Chemical characteristics and health risk assessment of fine particulate matter from typical emission source in Xi'an, Northwestern China
Author:
Meng Ziqi1, Xing Yan2, Zhang Xin2, Niu Shaomin2, Tian Weihua2, Zhang Qian1
Affiliation:
1. Xi'an University of Architecture and Technology 2. Shaanxi Province
Abstract
Abstract
To establish and complete the source profile of fine particulate matter (PM2.5) in a Chinese megacity- Xi’an, the morphology, chemical characteristics and health risks of PM2.5 emitted from different sources were explored. In this study, scanning electron microscope, inductively coupled plasma mass spectrometer, ion chromatograph and carbon analyzer were utilized to analyze and determine the source emission PM2.5 samples. The results showed that PM2.5 emitted from stationary source was mostly regular spherical, while the dust including soil wind dust and urban dust was practically irregular and with large size. PM2.5 of mobile source was aggregated porous carbonaceous particles, and of biomass burning was floc or lamellar. Si was regarded as the marker of soil wind dust PM2.5. Si and SO42− accounted for a relatively high proportion in urban dust PM2.5 (52.2% and 27.9%). Ca could be used as the tracer of construction cement dust due to its high mass fraction. Compared to other sources, mobile source showed higher NO3− proportion while biomass burning was dominated by Na and K. Attributed to relatively higher OC/EC in Xi'an than other cities, the secondary pollution was more serious. The health risk assessment results showed that the risk of Cr through inhalation route was 10− 6~10− 4 for a stationary source, which was over the threshold. In particular, the non-carcinogenic risk and carcinogenic risk of children were all higher than adults.
Publisher
Springer Science and Business Media LLC
Reference51 articles.
1. Abd El-Hafiz, N. A., Abd El-Moghny, M. W., El-Desoky, H. M., Afifi, A. A., 2015. Characterization and technological behavior of basalt raw materials for Portland cement clinker production. IJISET 2(7). 2. Ahmad, S., Zeb, B., Ditta, A., Alam, K., Shahid, U., Shah, A. U., Ahmad, I., Alasmari, A., Sakran, M., Alqurashi, M., 2023. Morphological, mineralogical, and biochemical characteristics of particulate matter in three size fractions (PM10, PM2.5, and PM1) in the urban environment. ACS Omega 8, 31661–31674. 3. Bai, W., Zhao, X., Yin, B., Guo, L., Zhang, W., Wang, X., Yang, W., 2022. Characteristics of PM2.5 in an industrial city of Northern China: mass concentrations, chemical composition, source apportionment, and health risk assessment. Inj. J. Env. Res. Pub. He. 19, 5443. 4. Birch, M., Cary, R., 1996. Elemental carbon-based method for monitoring occupational exposures to particulate diesel exhaust. Aerosol Sci. Tech. 25, 221–241. 5. Cabada, J. C., Pandis, S. N., Subramanian, R., Robinson, A. L., Polidori, A., Turpin, B., 2004. Estimating the secondary organic aerosol contribution to PM2.5 using the EC tracer method special issue of aerosol science and technology on findings from the fine particulate matter supersites program. Aerosol Sci. Tech 38, 140–155.
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