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Int J Environ Res Public Health

Title:		Detailed Speciation of Semi-Volatile and Intermediate-Volatility Organic Compounds (S/IVOCs) in Marine Fuel Oils Using GC x GC-MS
Author(s):		Tang R; Song K; Gong Y; Sheng D; Zhang Y; Li A; Yan S; Yan S; Zhang J; Tan Y; Guo S;
Address:		"School of Energy and Environment, City University of Hong Kong, Kowloon 999077, Hong Kong, China. Shenzhen Research Institute, City University of Hong Kong, Shenzhen 518057, China. School of Environment and Materials Engineering, Yantai University, Yantai 264003, China. State Key Joint Laboratory of Environmental Simulation and Pollution Control, International Joint Laboratory for Regional Pollution Control, Ministry of Education (IJRC), College of Environmental Sciences and Engineering, Beijing 100871, China. China Automotive Technology and Research Center (CATARC), Beijing 100176, China. Department of Investigation Shanghai Police College, Shanghai 200137, China. School of Chemical Engineering and Technology, Sun Yat-sen University, Zhuhai 519082, China"
Journal Title:		Int J Environ Res Public Health
Year:		2023
Volume:		20230131
Issue:		3
Page Number:		-
DOI:		10.3390/ijerph20032508
ISSN/ISBN:		1660-4601 (Electronic) 1661-7827 (Print) 1660-4601 (Linking)
Abstract:		"Ship emissions contribute substantial air pollutants when at berth. However, the complexity and diversity of the marine fuels utilized hinder our understanding and mapping of the characteristics of ship emissions. Herein, we applied GC x GC-MS to analyze the components of marine fuel oils. Owing to the high separation capacity of GC x GC-MS, 11 classes of organic compounds, including b-alkanes, alkenes, and cyclo-alkanes, which can hardly be resolved by traditional one-dimensional GC-MS, were detected. Significant differences are observed between light (-10# and 0#) and heavy (120# and 180#) fuels. Notably, -10# and 0# diesel fuels are more abundant in b-alkanes (44~49%), while in 120# and 180#, heavy fuels b-alkanes only account for 8%. Significant enhancement of naphthalene proportions is observed in heavy fuels (20%) compared to diesel fuels (2~3%). Hopanes are detected in all marine fuels and are especially abundant in heavy marine fuels. The volatility bins, one-dimensional volatility-based set (VBS), and two-dimensional VBS (volatility-polarity distributions) of marine fuel oils are investigated. Although IVOCs still take dominance (62-66%), the proportion of SVOCs in heavy marine fuels is largely enhanced, accounting for ~30% compared to 6~12% in diesel fuels. Furthermore, the SVOC/IVOC ratio could be applied to distinguish light and heavy marine fuel oils. The SVOC/IVOC ratios for -10# diesel fuel, 0# diesel fuel, 120# heavy marine fuel, and 180# heavy marine fuel are 0.085 +/- 0.046, 0.168 +/- 0.159, 0.504, and 0.439 +/- 0.021, respectively. Our work provides detailed information on marine fuel compositions and could be further implemented in estimating organic emissions and secondary organic aerosol (SOA) formation from marine fuel storage and evaporation processes"
Keywords:		Gasoline/analysis *Volatile Organic Compounds/analysis Vehicle Emissions/analysis *Fuel Oils Gas Chromatography-Mass Spectrometry *Air Pollutants/analysis Aerosols/analysis Alkanes comprehensive two-dimensional gas chromatography (GC x GC) intermediate-vo;
Notes:		"MedlineTang, Rongzhi Song, Kai Gong, Yuanzheng Sheng, Dezun Zhang, Yuan Li, Ang Yan, Shuyuan Yan, Shichao Zhang, Jingshun Tan, Yu Guo, Song eng Research Support, Non-U.S. Gov't Switzerland 2023/02/12 Int J Environ Res Public Health. 2023 Jan 31; 20(3):2508. doi: 10.3390/ijerph20032508"