Journal
JOURNAL OF ENVIRONMENTAL SCIENCES
Volume 84, Issue -, Pages 197-204Publisher
SCIENCE PRESS
DOI: 10.1016/j.jes.2019.04.029
Keywords
Marine main engine; Intermediate-volatility organic compounds; Heavy fuel oil; Emission factor; Chemical composition; Distribution
Categories
Funding
- National Natural Science Foundation of China [41403084, 4171101108]
- Shanghai Committee of Science and Technology [16ZR1414800]
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Intermediate volatility organic compounds (IVOCs) are crucial precursors of secondary organic aerosol (SOA). In this study, gaseous IVOCs emitted from a ship main engine burning heavy fuel oil (HFO) were investigated on a test bench, which could simulate the real-world operations and emissions of ocean-going ships. The chemical compositions, emission factors (EFs) and volatility distributions of IVOC emissions were investigated. The results showed that the main engine burning HFO emitted a large amount of IVOCs, with average IVOC EFs of 20.2-201 mg/kg-fuel. The IVOCs were mainly comprised of unspeciated compounds. The chemical compositions of exhaust IVOCs were different from that of HFO fuel, especially for polycyclic aromatic compounds and alkylcyclohexanes. The volatility distributions of IVOCs were also different between HFO exhausts and HFO fuel. The distinctions in IVOC emission characteristics between HFO exhausts and HFO fuel should be considered when assessing the IVOC emission and related SOA formation potentials from ocean-going ships burning HFO, especially when using fuel-surrogate models. (c) 2019 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
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