Chemical Compositions of PM Emitted from Diesel Trucks and Construction Equipment
Aerosol Science and Engineering, ISSN: 2510-3768, Vol: 2, Issue: 2, Page: 51-60
2018
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- 29Captures
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Article Description
This study reported the chemical compositions of PM for seven kinds of China IV diesel trucks and three kinds of stage II construction equipment. Filter samples were directly collected at the tailpipe with a dilution system. Twenty elements (Al, Si, K, Ca, Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, As, Cd, Sn, Sb, Ba and Pb), water-soluble ions (WSIs) including NH, K, Ca, Cl, NO and SO, and carbonaceous species were analyzed and characterized. The uncertainties of these species were also estimated. Overall, the highest proportion of PM was contributed by carbonaceous matter (OC and EC), accounting for 46.4 and 38.5% for trucks and construction equipment, respectively. The EC/OC ratios were higher than 1, with lowest in light-duty diesel trucks (LDDTs) as 1.4 ± 0.2 and highest in excavators as 5.1 ± 0.3. Similarities and differences were compared among source profiles using the residual (R)/uncertainty (U) ratios. Also Pearson’s correlation coefficients among the chemical compositions were analyzed to determine the relationships between the various chemical components. In addition, the source profiles of diesel trucks and construction equipment in our study were compared with those reported by other studies in recent years from China. Variations were observed in the results due to uncontrolled factors such as operating conditions, fuel quality and sampling measurements. To assess these uncertainties, better knowledge of local source profiles and more elaborate measurements are needed for future research.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85058676792&origin=inward; http://dx.doi.org/10.1007/s41810-017-0020-2; http://link.springer.com/10.1007/s41810-017-0020-2; http://link.springer.com/content/pdf/10.1007/s41810-017-0020-2.pdf; http://link.springer.com/article/10.1007/s41810-017-0020-2/fulltext.html; https://dx.doi.org/10.1007/s41810-017-0020-2; https://link.springer.com/article/10.1007/s41810-017-0020-2
Springer Nature
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