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Frontiers of Environmental Science & Engineering >> 2016, Volume 10, Issue 3 doi: 10.1007/s11783-016-0829-y

Chemical characteristics of fine particulate matter emitted from commercial cooking

1. School of Environmental Science and Engineering, Shanghai Jiao Tong University, Shanghai 200040, China.2. Shanghai Environmental Monitoring Center, Shanghai 200030, China.3. Ministry of Education Key Laboratory for Earth System Modeling, Center for Earth System Science, Tsinghua University, Beijing 100084, China.4. School of Environment, State Key Joint Laboratory of Environment Simulation and Pollution Control (SKLESPC), Tsinghua University, Beijing 100084, China

Accepted: 2016-01-25 Available online: 2016-04-05

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Abstract

The chemical characteristics of fine particulate matter (PM ) emitted from commercial cooking were explored in this study. Three typical commercial restaurants in Shanghai, i.e., a Shanghai-style one (SHS), a Sichuan-style one (SCS) and an Italian-style one (ITS), were selected to conduct PM sampling. Particulate organic matter (POM) was found to be the predominant contributor to cooking-related PM mass in all the tested restaurants, with a proportion of 69.1% to 77.1%. Specifically, 80 trace organic compounds were identified and quantified by gas chromatography/mass spectrometry (GC/MS), which accounted for 3.8%–6.5% of the total PM mass. Among the quantified organic compounds, unsaturated fatty acids had the highest concentration, followed by saturated fatty acids. Comparatively, the impacts of other kinds of organic compounds were much smaller. Oleic acid was the most abundant single species in both SCS and ITS. However, in the case of SHS, linoleic acid was the richest one. ITS produced a much larger mass fraction of most organic species in POM than the two Chinese cooking styles except for monosaccharide anhydrides and sterols. The results of this study could be utilized to explore the contribution of cooking emissions to PM pollution and to develop the emission inventory of PM from cooking, which could then help the policy-makers design efficient treatment measures and control strategies on cooking emissions in the future.

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