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Analysis and sampling of atmospheric particles of precipitation sub-events in Istanbul, Turkey

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Abstract

The scavenging of atmospheric particles from the atmosphere is known to be efficiently carried out by the below-cloud scavenging process. To examine this process, a total of 51 sub-event samplings was carried out in 10 precipitations during a 129-day sampling period. PM2.5 samples were also collected simultaneously. The concentrations of Na, Mg, K, Ca, Al, Cu, Mn, and Fe were determined in the sub-events as well as in PM2.5 samples, and the pH values were also measured. The observed volumeweighted mean pH values of the precipitation sub-events were between 6.58 and 8.32, with an average value of 7.28. It was observed that the element with the highest average volumeweighted mean concentration value in precipitation was Na. Among the elements in PM2.5 particles, K had the highest concentration value. Next, the scavenging ratios of the elements were calculated in the precipitations that occurred. According to the averages of scavenging ratios of precipitations, it was determined that the element with the highest scavenging ratio was Na and the element with the lowest scavenging ratio was Fe. In addition, scavenging indexes were also determined in precipitations events. Variations in the scavenging properties of the elements were observed in each sub-event. The novelty of this study is that it is the first study carried out in Istanbul and even Turkey in terms of calculating scavenging indexes in sub-event sampling. Although this study is local, however, the importance of studies like this should not be ignored in terms of testing different air quality models.

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Acknowledgements

This study was supported by The Scientific Research Centre of Marmara University (BAPKO) with project FEN-E-040310-0039 and The Scientific and Technological Research Council of Turkey (TUBITAK) with project 109R022.

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Correspondence to Ilker Oruc.

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The authors declare that they have no conflict of interest.

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Editorial responsibility: Mohamed F. Yassin.

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Bahauddin, M., Oruc, I., Baltaci, H. et al. Analysis and sampling of atmospheric particles of precipitation sub-events in Istanbul, Turkey. Int. J. Environ. Sci. Technol. 19, 5985–5998 (2022). https://doi.org/10.1007/s13762-022-04110-1

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  • DOI: https://doi.org/10.1007/s13762-022-04110-1

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