- 期刊
- OpenAccess
Polycyclic Aromatic Hydrocarbons in Atmospheric PM_(2.5) during Winter Haze in Huang-gang, Central China: Characteristics, Sources and Health Risk Assessment
摘要
Levels, compositions, sources and health risk of PM_(2.5)-bound PAHs were measured at a regional monitoring site of Huang-gang in the winter of 2018. Samples were collected every morning, afternoon, evening and late night (LN). The average concentrations of PM_(2.5) and PAHs were 110.4 ± 48.3 μg m^(-3) and 25.6 ± 12.0 ng m^(-3), respectively. The concentration of PM_(2.5) was in the order of evening ＞ morning ＞ afternoon ＞ LN, while PAHs concentration was in the order of evening ＞ LN ＞ morning ＞ afternoon. According to PM_(2.5) concentration and its changing trend, the haze can be divided into three stages: early (low concentration, January 13-15, EHZ), medium (high concentration, January 16-22, MHZ) and late (concentration decreased rapidly, January 23-24, LHZ). A positive correlation (P ＜ 0.01) was observed between PM_(2.5) and Σ_(16)PAHs concentration only in MHZ. Besides, PAHs concentration was positively related to NO_x concentration, CO concentration and temperature but negatively correlated with RH, independent of O_3 concentration. The ratios of OC/EC indicated that the secondary aerosol had a great influence on the formation of haze. Three sources of PAHs including traffic emission, coal combustion and biomass combustion were extracted and quantified, accounting for 54.4%, 13.3% and 32.3% of PAHs, respectively. Potential source contribution function (PSCF) and concentration weighted trajectory (CWT) indicated the transmission of PM_(2.5) from Wuhan and local pollutant emission were crucial to the formation of haze. BaP_(eq) concentration combined with ILCR values was used to evaluate health risk and the results showed this haze had potential health risk to both adults and children.
延伸閱讀
- Jiang, N., Liu, X., Wang, S., Yu, X., Yin, S., Duan, S., Wang, S., Zhang, R., & Li, S. (2019). Pollution Characterization, Source Identification, and Health Risks of Atmospheric-Particle-Bound Heavy Metals in PM_(10) and PM_(2.5) at Multiple Sites in an Emerging Megacity in the Central Region of China. Aerosol and Air Quality Research, 19(2), 247-271+ap1-21. https://doi.org/10.4209/aaqr.2018.07.0275
- Shi, J. W., Peng, Y., Li, W. F., Qiu, W. G., Bai, Z. P., Kong, S. F., & Jin, T. S. (2010). Characterization and Source Identification of PM 10-bound Polycyclic Aromatic Hydrocarbons in Urban Air of Tianjin, China. Aerosol and Air Quality Research, 10(5), 507-518. https://www.airitilibrary.com/Article/Detail?DocID=16808584-201010-201011240030-201011240030-507-518
- Leung, K. L. (2010). Ecological risk analysis of polycyclic aromatic hydrocarbons, black carbon and heavy metals on soils and plants from coal factories inJiyuan City, China [master's thesis, The University of Hong Kong]. Airiti Library. https://www.airitilibrary.com/Article/Detail?DocID=U0029-1812201200018424
- 溫敬峰（2013）。Study on the concentration and composition variations of polycyclic aromatic hydrocarbons (PAHs) in aerosols and dry depositions in Yunlin County〔碩士論文，中山醫學大學〕。華藝線上圖書館。https://doi.org/10.6834/CSMU.2013.00021
- Jiang, H., Xiao, H., Song, H., Liu, J., Wang, T., Cheng, H., & Wang, Z. (2020). A Long-lasting Winter Haze Episode in Xiangyang, Central China: Pollution Characteristics, Chemical Composition, and Health Risk Assessment. Aerosol and Air Quality Research, 20(12), 2859-2873+s1-s11. https://doi.org/10.4209/aaqr.2020.02.0068