Abstract
In this paper, Changji, **njiang, northwest China, was selected as the study area, and platinum group elements (PGEs) in PM2.5 were quantified by ICP-MS using microwave digestion. The results indicated that the average concentrations (and range) of Rh, Pd, and Pt in PM2.5 were 0.21 (n.d. −1.41) ng/m3, 8.09 (n.d. −59.50) ng/m3, and 0.12 (n.d. −0.83) ng/m3, respectively. The concentration of Pd was significantly higher than Rh and Pt. Moreover, the seasonal variations of Rh and Pd were the same: highest in summer and lower in other seasons. However, the seasonal variation of Pt was opposite to that of Rh and Pd: highest in winter and lower in other seasons. Seasonal differences in emission sources of PGEs and the climatic characteristics of arid regions played important roles in the seasonal changes of PGEs. Rh and Pd had a common source and similar diurnal variation. The major influencing factors were traffic volume and meteorological conditions. The diurnal variation regularity of Pt was different from Rh and Pd. The superimposed effect of vehicle exhaust emissions and coal-fired emissions was the main reason why the diurnal variation of Pt was more complicated than those of Rh and Pd. The diurnal concentration of Pt varied with the seasons. It is caused by seasonal coal combustion and meteorological conditions.
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Data availability
Since the data is completed by the cooperation of many scholars, the data set generated and/or analyzed in the current research process cannot be publicly obtained, but are available from the corresponding author on reasonable request. The data that support the findings of this study are available from the corresponding author (Liu Y. Y.), upon reasonable request.
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Acknowledgements
The authors thank Kun Zhang, Shicai Zhang, Tao Zhang, Yunjia Mao, and others in the Department of Chemistry and Applied Chemistry at Changji University for hel** completing the sampling and experimental work.
Funding
This work was supported by the National Natural Science Foundation of China (41867060). Funding agencies provided complete sampling experimental conditions for the data in the manuscript, designed manuscript research ideas, and edited the manuscript.
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Liu, H., Ding, F., Liu, Y. et al. The temporal distribution of platinum group elements (PGEs) in PM2.5. Environ Monit Assess 194, 57 (2022). https://doi.org/10.1007/s10661-021-09706-7
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DOI: https://doi.org/10.1007/s10661-021-09706-7