Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.5194/acp-17-15121-2017 |
Evaluation of traffic exhaust contributions to ambient carbonaceous submicron particulate matter in an urban roadside environment in Hong Kong | |
Lee, Berto Paul1; Louie, Peter Kwok Keung2; Luk, Connie2; Chan, Chak Keung1 | |
2017-12-21 | |
发表期刊 | ATMOSPHERIC CHEMISTRY AND PHYSICS |
ISSN | 1680-7316 |
EISSN | 1680-7324 |
出版年 | 2017 |
卷号 | 17期号:24 |
文章类型 | Article |
语种 | 英语 |
国家 | Peoples R China |
英文摘要 | Road traffic has significant impacts on air quality particularly in densely urbanized and populated areas where vehicle emissions are a major local source of ambient particulate matter. Engine type (i.e., fuel use) significantly impacts the chemical characteristics of tailpipe emission, and thus the distribution of engine types in traffic impacts measured ambient concentrations. This study provides an estimation of the contribution of vehicles powered by different fuels (gasoline, diesel, LPG) to carbonaceous submicron aerosol mass (PM1) based on ambient aerosol mass spectrometer (AMS) and elemental carbon (EC) measurements and vehicle count data in an urban inner city environment in Hong Kong with the aim to gauge the importance of different engine types to particulate matter burdens in a typical urban street canyon. On an average per-vehicle basis, gasoline vehicles emitted 75 and 93% more organics than diesel and LPG vehicles, respectively, while EC emissions from diesel vehicles were 45% higher than those from gasoline vehicles. LPG vehicles showed no appreciable contributions to EC and thus overall represented a small contributor to traffic-related primary ambient PM1 despite their high abundance (similar to 30 %) in the traffic mix. Total carbonaceous particle mass contributions to ambient PM1 from diesel engines were only marginally higher (similar to 4 %) than those from gasoline engines, which is likely an effect of recently introduced control strategies targeted at commercial vehicles and buses. Overall, gasoline vehicles contributed 1.2 mu g m(-3) of EC and 1.1 mu m 3 of organics, LPG vehicles 0.6 mu g m(-3) of organics and diesel vehicles 2.0 mu g m(-3) of EC and 0.7 mu g m(-3) of organics to ambient carbonaceous PM1. |
领域 | 地球科学 |
收录类别 | SCI-E |
WOS记录号 | WOS:000418423900002 |
WOS关键词 | SECONDARY ORGANIC AEROSOL ; VEHICLE EMISSION FACTORS ; NEW-YORK-CITY ; HIGH-RESOLUTION ; CHEMICAL-COMPOSITION ; AIR-POLLUTION ; MASS-SPECTROMETER ; VOLATILITY MEASUREMENTS ; PARTICLE EMISSIONS ; GASOLINE VEHICLES |
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/22780 |
专题 | 地球科学 |
作者单位 | 1.City Univ Hong Kong, Sch Energy & Environm, Hong Kong, Hong Kong, Peoples R China; 2.HKSAR Govt, Environm Protect Dept, Wan Chai, Hong Kong, Peoples R China |
推荐引用方式 GB/T 7714 | Lee, Berto Paul,Louie, Peter Kwok Keung,Luk, Connie,et al. Evaluation of traffic exhaust contributions to ambient carbonaceous submicron particulate matter in an urban roadside environment in Hong Kong[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2017,17(24). |
APA | Lee, Berto Paul,Louie, Peter Kwok Keung,Luk, Connie,&Chan, Chak Keung.(2017).Evaluation of traffic exhaust contributions to ambient carbonaceous submicron particulate matter in an urban roadside environment in Hong Kong.ATMOSPHERIC CHEMISTRY AND PHYSICS,17(24). |
MLA | Lee, Berto Paul,et al."Evaluation of traffic exhaust contributions to ambient carbonaceous submicron particulate matter in an urban roadside environment in Hong Kong".ATMOSPHERIC CHEMISTRY AND PHYSICS 17.24(2017). |
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