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Role of Chinese cooking emissions on ambient air quality and human health

journal contribution
posted on 2017-07-01, 00:00 authored by L Wang, Z Xiang, Svetlana StevanovicSvetlana Stevanovic, Z Ristovski, F Salimi, J Gao, H Wang, L Li
Chinese-style cooking often involves volatilization of oils which can potentially produce a large number of pollutants, which have adverse impact on environment and human health. Therefore, we have reviewed 75 published studies associated with research topic among Mainland China, Hong Kong and Taiwan, involving studies on the roles of food ingredients and oil type, cooking style impacting on generated pollutants, and human health. The highest concentration occurred including: 1) when peat, wood, and raw coal were used in stoves; 2) olive oil was adopted; 3) cooking with high temperatures; and 4) without cleaning technology. We conclude that PM concentrations for cooking emissions were between 0.14 and 24.46 mg/cm3. VOC concentrations varied from 0.35 to 3.41 mg/m3. Barbeque produced the greatest mass concentrations compared to Sichuan cuisine, canteen and other restaurants. The PAHs concentration emitted from the exhaust stacks, dining area and kitchen ranged from 0.0175 μg/m3to 83 μg/m3. The largest amount of gaseous pollutants emitted was recorded during incomplete combustion of fuel or when a low combustion efficiency (CO2/ (CO + CO2) < 0.5) was observed. The variation range was 6.27–228.89 mg/m3, 0.16–0.80 mg/m3, 0.69–4.33 mg/m3, 0.70–21.70 mg/m3for CO, CO2, NO2and SO2respectively. In regards to the toxicity and exposure, current findings concluded that both the dose and exposure time are significant factors to be considered. Scientific research in this area has been mainly driven by comparison among emissions from various ingredients and cooking techniques. There is still a need for more comprehensive studies to fully characterise the cooking emissions including their physical and chemical transformations which is crucial for accurate estimation of their impacts on the environment and human health.

History

Journal

Science of the total environment

Volume

589

Pagination

173-181

Location

Amsterdam, The Netherlands

ISSN

0048-9697

eISSN

1879-1026

Language

eng

Publication classification

C Journal article, C1.1 Refereed article in a scholarly journal

Copyright notice

2017, Elsevier B.V.

Publisher

Elsevier

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