Effect of Biomass Burning,Diwali Fireworks,and Polluted Fog Events on the Oxidative Potential of Fine Ambient Particulate Matter in Delhi,India

Joseph V.Puthussery; Jay Dave; Ashutosh Shukla

首页> 外文期刊>Environmental Science & Technology: ES&T >Effect of Biomass Burning,Diwali Fireworks,and Polluted Fog Events on the Oxidative Potential of Fine Ambient Particulate Matter in Delhi,India

【24h】

Effect of Biomass Burning,Diwali Fireworks,and Polluted Fog Events on the Oxidative Potential of Fine Ambient Particulate Matter in Delhi,India

机译：Effect of Biomass Burning,Diwali Fireworks,and Polluted Fog Events on the Oxidative Potential of Fine Ambient Particulate Matter in Delhi,India

获取原文

获取原文并翻译 | 示例

掌桥外文数据库（机构版） >>

开具论文收录证明 >>

文献代查 >>

页面导航

摘要
著录项
相关主题

摘要

We investigated the influence of biomass burning(BURN),Diwali fireworks,and fog events on the ambient fine particulate matter(PM_(2.5))oxidative potential(OP)during the postmonsoon(PMON)and winter season in Delhi,India.The real-time hourly averaged OP(based on a dithiothreitol assay)and PM_(2.5)chemical composition were measured intermittently from October 2019 to January 2020.The peak extrinsic OP(OPv:normalized by the volume of air)was observed during the winter fog(WFOG)(5.23 ± 4.6 nmol·min·m~(-3)),whereas the intrinsic OP(OPm; normalized by the PM_(2.5)mass)was the highest during the Diwali firework-influenced period(29.4 ± 18.48 pmol·min~(-1)·μg~(-1)).Source apportionment analysis using positive matrix factorization revealed that traffic + resuspended dust-related emissions(39%)and secondary sulfate + oxidized organic aerosols(38%)were driving the OPv during the PMON period,whereas BURN aerosols dominated(37%)the OPv during the WFOG period.Firework-related emissions became a significant contributor(~32%)to the OPv during the Diwali period(4 day period from October 26 to 29),and its contribution peaked(72%)on the night of Diwali.Discerning the influence of seasonal and episodic sources on health-relevant properties of PM_(2.5),such as OP,could help better understand the causal relationships between PM_(2.5)and health effects in India.

著录项

来源
《Environmental Science & Technology: ES&T》 |2022年第20期|14605-14616|共12页
作者
Joseph V.Puthussery; Jay Dave; Ashutosh Shukla;
展开▼
作者单位

Department of Civil and Environmental Engineering,University of Illinois at Urbana Champaign,Urbana,Illinois 61801,United States;

Geosciences Division,Physical Research Laboratory,Ahmedabad 380009,India;

Department of Chemistry,University oj Saskatchewan,Saskatoon,Saskatchewan S7NSC9,Canada;

Department of Civil Engineering Indian Institute of Technology Kanpur,Kanpur 208016,India;

展开▼
收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
原文格式 PDF
正文语种英语
中图分类环境科学、安全科学;
关键词
megacity; source apportionment; reactive oxygen species; health effects; haze;

Effect of Biomass Burning,Diwali Fireworks,and Polluted Fog Events on the Oxidative Potential of Fine Ambient Particulate Matter in Delhi,India

摘要

著录项

相关主题

期刊订阅