This paper analyzes data obtained between 2000 and 2024 using active spectral nephelometry under artificial humidification and heating of aerosols sampled from the atmosphere. Measuring the response of the aerosol scattering coefficient to changes in relative humidity in the range of 30–90% and temperature from 25 to 250°C allows for an indirect assessment of the soluble/volatile content of the particles. A combined analysis of hygro- and thermo-optical parameters makes it possible to identify the influence of substances evaporating at different temperatures on the hygroscopic properties of the particles and determine the temperature range in which the substances responsible for the hygroscopic properties evaporate.
aerosol, hygroscopicity, volatility, aerosol weather
1. Mihaylov E.F., Vlasenko S.S., Ryshkevich T.I. Vliyanie himicheskogo sostava i mikrostruktury na gigroskopicheskiy rost pirogennogo aerozolya // Izv. RAN. Fizika atmosfery i okeana. 2008. T. 44. № 4. S 450 – 466.
2. Mikhailov E. F., Mironov G. N., Pöhlker C., Ch, X., Krüge M. L., Shiraiwa M., Förster J.-D., Pöschl U., Vlasenko S. S., Ryshkevich T. I., Weigand M., Kilcoyne A. L. D., Andreae M. O. Chemical composition, microstructure, and hygroscopic properties of aerosol particles at the Zotino Tall Tower Observatory (ZOTTO), Siberia, during a summer campaign // Atmos. Chem. Phys. 2015. V.15. P. 8847–8869.
3. Liu Q., Jing B., Peng C., Tong S., Wang W., Ge M., Hygroscopicity of internally mixed multi-component aerosol particles of atmospheric relevance // Atmos. Environ. 2016. V.125. P.69-77.
4. Cerully K. M., Bougiatioti A., Hite Jr. J. R., Guo H., Xu L., Ng N. L., Weber R., Nene A. On the link between hygroscopicity, volatility, and oxidation state of ambient and water-soluble aerosol in the Southeastern United States // Atmos. Chem. Phys. 2015. V.15. P. 8679–8694.
5. Terpugova S.A., Pol'kin Vas.V., Chernov D.G., Yausheva E.P., Pol'kin Vic.V., Kozlov V.S. Aerosol condensation activity in the region of Tomsk in different types of “aerosol weather” // Proceedings of SPIE. 2018. V. 11208, 11208 5V.
6. Terpugova S.A., Panchenko M.V., Yausheva E.P., Chernov D.G., Polkin Vas.V., Polkin V.V., Kozlov V.S., Shmargunov V.P. Aerosol thermooptical characteristics in different types of aerosol weather // Proc. SPIE. 2020. V. 11560. P. 11560 3Q.
7. Pol'kin V. V., Panchenko M. V., Terpugova S. A. Kondensacionnaya aktivnost' chastic atmosfernogo aerozolya raznogo razmera po dannym fotoelektricheskogo schetchika. // Optika atmosfery i okeana. 2021. T. 34. № 12. S. 956–964. DOI:https://doi.org/10.15372/AOO20211205.
8. Pol'kin V. V., Panchenko M. V., Terpugova S. A., Shmargunov V. P. Issledovanie soderzhaniya letuchih veschestv v sostave atmosfernyh chastic raznyh razmerov na osnove termicheskogo vozdeystviya i registracii fotoelektricheskimi schetchikami. // Optika atmosfery i okeana. 2024. T. 37. № 06. S. 490–495. DOI:https://doi.org/10.15372/AOO20240607.
9. Halas S., Szaran J., Low-temperature thermal decomposition of sulfates to SO2 for on-line 34S/32S analysis // Anal. Chem. 1999. V.71. No.15. P. 3254–3257.
