- 期刊
- OpenAccess
Characterization of Atmospheric Organic and Elemental Carbon of PM(subscript 2.5) in a Typical Semi-Arid Area of Northeastern China
並列摘要
In the spring of 2006, daily particulate matter (PM(subscript 2.5)) aerosol samples were collected in Tongyu, a semi-arid area in northeastern China. The concentrations of organic carbon (OC) and elemental carbon (EC) were determined with a thermal/optical carbon analyzer in the filter samples. The average concentrations of OC and EC in PM(subscript 2.5) were 14.1 ± 8.7 and 2.0 ± 1.3 μg/m^3, respectively. A good correlation between OC and EC was observed during the spring season, suggesting that they might be derived from similar sources. The correlation between OC and K+ was high (R = 0.74), and the K(superscript +)/OC ratio, as determined from their linear regression slope, reached 2.57. The good correlation and high K(superscript +)/OC ratio indicated that biomass-burning was probably one of the major sources of OC in this region. The concentrations of estimated secondary organic carbon (SOC) in PM(subscript 2.5) in Tongyu ranged from below the detection limit to 26.1 μg/m^3 (mean, 5.9 μg/m^3). The percentages of SOC in OC and in PM(subscript 2.5) mass were 42.0% and 2.1%, respectively. The SOC concentrations during dust storm (DS) periods were higher than those during non-dust storm (NDS) ones, suggesting that chemical reaction processes involving gas-particle conversion occurred during the long-distance transport of aerosol particles.
被引用紀錄
延伸閱讀
- Yu, Y., & Cao, J. (2023). Chemical Fingerprints and Source Profiles of PM_(10) and PM_(2.5) from Agricultural Soil in a Typical Polluted Region of Northwest China. Aerosol and Air Quality Research, 23(6), 1-12+ap22. https://doi.org/10.4209/aaqr.220419
- Shen, Z. X., Wang, X., Zhang, R. J., Ho, K. F., Cao, J. J., & Zhang, M. G. (2011). Chemical Composition of Water-soluble Ions and Carbonate Estimation in Spring Aerosol at a Semi-arid Site of Tongyu, China. Aerosol and Air Quality Research, 11(4), 360-368. https://www.airitilibrary.com/Article/Detail?DocID=16808584-201108-201108170007-201108170007-360-368
- Xing, Z., Deng, J., Mu, C., Wang, Y., & Du, K. (2014). Seasonal Variation of Mass Absorption Efficiency of Elemental Carbon in the Four Major Emission Areas in China. Aerosol and Air Quality Research, 14(7), 1897-1905(i-xi). https://www.airitilibrary.com/Article/Detail?DocID=16808584-201412-201501060001-201501060001-1897-1905(i-xi)
- Liu, B., Sun, X., Zhang, J., Bi, X., Li, Y., Li, L., Dong, H., Xiao, Z., Zhang, Y., & Feng, Y. (2020). Characterization and Spatial Source Apportionments of Ambient PM_(10) and PM_(2.5) during the Heating Period in Tian'jin, China. Aerosol and Air Quality Research, 20(1), 1-13+ap1-26. https://doi.org/10.4209/aaqr.2019.06.0281
- Peng, X., Hao, Q., Wen, T., Ji, D., Liu, Z., Wang, Y., He, X., Li, X., & Jiang, C. (2018). Characteristics of Organic Carbon and Elemental Carbon in Atmospheric Aerosols in the Urban Area in Beibei, a Suburb of Chongqing. Aerosol and Air Quality Research, 18(11), 2764-2774. https://doi.org/10.4209/aaqr.2017.11.0450