Hu Feng, Wang Xinglei, Li Qi
Key Laboratory of Pollutant Chemistry and Environmental Treatment, College of Chemistry and Environmental Sciences, Yili Normal University, Yining, 835000, China.
Yili Prefecture Product Quality Institute, Yining, 835000, China.
Sci Rep. 2025 Jan 24;15(1):3087. doi: 10.1038/s41598-024-69615-w.
To study the micro-morphological characteristics of PM2.5 and its effect on ambient air quality, a 7500F scanning electron microscope (SEM) was utilized in this study to examine the micromorphology and elemental composition of PM2.5 and its impact on ambient air quality during heavily polluted weather in Yining City in the winter of 2018-2019. The results revealed the presence of numerous large solid shapes, small strip shapes, and a few irregular shapes. Additionally, the quantity of PM2.5 particles adsorbed on the glass fiber filter membrane was high, indicating a significant impact of PM2.5 particles on the urban area. Based on the analysis of particulate matter, heating time, and environmental conditions of samples during the winter heating season, it was concluded that the PM2.5 sample is rich in N, S, P, C, Na, Ge, Rb, Zn, Fe, Mg, Al, Mo, Pt, and Pb. The findings suggest that the urban area is predominantly influenced by industrial dust, road dust, construction cement dust, vehicle exhaust dust, and coal combustion during winter heating. The analysis and evaluation of the sample data indicate that PM2.5 in the urban area is influenced by human activities.
为研究PM2.5的微观形态特征及其对环境空气质量的影响，本研究利用一台7500F扫描电子显微镜（SEM），对2018 - 2019年冬季伊宁市重度污染天气期间PM2.5的微观形态、元素组成及其对环境空气质量的影响进行了检测。结果显示存在大量大的固体形状、小的条状形状以及一些不规则形状。此外，吸附在玻璃纤维滤膜上的PM2.5颗粒数量较多，表明PM2.5颗粒对市区有显著影响。通过对冬季供暖季样品的颗粒物、加热时间和环境条件进行分析，得出PM2.5样品富含N、S、P、C、Na、Ge、Rb、Zn、Fe、Mg、Al、Mo、Pt和Pb的结论。研究结果表明，冬季供暖期间市区主要受工业粉尘、道路扬尘、建筑水泥粉尘、汽车尾气粉尘和煤炭燃烧的影响。对样品数据的分析和评估表明，市区的PM2.5受人类活动影响。
