Particle size distribution of inorganic and organic ions in coastal and inland Antarctic aerosol

The concentration and particle-size distribution of ionic species in Antarctic aerosol samples were determined to investigate their potential sources, chemical evolution, and transport. We analyzed aerosol samples collected at two different Antarctic sites: a coastal site near Victoria Land close to...

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Bibliographic Details
Published in:Environmental Science and Pollution Research
Main Authors: BARBARO, ELENA, PADOAN, SARA, KIRCHGEORG, TORBEN, ZANGRANDO, Roberta, TOSCANO, Giuseppa, BARBANTE, Carlo, GAMBARO, Andrea
Other Authors: Barbaro, Elena, Padoan, Sara, Kirchgeorg, Torben, Zangrando, Roberta, Toscano, Giuseppa, Barbante, Carlo, Gambaro, Andrea
Format: Article in Journal/Newspaper
Language:English
Published: 2017
Subjects:
Aerosol
Antarctica
Carboxylic acid
Ion
Particle size distribution
Sea spray
Environmental Chemistry
Pollution
Health
Toxicology and Mutagenesis
Settore CHIM/01 - Chimica Analitica
Settore CHIM/12 - Chimica dell'Ambiente e dei Beni Culturali
Antarc*
Antarctic
Victoria Land
Online Access:http://hdl.handle.net/10278/3685806
https://doi.org/10.1007/s11356-016-8042-x
http://www.springerlink.com/content/0944-1344
Description
Summary:The concentration and particle-size distribution of ionic species in Antarctic aerosol samples were determined to investigate their potential sources, chemical evolution, and transport. We analyzed aerosol samples collected at two different Antarctic sites: a coastal site near Victoria Land close to the Italian Research Base “Mario Zucchelli”, and another site located on the Antarctic plateau, close to Italian-French Concordia Research Station. We investigated anionic compounds using ion-chromatography coupled to mass spectrometry, and cationic species through capillary ion chromatography with conductometry. Aerosol collected close to the coast was mainly characterized by sea salt species such as Na+, Mg2+, and SO42−. These species represented a percentage of 88% of the total sum of all detected ionic species in the aerosol samples from the coastal site. These species were mainly distributed in the coarse fraction, confirming the presence of primary aerosol near the ocean source. Aerosol collected over the Antarctic plateau was characterized by high acidity, with nss-SO42−, NO3−, and methanesulfonic acid as the most abundant species. These species were mainly distributed in the <0.49μm fraction, and they had a behavior of a typical secondary aerosol, where several chemical and physical processes occurred.

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