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Emissions of Polychlorinated Dibenzo-p-dioxin and Polychlorinated Dibenzofuran from Motorcycles

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Volume: 10 | Issue: 6 | Pages: 533-539
DOI: 10.4209/aaqr.2010.04.0029
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Shiunn-Cheng Chuang1, Shui-Jen Chen 1, Kuo-Lin Huang1, Guo-Ping Chang-Chien2, Lin-Chi Wang2, Yi-Chu Huang1

  • 1 Department of Environmental Science and Engineering, National Pingtung University of Science and Technology, 1 Shieh-Fu Rd., Nei Pu 91207, Pingtung, Taiwan
  • 2 Department of Chemical and Materials Engineering, and Super Micro Mass Research & Technology Center, Cheng Shiu University, Kaohsiung County 833, Taiwan

Abstract

This study presents the first investigation of polychlorinated dibenzo-p-dioxin and polychlorinated dibenzofuran (PCDD/F) emission from (six 2-stroke and six 4-stroke engine) motorcycles using chassis dynamometer tests. Effects of engine type and lubricant renewal on PCDD/F emission were also evaluated. The mean total PCDD/F emission concentration of tested motorcycles was 1.06 ng/Nm3, with a corresponding mean total PCDD/F I-TEQ of 0.0671 ng I-TEQ/Nm3. The mean PCDD/F emission concentration of 2-stroke engine motorcycles (1.17 ng/Nm3, 0.0727 ng I-TEQ/Nm3) was more than that (0.912 ng/Nm3, 0.0534 ng I-TEQ/Nm3) of 4-stroke engine motorcycles. The PCDD/F emission factors of motorcycles were comparable to those of some types of vehicles, although the tested motorcycles equipped with cylinders much smaller than those of vehicles. The dominant PCDD/F congeners of 2-stroke and 4-stroke motorcycles in emission priority were OCDD, OCDF, 1,2,3,4,6,7,8-HpCDD, and 1,2,3,4,6,7,8-HpCDF, accounting for 37%, 15%, 10% and 9% of the total PCDD/F emission, respectively. The reductions of PCDD/F and I-TEQ emissions after lubricant renewal of the 4-stroke motorcycles were 26%–45% and 41%–63%, respectively.

Keywords

PCDD/F Motorcycle Lubricant


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