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Atmospheric Environment
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4.01
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Papers 23141
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#1Sathiyamurthi Ramasamy (National Institute for Environmental Studies)H-Index: 2
#2Tomoki Nakayama (Nagasaki University)H-Index: 16
Last.Kei Sato (National Institute for Environmental Studies)H-Index: 19
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Abstract To investigate the reaction mechanisms during the NO3- and O3-initiated aging of aromatic secondary organic aerosol (SOA), the gases and particles formed from the OH-initiated oxidation of toluene were exposed to NO3 radicals and O3 in a laboratory chamber. Hydroxyl radicals for the oxidation of toluene were produced under light conditions through H2O2 photolysis and dark conditions through tetramethylethylene ozonolysis. Aerodyne aerosol mass spectrometer results demonstrated an increa...
#2Scott Chambers (ANSTO: Australian Nuclear Science and Technology Organisation)H-Index: 16
Abstract Four years of observations in Central Poland are used to assess the ability of a recently-improved radon-based stability classification technique to investigate temporal variability in urban air quality (specifically NOx and CO). After isolating periods of greatest synoptic non-stationarity, observations were assigned (in whole 24-h blocks) to one of four atmospheric mixing categories. Wind speed more than doubled from the most stable to the most well mixed nocturnal conditions in non-w...
#1Xiao-Cui ChenH-Index: 5
#2Tony J. WardH-Index: 20
Last.Kin-Fai HoH-Index: 26
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Abstract Epidemiological studies provide evidence of the harmful effects of source-specific fine particulate matter (PM2.5) on human health. Studies regarding relative contributions of multiple sources to personal exposure are limited and inconsistent. Personal exposure monitoring for PM2.5 was conducted in 48 adult subjects (ages 18‒63 years) in Hong Kong between June 2014 and March 2015. We identified seven sources of personal PM2.5 exposure using Positive Matrix Factorization (PMF). These sou...
#1Robin Smit (UTS: University of Technology, Sydney)H-Index: 4
#2P. KingstonH-Index: 2
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Abstract Simultaneous day-time measurement (8 a.m.–5 p.m.) of on-road air quality and emissions (remote sensing) on an urban road with traffic volumes varying between approximately 400-800 vehicles per hour and an average speed of about 40 km/h has been used to compare multiple measurement techniques and assess on-road air quality. It was found that observed daytime concentration levels of CO, NOx, NO2, O3, PM10 and PM2.5 are below current WHO health based guideline values, varying from a few pe...
Abstract The intense western Canadian fires of August 2017 resulted in extreme, high-Arctic fine mode (FM) smoke AODs (aerosol optical depths) over a 2008 to 2017 (10-year) sampling period. The primary measurements employed to monitor smoke events were FM AODs derived from the measured AOD spectra of two AEROCAN/AERONET (CIMEL) sunphotometers at Eureka, Nunavut, Canada. The FM AOD attribution is argued to be a necessary condition for the presence of smoke. Various supporting information, includi...
#1Hua Zhou (JLU: Jilin University)
#2Hongwei Zhao (JLU: Jilin University)
Last.Taosheng Jin (NKU: Nankai University)H-Index: 6
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Abstract Vehicle emissions contribute to ambient particulate matter (PM) pollution directly via emissions of PM and indirectly by secondary aerosol formation, as a result of trace gas emissions. In this paper, we determined the emission factors of primary pollutants and estimated the secondary organic aerosol (SOA) formation potential of a China V heavy-duty diesel engine tested under ETC (European Transient Cycle) and ESC (European Stationary Cycle) and different types of fuels with an engine d...
#1Qingcai Chen (Shaanxi University of Science and Technology)H-Index: 8
#2Haoyao Sun (Shaanxi University of Science and Technology)H-Index: 2
Last.Lixin Zhang (Shaanxi University of Science and Technology)H-Index: 2
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Abstract Environmentally persistent free radicals (EPFRs) are new environmental health risk substances that have received much attention in recent years. The characterization of EPFRs is essential for understanding their sources and formation mechanisms in atmospheric particulate matter (PM), yet their physicochemical characteristics have not yet been fully and extensively studied. To clarify the nature of “persistent” free radicals in atmospheric PM, we systematically evaluated the decay charac...
#1Jie SongH-Index: 1
#2Yue LiuH-Index: 1
Last.Weidong WuH-Index: 3
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Abstract Air pollution is one of the most serious environmental crises globally. As concentrations of pollutants increase, respiratory illness and cardiovascular ailments become more prevalent. Few studies have analyzed the correlations between ambient nitrogen dioxide (NO2) pollution and eye and adnexa diseases (EADs). We investigated the short-term association between NO2 and outpatients with EADs in Xinxiang, China. Daily NO2 concentrations, meteorological and outpatients’ data from 2015 to 2...
#1Qin Guo (AIST: National Institute of Advanced Industrial Science and Technology)H-Index: 1
#2Liang Chen (AIST: National Institute of Advanced Industrial Science and Technology)H-Index: 11
Last.Junji Mizukado (AIST: National Institute of Advanced Industrial Science and Technology)H-Index: 8
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Abstract The products and mechanism for the OH-initiated reaction with the Cl-containing fluoroolefins Z/E-CF3CF=CHCl, CF3CF=CCl2, and CF2=CFCl were investigated, using a smog chamber linked to a Fourier-transform infrared spectrometer. That Cl atoms were generated from Cl-containing fluoroolefin reactions with OH radicals was proven, and significant acceleration was observed during the experiments. The corresponding Cl-initiated reaction products were identified as CF3CFClC(O)H for Z/E-CF3CF=CH...
#1Casey D. Bray (NCSU: North Carolina State University)H-Index: 2
#2William Battye (NCSU: North Carolina State University)H-Index: 6
Last.Viney P. Aneja (NCSU: North Carolina State University)H-Index: 35
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Abstract Agricultural residue burning in the Indo-Gangetic Plains (IGP) releases large amounts of reactive nitrogen, among other pollutants, into the atmosphere each year. This study focuses on rice paddy residue burning and wheat residue burning during October–November and April–May, respectively, in 2016 and 2017. Emissions of reactive nitrogen species (ammonia (NH3), nitrous oxide (N2O) and oxides of nitrogen (NOx = NO + NO2)) were estimated for the study period using a suite of satellite pro...
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