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The inorganic element determination technology for atmospheric dustfall in the main urban area of Xi'an city was independently constructed based on energy dispersive X-ray fluorescence spectroscopy for a period of one year. At the same time， the source of inorganic elements in atmospheric dustfall was analyzed using positive matrix factorization method. The research results show that the abundance distribution range of 20 inorganic elements is relatively wide， with Fe element having the highest abundance and Se element having the lowest level. The abundance levels of each inorganic element vary greatly; The factors determined by source apportionment are mobile sources， construction dustfall， metal processing and smelting， industrial production and manufacturing， biomass combustion sources， road and soil dustfall， and coal-fired sources. The contribution rates of each factor are 10.90%， 23.63%， 13.11%， 10.45%， 12.64%， 25.34%， and 3.92%， respectively， with the highest being road and soil dustfall and the lowest being coal-fired sources; The overall balance of the proportion of motor vehicle sources is fundamentally related to the high degree of "dispersion" and "mobility" of motor vehicle emission sources; The differential changes in construction dustfall are related to the number of construction projects started by construction enterprises and the distribution of construction projects; The proportion of biomass burning at all locations from July to October 2023 (except for the first location after June) is relatively high， which is related to factors such as agricultural open burning， outdoor barbecue， and relatively good atmospheric diffusion conditions; The proportion of road and soil dustfall in March-May 2023 and November-December 2023 is relatively high， mainly due to the high frequency of sandstorms and the accumulation of a large amount of dustfall on the surface during the deciduous season; The coal-fired sources from June to October 2023 have a certain proportion and are relatively significant in most locations， which is related to external contributions.
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Basic Information:
DOI：10.13637/j.issn.1009-6094.2026.0002
China Classification Code:X513
Citation Information:
[1]Yang Jianjun,Zhang Yong,Liu Suixin ,et al.Source analysis of inorganic elements in atmospheric dustfall in the main urban area of Xi'an city based on ED-XRF and PMF[J].Journal of Safety and Environment().DOI:10.13637/j.issn.1009-6094.2026.0002.
Fund Information:
陕西省重点研发计划项目（2023–YBSF–084）; 西安市科技计划项目（25PTZX05）
2026-09-11
2026-09-11
2026-09-11