气候变化领域集成服务门户(CCPortal): Vehicle ammonia emissions measured in an urban environment in Sydney; Australia; using open path fourier transform infra-red spectroscopy

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DOI	10.3390/ATMOS10040208
	Vehicle ammonia emissions measured in an urban environment in Sydney; Australia; using open path fourier transform infra-red spectroscopy
	Phillips F.A.; Naylor T.; Forehead H.; Griffith D.W.T.; Kirkwood J.; Paton-Walsh C.
发表日期	2019
ISSN	20734433
卷号	10 期号:4
英文摘要	Airborne particulate matter (PM) is a major health risk in urban settings. Ammonia (NH3) from vehicle exhaust is an under-recognised ingredient in the formation of inorganic PM and there remains a shortage of data to properly quantify the role of NH3 from vehicles in PM formation. An Open-path Fourier transform infra-red (OP-FTIR) spectrometer measured atmospheric NH3, carbon monoxide (CO) and carbon dioxide (CO2) at high temporal resolution (5 min) in Western Sydney over 11 months. The oxides of nitrogen (NO2 and NO; NOx) and sulphur dioxide (SO2) were measured at an adjacent air quality monitoring station. NH3 levels were maxima in the morning and evening coincident with peak traffic. During peak traffic NH3:CO ratio ranged from 0.018 to 0.022 ppbv:ppbv. Results were compared with the Greater Metropolitan Region 2008 (GMR2008) emissions inventory. Measured NH3:CO was higher during peak traffic times than the GMR2008 emissions estimates, indicating an underestimation of vehicle NH3 emissions in the inventory. Measurements also indicated the urban atmosphere was NH3 rich for the formation of ammonium sulphate ((NH4)2SO4) particulate was SO2 limited while the formation of ammonium nitrate (NH4NO3) was NH3 limited. Any reduction in NOx emissions with improved catalytic converter efficiency will be accompanied by an increase in NH3 production and potentially with an increase in NH4NO3 particulate. by the authors.
英文关键词	Air quality; Ammonia; Carbon monoxide; CO; Emissions; NH3; Open path FTIR spectroscopy; Particulate matter; Urban; Vehicle
scopus关键词	Air quality; Carbon dioxide; Carbon monoxide; Cobalt; Fourier transform infrared spectroscopy; Health risks; Nitrogen oxides; Particles (particulate matter); Particulate emissions; Spectrometers; Sulfur dioxide; Vehicles; Air quality monitoring stations; Airborne particulate matters; Fourier transform infra reds; High temporal resolution; Open Path FTIR; Open-path Fourier transform infra-red spectroscopies; Particulate Matter; Urban; Ammonia; air quality; ammonia; carbon monoxide; emission inventory; formation mechanism; FTIR spectroscopy; traffic emission; urban atmosphere; Australia; New South Wales; Sydney [New South Wales]
来源期刊	Atmosphere
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/176516
作者单位	Centre for Atmospheric Chemistry, University ofWollongong, Wollongong, 2522, Australia; SMART, University ofWollongong, Wollongong, 2522, Australia; Office of Environment and Heritage, Government of NSW, Lidcombe, 2141, Australia
推荐引用方式 GB/T 7714	Phillips F.A.,Naylor T.,Forehead H.,et al. Vehicle ammonia emissions measured in an urban environment in Sydney; Australia; using open path fourier transform infra-red spectroscopy[J],2019,10(4).
APA	Phillips F.A.,Naylor T.,Forehead H.,Griffith D.W.T.,Kirkwood J.,&Paton-Walsh C..(2019).Vehicle ammonia emissions measured in an urban environment in Sydney; Australia; using open path fourier transform infra-red spectroscopy.Atmosphere,10(4).
MLA	Phillips F.A.,et al."Vehicle ammonia emissions measured in an urban environment in Sydney; Australia; using open path fourier transform infra-red spectroscopy".Atmosphere 10.4(2019).