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http://dx.doi.org/10.11629/jpaar.2020.16.1.019

Validation for SOC Estimation from OC and EC concentration in PM2.5 measured at Seoul  

Yoo, Ha Young (Department of Environmental Science & Engineering, Ewha Womans University)
Kim, Ki Ae (Department of Environmental Science & Engineering, Ewha Womans University)
Kim, Yong Pyo (Department of Chemical Engineering & Materials Science, Ewha Womans University)
Jung, Chang Hoon (Department of Health Management, Kyungin Women's University)
Shin, Hye Jung (Department of Air Quality Research, Climate and Air Quality Research Division, National Institute of Environmental Research)
Moon, Kwang Ju (Department of Air Quality Research, Climate and Air Quality Research Division, National Institute of Environmental Research)
Park, Seung Myung (Department of Air Quality Research, Climate and Air Quality Research Division, National Institute of Environmental Research)
Lee, Ji Yi (Department of Environmental Science & Engineering, Ewha Womans University)
Publication Information
Particle and aerosol research / v.16, no.1, 2020 , pp. 19-30 More about this Journal
Abstract
The organic carbon in the ambient particulate matter (PM) is divided into primary organic carbon (POC) and secondary organic carbon (SOC) by their formation way. To regulate PM effectively, the estimation of the amount of POC and SOC separately is one of important consideration. Since SOC cannot be measured directly, previous studies have evaluated determination of SOC by the EC tracer method. The EC tracer method is a method of estimating the SOC value from calculating the POC by determining (OC/EC)pri which is the ratio of the measured values of OC and EC from the primary combustion source. In this study, three different ways were applied to OC and EC concentrations in PM2.5 measured at Seoul for determining (OC/EC)pri: 1) the minimum value of OC/EC ratio during the measurement period; 2) regression analysis of OC vs. EC to select the lower 5-20% OC/EC ratio; 3) determining the OC/EC ratio which has lowest correlation coefficient value (R2) between EC and SOC which is reported as minimum R squared method (MRS). Each (OC/EC)pri ratio of three ways are 0.35, 1.22, and 1.77, respectively from the 1 hourly data. We compared the (OC/EC)pri ratio from 1hourly data with 24 hourly data and revealed that (OC/EC)pri estimated from 24 hourly data had twice larger than 1hourly data due to the low time resolution of sampling. We finally confirmed that the most appropriate value of (OC/EC)pri is that calculated by a regression analysis of 1 hourly data and estimated SOC amounts at PM2.5 of the Seoul atmosphere.
Keywords
$PM_{2.5}$; OC/EC ratio of primary emission; Primary organic carbon (POC); Secondary organic carbon (SOC); EC tracer method;
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1 Gray, H.A., Cass, G.R., Huntzicker, J.J., Heyerdahl, E.K., and Rau, J.A. (1986). Characteristics of atmospheric organic and elemental carbon particle concentrations in Las Angeles, Environmental Science and Technology, 20, 580-589.   DOI
2 Han, Y.M., Han, Z.W., Cao, J.J., Chow, J.C., Watson, J.G., An, Z.S., Liu, S.X., and Zhang, R.J. (2008). Distribution and origin of carbonaceous aerosol over a rural high-mountain lake area, Northern China and its transport significance, Atmospheric Environment, 42, 2405-2414.   DOI
3 He, L.Y., Hu, M., Zhang, Y.H., Huang, X.F., and Yao, T.T. (2008). Fine particle emissions from on-road vehicles in the Zhujiang tunnel, China, Environmental Science and Technology, 42, 4461-4466.   DOI
4 Hildemann, L.M., Markowski, G.R., and Cass, G.R. (1991). Chemical composition of emissions from urban sources of fine organic aerosol, Environmental Science and Technology, 27, 744-759.   DOI
5 Jeon, H., Park, J., Kim, H., Sung, M., Choi, J., Hong, Y., and Hong, J. (2015). The characteristics of PM2.5 concentration and chemical composition of Seoul metropolitan and inflow background area in Korea peninsula, Journal of the Korean Society of Urban Environment, 15(3), 261-271.
6 Kim, Y., Seo, J., Kim, J.Y., Lee, J.Y., Kim, H., and Kim, B.M. (2018). Characterization of PM2.5 and identification of transported secondary and biomass burning contribution in Seoul, Korea, Environmental Science and Pollution Research, 25, 4330-4343.   DOI
7 Larson, S.M., Cass, R.G., and Gray, H.A. (1989). Atmospheric carbon particles and the Los Angeles visibility problem, Journal of Environmental Science and Health, 28, 1565-1579.
