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Speciated PM Composition and Gas and Particle Emission Factors for Diesel Construction Machinery in China

Category: Air Pollution and Health Effects

Accepted Manuscripts
DOI: 10.4209/aaqr.2018.07.0272
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Qingyao Hu1, Cheng Huang 1, Liping Qiao1, Yingge Ma1, Qiang Yang2, Wei Tang2, Min Zhou1, Shuhui Zhu1, Shengrong Lou1, Shikang Tao1, Yun Chen3, Li Li 1

  • 1 State Environmental Protection Key Laboratory of Cause and Prevention of Urban Air Pollution Complex, Shanghai Academy of Environmental Sciences, Shanghai 200233, China
  • 2 Hangzhou Institute of Environment Sciences, Hangzhou 310014, China
  • 3 Hangzhou Motor Vehicle Exhaust Pollution Management Office, Hangzhou 310014, China

Abstract

On-board emissions measurements were performed on nine diesel construction machines operated under real-world conditions in China. Emission factors (EFs) for NOx, CO, total hydrocarbons, PM, and particulate number were determined under actual operating conditions, including idling, moving, and working. To investigate the chemical composition of PM from diesel machinery, organic carbon (OC) which contain particulate organic matter (POM) , elemental carbon (EC), water soluble ions (WSIs), elements, were also analyzed herein. OC was the most abundant component (contributing 39.3 ± 11% of mass), followed by EC (37.7 ± 13%). POM species, including n-alkanes, hopanes, polycyclic aromatic hydrocarbons (PAHs), and n-fatty acids, contributed approximately 2.4-6.4% of the total PM mass. Compounds with 3 or 4 aromatic rings, including pyrene, phenanthrene, and fluoranthene, dominated the particulate PAHs, accounting for 62% of the total mass. The results are consistent with previous studies, and these data can help to minimize uncertainty in emission inventories and source apportionment work for non-road machinery.

Keywords

Non-road machinery Emission factors PM components PAH emissions Diesel emissions


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