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DOI | 10.5194/acp-17-10619-2017 |
Decoupling peroxyacetyl nitrate from ozone in Chinese outflows observed at Gosan Climate Observatory | |
Han, Jihyun1,4; Lee, Meehye1; Shang, Xiaona1; Lee, Gangwoong2; Emmons, Louisa K.3 | |
2017-09-08 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:17 |
文章类型 | Article |
语种 | 英语 |
国家 | South Korea; USA |
英文摘要 | We measured peroxyacetyl nitrate (PAN) and other reactive species such as O-3, NO2, CO, and SO2 with aerosols including mass, organic carbon (OC), and elemental carbon (EC) in PM2.5 and K+ in PM1.0 at Gosan Climate Observatory in Korea (33.17 degrees N, 126.10 degrees E) during 19 October-6 November 2010. PAN was determined through fast gas chromatography with luminol chemiluminescence detection at 425 nm every 2 min. The PAN mixing ratios ranged from 0.1 (detection limit) to 2.4 ppbv with a mean of 0.6 ppbv. For all measurements, PAN was unusually better correlated with PM2.5 (Pearson correlation coefficient, gamma = 0.79) than with O-3 (gamma = 0.67). In particular, the O-3 level was highly elevated with SO2 at midnight, along with a typical midday peak when air was transported rapidly from the Beijing areas. The PAN enhancement was most noticeable during the occurrence of haze under stagnant conditions. In Chinese outflows slowly transported over the Yellow Sea, PAN gradually increased up to 2.4 ppbv at night, in excellent correlation with a concentration increase in PM2.5 OC and EC, PM2.5 mass, and PM1.0 K+. The high K+ concentration and OC / EC ratio indicated that the air mass was impacted by biomass combustion. This study highlights PAN decoupling with O-3 in Chinese outflows and suggests PAN as a useful indicator for diagnosing continental outflows and assessing their perturbation of regional air quality in northeast Asia. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000409983100006 |
WOS关键词 | MARINE BOUNDARY-LAYER ; ORGANIC-CARBON ; PEROXYPROPIONYL NITRATE ; AIR-QUALITY ; ATMOSPHERIC CHEMISTRY ; INTEGRATED ANALYSIS ; REACTIVE NITROGEN ; ELEMENTAL CARBON ; ACETYL NITRATE ; RIVER DELTA |
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/30788 |
专题 | 地球科学 |
作者单位 | 1.Korea Univ, Dept Earth & Environm Sci, Seoul, South Korea; 2.Hankuk Univ Foreign Studies, Dept Environm Sci, Yongin, South Korea; 3.Natl Ctr Atmospher Res, Atmospher Chem Observat & Modeling Lab, POB 3000, Boulder, CO 80307 USA; 4.Korea Environm Inst, Sejong, South Korea |
推荐引用方式 GB/T 7714 | Han, Jihyun,Lee, Meehye,Shang, Xiaona,et al. Decoupling peroxyacetyl nitrate from ozone in Chinese outflows observed at Gosan Climate Observatory[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(17). |
APA | Han, Jihyun,Lee, Meehye,Shang, Xiaona,Lee, Gangwoong,&Emmons, Louisa K..(2017).Decoupling peroxyacetyl nitrate from ozone in Chinese outflows observed at Gosan Climate Observatory.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(17). |
MLA | Han, Jihyun,et al."Decoupling peroxyacetyl nitrate from ozone in Chinese outflows observed at Gosan Climate Observatory".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.17(2017). |
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