Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-18-14465-2018 |
Atmospheric Delta O-17(NO3-) reveals nocturnal chemistry dominates nitrate production in Beijing haze | |
He, Pengzhen1; Xie, Zhouqing1,2,3; Chi, Xiyuan1; Yu, Xiawei1; Fan, Shidong1; Kang, Hui1; Liu, Cheng1,2,3; Zhan, Haicong1 | |
2018-10-10 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2018 |
卷号 | 18期号:19页码:14465-14476 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | The rapid mass increase of atmospheric nitrate is a critical driving force for the occurrence of fine-particle pollution (referred to as haze hereafter) in Beijing. However, the exact mechanisms for this rapid increase of nitrate mass have not been well constrained from field observations. Here we present the first observations of the oxygen-17 excess of atmospheric nitrate (Delta O-17(NO3-)) collected in Beijing haze to reveal the relative importance of different nitrate formation pathways, and we also present the simultaneously observed delta N-15(NO3-). During our sampling period, 12h averaged mass concentrations of PM2.5 varied from 16 to 323 mu g m(-3) with a mean of (141 +/- 88(1SD)) mu g m(-3), with nitrate ranging from 0.3 to 106.7 mu g m(-3). The observed Delta O-17(NO3-) ranged from 27.5 %0 to 33.9 %0 with a mean of (30.6 +/- 1.8)%0, while delta N-15(NO3-) ranged from -2.5 %0 to 19.2 %0 with a mean of (7.4 +/- 6.8)%0. Delta O-17(NO3-)-constrained calculations suggest nocturnal pathways (N2O5 + H2O/Cl- and NO3 + HC) dominated nitrate production during polluted days (PM2.5 >= 75 mu g m(-3)), with a mean possible fraction of 56-97 %. Our results illustrate the potentiality of Delta(17) in tracing nitrate formation pathways; future modeling work with the constraint of isotope data reported here may further improve our understanding of the nitrogen cycle during haze. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000446919300002 |
WOS关键词 | OXYGEN ISOTOPIC COMPOSITION ; OZONE DEPLETION EVENTS ; MARINE BOUNDARY-LAYER ; NORTH CHINA PLAIN ; NITROUS-ACID HONO ; HETEROGENEOUS REACTION ; PARTICULATE NITRATE ; COASTAL ANTARCTICA ; ANOMALY DELTA-O-17 ; SEASONAL-VARIATION |
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/30829 |
专题 | 地球科学 |
作者单位 | 1.Univ Sci & Technol China, Sch Earth & Space Sci, Anhui Prov Key Lab Polar Environm & Global Change, Hefei 230026, Anhui, Peoples R China; 2.Chinese Acad Sci, Ctr Excellence Urban Atmospher Environm, Inst Urban Environm, Xiamen 361021, Fujian, Peoples R China; 3.Chinese Acad Sci, Anhui Inst Opt & Fine Mech, Key Lab Environm Opt & Technol, Hefei 230031, Anhui, Peoples R China |
推荐引用方式 GB/T 7714 | He, Pengzhen,Xie, Zhouqing,Chi, Xiyuan,et al. Atmospheric Delta O-17(NO3-) reveals nocturnal chemistry dominates nitrate production in Beijing haze[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2018,18(19):14465-14476. |
APA | He, Pengzhen.,Xie, Zhouqing.,Chi, Xiyuan.,Yu, Xiawei.,Fan, Shidong.,...&Zhan, Haicong.(2018).Atmospheric Delta O-17(NO3-) reveals nocturnal chemistry dominates nitrate production in Beijing haze.ATMOSPHERIC CHEMISTRY AND PHYSICS,18(19),14465-14476. |
MLA | He, Pengzhen,et al."Atmospheric Delta O-17(NO3-) reveals nocturnal chemistry dominates nitrate production in Beijing haze".ATMOSPHERIC CHEMISTRY AND PHYSICS 18.19(2018):14465-14476. |
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