Water-soluble ions were analysed in size segregated aerosol samples collected in the port of Alicante (Southeastern Spain) during summer and winter using a multistage cascade impactor. Seasonal variations in the size distributions of the analysed components and the influence of bulk materials handling (loading/unloading and stockpiling) at the docks were investigated. The size distributions of SO42-, NH4+ and K+ were characterized by prominent peaks in the condensation and droplet modes, both in summer and winter, while those of Ca-2+, Na+, Mg2+ and Cl- had a main peak centred at similar to 4 mu m. Although oxalate size distributions were similar during both seasons, the fraction of coarse-mode oxalate increased in summer most likely as a result of volatilization and repartition processes or reactions of oxalic acid with coarse alkaline particles. Nitrate size distributions were dominated by a coarse mode; however, during winter, modal peaks in the submicron size range were also observed due to favourable conditions for the formation of fine-mode NH4NO3. Harbour activities had a significant impact only on the concentrations of calcium, particularly in the coarse fraction, during both summer and winter.

Size segregated ionic species collected in a harbour area / Navarro-Selma, B; Clemente, A; Nicolás, J F; Crespo, J; Carratalá, A; Lucarelli, F; Giardi, F; Galindo, N; Yubero, E. - In: CHEMOSPHERE. - ISSN 0045-6535. - ELETTRONICO. - 294:(2022), pp. 133693.0-133693.0. [10.1016/j.chemosphere.2022.133693]

Size segregated ionic species collected in a harbour area

Lucarelli, F;Giardi, F;
2022

Abstract

Water-soluble ions were analysed in size segregated aerosol samples collected in the port of Alicante (Southeastern Spain) during summer and winter using a multistage cascade impactor. Seasonal variations in the size distributions of the analysed components and the influence of bulk materials handling (loading/unloading and stockpiling) at the docks were investigated. The size distributions of SO42-, NH4+ and K+ were characterized by prominent peaks in the condensation and droplet modes, both in summer and winter, while those of Ca-2+, Na+, Mg2+ and Cl- had a main peak centred at similar to 4 mu m. Although oxalate size distributions were similar during both seasons, the fraction of coarse-mode oxalate increased in summer most likely as a result of volatilization and repartition processes or reactions of oxalic acid with coarse alkaline particles. Nitrate size distributions were dominated by a coarse mode; however, during winter, modal peaks in the submicron size range were also observed due to favourable conditions for the formation of fine-mode NH4NO3. Harbour activities had a significant impact only on the concentrations of calcium, particularly in the coarse fraction, during both summer and winter.
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Navarro-Selma, B; Clemente, A; Nicolás, J F; Crespo, J; Carratalá, A; Lucarelli, F; Giardi, F; Galindo, N; Yubero, E
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2158/1284520
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