8 Wu, C., and Yu, J.Z. (2016). Determination of primary combustion source organic carbon-to-elemental carbon (OC/EC) ratio using ambient OC and EC measurements: secondary OC-EC correlation minimization method, Atmospheric Chemistry and Physics, 16, 5453-5465.   DOI
9 Lin, P., Hu, M., Deng, Z., Slanina, J., Han, S., Kondo, Y., Takegawa, N., Miyazaki, Y., Zhao, Y., and Sugimoto, N. (2009). Seasonal and diurnal variations of organic carbon in PM2.5 in Beijing and the estimation of secondary organic carbon, Journal of Geophysical Research, 114, D00G11.   DOI
10 Lim, H.J., and Turpin, B.J. (2002). Origins of primary and secondary organic aerosol in Atlanta: Results of time-resolved measurements during the Atlanta supersite experiment, Environmental Science and Technology, 36(21), 4489-4496.   DOI
11 Millet, D.B., Donahue, N.M., Pandis, S.N., Polidori, A., Stanier, C.O., Turpin, B.J., and Goldstein, A.H. (2005). Atmospheric volatile organic compound measurements during the Pittsburgh Air Quality Study: Results, interpretation, and quantification of primary and secondary contributions, Journal of Geophysical Research: Atmospheres, 110, D07S07.   DOI
12 NIER (National Institute of Environmental Research) (2011). A Study on Concentration Characteristics and Secondary Production of Fine Particulate Matters (PM2.5), 242-244.
13 NIER (National Institute of Environmental Research) (2012). 2011 Annual Report of Intensive Monitoring Station, NIER-GP2012-310.
14 Odum, J.R., Jungkamp, T.P.W., Griffin, R.J., Flagan, R.C., and Seinfeld, J.H. (1997). The atmospheric aerosol-forming potential of whole gasoline vapor, Science, 276, 96-99.   DOI
15 Strader, R., Lurmann, F., and Pandis, S.N. (1999). Evaluation of secondary organic aerosol formation in winter, Atmospheric Environment, 33(29), 4849-4863.   DOI
16 Turpin, B.J., and Huntzicker, J.J. (1995). Identification of secondary organic aerosol episodes and quantification of primary and secondary organic aerosol concentration during SCAQS, Atmospheric Environment, 29, 3527-3544.   DOI
17 Chu, L.C., and Macias, E.S. (1981). Carbonaceous urban aerosol primary or secondary? in Atmospheric aerosol: source air quality relationships, American Chemical Society, Washington, D. C, pp.251-268.
18 Bowman, F., Odum, J., Pandis, S.N., and Seinfeld, J.H. (1997). Mathematical model for gas-particle partitioning of secondary organic aerosols, Atmospheric Environment, 31, 3921-3931.   DOI
19 Castro, L.M., Pio, C.A., Harrison, R.M, and Smith, D.J.T. (1999). Carbonaceous aerosol in urban and rural European atmospheres: Estimation of secondary organic carbon concentrations, Atmospheric Environment, 33(17), 2771-2781.   DOI
20 Choi, J.K., Heo, J.B., Ban, S.J., Yi, S.M., and Zoh, K.D. (2012). Chemical characteristics of PM2.5 aerosol in Incheon, Korea, Atmospheric Environment, 60, 583-592.   DOI
21 Gray H. A. (1986). Control of atmospheric fine primary carbon particle concentrations, EQL Report, 23, 103-108.
22 Zhang, Y., Schauer, J.J., Zhang, Y., Zeng, L., Wei, Y., Liu, Y., and Shao, M. Characteristics of particulate carbon emissions from real-world Chinese coal combustion, Environmental Science and Technology, 42(14), 5068-5073.   DOI
23 Turpin, B.J., and Huntzicker, J.J. (1991). Secondary formation of organic aerosol in the Los Angeles basin: a descriptive analysis of organic and elemental carbon concentrations, Atmospheric Environment, 25A, 207-215.   DOI
24 Wolff, G.T., Groblicki, P.J., Cadle, S.H., and Countess, R.J. (1982). Particulate carbon at various locations in the United States, Particulate Carbon: Atmospheric Life Cycle, Plenum, New York, NY, pp.297-315.
25 Wu, C., Wu, D., and Yu, J. Z. (2019). Estimation and uncertainty analysis of secondary organic carbon using 1 year of hourly organic and elemental carbon data, Journal of Geophysical Research: Atmospheres, 124, 2774-2795.   DOI
26 NIER (National Institute of Environmental Research) (2017). Case Study of High PM Episodes Observed in Intensive Monitoring Station (2016).