AAAR 37th Annual Conference October 14 - October 18, 2019 Oregon Convention Center Portland, Oregon, USA
Abstract View
The Impact of Cooking Pan Material on Ultrafine Particle Emission Rates
MEHDI AMOUEI TORKMAHALLEH, Hamed Sharifi, Maryam Dareini, Giorgio Buonanno, Chemical and Aerosol Research Team, Nazarbayev University
Abstract Number: 822 Working Group: Indoor Aerosols
Abstract Previous studies demonstrated that cooking is one of the major sources of indoor UFPs. It is important to focus on different cooking components to identify the most influential source which controls the overall cooking UFP emissions. This identification may then create opportunities to reduce cooking emission. Oil, meat, stove and pan are among the key sources contributing to cooking PM. It was found in the literature that desorption of semivolatile organic compounds (SVOCs) from the heated metal surfaces including pans and burners contributes to UFP emissions. Thus, the material coated on the surface of the pans may impact the amount of surface deposited SVOCs, and therefore the UFP emission rate. Among different cooking components, the emission rate of UFP generated from a heated cooking pan itself has not been yet investigated. The aim of this study is to examine the impact of type of cooking pans including Teflon, aluminum, ceramic and granitium pans on UFP emission rates under controlled experimental conditions. The four pans were exposed to indoor air under the same conditions for 24, 48, 96 and 144 hours and then were heated for 10 minutes while the temperature of the pan was recorded. After the 10 minutes heating, the pan was removed from the experimental chamber to start the particle decay period. Furthermore, this study investigates the relationship between the pan exposure time to indoor air prior to heating and the UFP emission rates during the heating. Total particle number emission rates from heated pans are estimated using an Aerasense (Netherlands) NanoTracer capable of quantifying particle number concentration up to 106 particles/cm3 for UFPs down to 10 nm While the experiments are being conducted, the primary results showed that after 24 hour exposure to indoor air of a kitchen, Ceramic and Teflon pans produced 3.6×1013 and 1.29×1012 particles/h, respectively. When Ceramic pan was exposure to indoor air for 96 hours no significant changed was observe in UFP emissions rate (2.65×1013 particles/h) while it increased to 1.4×1014 particles/h for 144 hour exposure time. More results will be presented during the AAAR 37th annual conference.