Characteristics of non-methane hydrocarbons and benzene series emission from commonly cooking oil fumes

Abstract

Cooking oil fumes is an important source of VOCs pollution in urban area in China. The research of the emission characteristics of NMHC and benzene series which are the representative substances of VOCs in cooking oil fumes was very little. In this study, three kind of most commonly used edible oils (soybean oil, peanut oil and blend oil) were used to generate cooking oil fumes. The concentrations of NMHC and benzene series in cooking oil fumes were detected by GC and GC-MS, and were used to calculate the emission factors of these. The concentration of NMHC in soybean oil was significantly higher than that of the other two edible oils so the emission factors were higher than others. The emission polynomials of NMHC and benzene series were obtained by fitting the emission factors. The NMHC emission polynomials are binomial equation and the benzene series emission polynomials are best for trinomial. The emission polynomials of VOCs in cooking oil fumes can not only conveniently and quickly calculate the emissions of the substances but also provide a data basis for subsequent processing.