Towards a quantitative understanding of total OH reactivity: A review

doi:10.1016/j.atmosenv.2016.03.010

CORC > 北京大学 > 环境科学与工程学院

	Towards a quantitative understanding of total OH reactivity: A review
	Yang, Yudong ; Shao, Min ; Wang, Xuemei ; Noelscher, Anke C. ; Kessel, Stephan ; Guenther, Alex ; Williams, Jonathan
刊名	ATMOSPHERIC ENVIRONMENT
	2016
关键词	OH reactivity VOCs Missing reactivity VOLATILE ORGANIC-COMPOUNDS INDUCED FLUORESCENCE INSTRUMENT MASTER CHEMICAL MECHANISM OZONE PRODUCTION-RATES AMAZON RAIN-FOREST LASER-INDUCED PUMP NEW-YORK-CITY MCM V3 PART AEROSOL FORMATION BOREAL FOREST
DOI	10.1016/j.atmosenv.2016.03.010
英文摘要	Over the past fifty years, considerable efforts have been devoted to measuring the concentration and chemical speciation of volatile organic compounds (VOCs) in ambient air and emissions. Recently, it has become possible to directly determine the overall effect of atmospheric trace gases on the oxidant hydroxyl radicals (OH), by measuring OH reactivity (OH loss frequency). Quantifying total OH reactivity is one way to characterize the roles of VOCs in formation of ground-level ozone and secondary organic aerosols (SOA). Approaches for measuring total OH reactivity in both emissions and ambient air have been progressing and have been applied in a wide range of studies. Here we evaluate the main techniques used to measure OH reactivity, including two methods directly measuring OH decay and one comparative reactivity method (CRM), and summarize the existing experimental and modeling studies. Total OH reactivity varies significantly on spatial, diurnal, seasonal and vertical bates. Comparison with individually detected OH sinks often reveals a significant missing reactivity, ranging from 20% to over 80% in some environments. Missing reactivity has also been determined in most source emission studies. These source measurements, as well as numerical models, have indicated that both undetected primary emissions and unmeasured secondary products could contribute to missing reactivity. A quantitative understanding of total OH reactivity of various sources and ambient environments will enhance our understanding of the suite of compounds found in emissions as well as chemical processes, and will also provide an opportunity for the improvement of atmospheric chemical mechanisms. (C) 2016 Published by Elsevier Ltd.; Natural Science Foundation for Outstanding young Scholars [41125018]; Natural Science Foundation key project [411330635]; European Commission Partnership with China on Space Data (PANDA project); SCI(E); EI; REVIEW; mshao@pku.edu.cn; 147-161; 134
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/437205]
专题	环境科学与工程学院
推荐引用方式 GB/T 7714	Yang, Yudong,Shao, Min,Wang, Xuemei,et al. Towards a quantitative understanding of total OH reactivity: A review[J]. ATMOSPHERIC ENVIRONMENT,2016.
APA	Yang, Yudong.,Shao, Min.,Wang, Xuemei.,Noelscher, Anke C..,Kessel, Stephan.,...&Williams, Jonathan.(2016).Towards a quantitative understanding of total OH reactivity: A review.ATMOSPHERIC ENVIRONMENT.
MLA	Yang, Yudong,et al."Towards a quantitative understanding of total OH reactivity: A review".ATMOSPHERIC ENVIRONMENT (2016).