sources of nitrate in wet and dry atmospheric deposition".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.9(2018):6381-6392. |
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