Preliminary estimation of chemical compositions and emissions of particulate matters from domestic cooking in Beijing

Family cooking oil fume are becoming an important source of urban atmospheric fine particulate (PM2.5). In order to understand the characteristics and level of PM2.5 emission from family cooking fume. Mass concentration, chemical compositions and emission factors of PM2.5 emitted from family cooking fumes were studied based on in situ measurement, and the total amounts of PM2.5 emission from family cooking fumes in Beijing was preliminary estimated. Results showed that mass concentration of PM2.5 emitted from family cooking fumes ranged from 329.88±91.24 to 500.89±130.44 μg·m−3, the average mass concentration was 398.82±102.55 μg·m−3. Among all the measured chemical components of organic carbon (OC), water-soluble ions and element carbon (EC) account for about 51.34%-65.45%, 6.93%-14.78% and 0.73%-1.82%, respectively, other untested components account for about 19.44%-38.05%. According to the field investigation and actual measurement, the average PM2.5 emission factor was 210.57±54.15 mg·f·d−1 based on household number. Combined with the 2018 statistics annual report of Beijing, the total amounts of PM2.5 emission from family cooking oil fumes in Beijing was estimated to be 553.38±142.31 t·a−1 in 2018. The emission amounts has certain uncertainty, the following work should be carried out to measure the PM2.5 emission from family cooking oil fumes in different administrative regions.