AAAR 35th Annual Conference October 17 - October 21, 2016 Oregon Convention Center Portland, Oregon, USA
Abstract View
A Study on Potential SOA Mass Fraction from Vehicle Emission using HR-ToF-AMS Coupled with Potential Aerosol Mass Reactor
GYUTAE PARK, Jihwan Son, Jounghwa Kim, Jeong Soo Kim, Sunmoon Kim, Taehyun Park, Pilho Kim, Seokwon Kang, Kyunghoon Kim, Jihee Ban, Kijae Sung, Ho-Jin Lim, Zaeem Bin Babar, Taehyoung Lee, Hankuk University of Foreign Studies
Abstract Number: 680 Working Group: Aerosol Chemistry
Abstract Recent research proposed that Secondary Organic Aerosol(SOA) is important class of predicting future climate change scenarios(Monks et al., 2009; Hallquist et al., 2009). However, there has been lack of studies to investigate SOA formation all over the world. This study tried to focus on understanding potential mass fraction and degree of oxygenated organic aerosol between primary and secondary organic aerosol by chassis dynamometer for in-use vehicle. The test driving cycle was NIER09; developed in real driving pattern in urban area for reproducing on the chassis dynamometer. Also in order to confirm variation in chemical composition by vehicle speed, constant mode(30, 70, 110km/h) was conducted for each 10 minutes. To generate condition of Potential SOA formation, we used Potential Aerosol Mass (hereafter referred to as “PAM”) reactor that manufactured by Kyungpook National University. PAM could make a highly oxidizing environment that simulates oxidation processes on timescales of 6-10 hrs in the atmosphere in minutes in real time. Chemical composition of aerosol from vehicle emission and through PAM was measured by the High Resolution-Time of Flight-Aerosol Mass Spectrometer(HR-TOF-AMS, hereafter referred to as “AMS”). The AMS provides non-refractory aerosol mass concentrations including nitrate, sulfate, hydrocarbon-like and oxygenated organic aerosol in real time. As a result, it was revealed that gasoline and LPG vehicle relatively made more potential SOA than diesel vehicle. However, this study is limited for testing group so that additional study needs to acquire testing data for various size vehicles.