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Updated: Jan 22, 2026

Determination of the Gas-phase Acidities of Oligopeptides
Published on: June 24, 2013
Gas-Phase Reactivity of Carbonate Ions with Sulfur Dioxide: an Experimental Study of Clusters Reactions
Anna Troiani1, Chiara Salvitti2, Giulia de Petris3
1Dipartimento di Chimica e Tecnologie del Farmaco, "Sapienza" University of Rome, P.le Aldo Moro 5, 00185, Rome, Italy. anna.troiani@uniroma1.it.
Abstract:
The reactivity of carbonate cluster ions with sulfur dioxide has been investigated in the gas phase by mass spectrometric techniques. SO2 promotes the displacement of carbon dioxide from carbonate clusters through a stepwise mechanism, leading to the quantitative conversion of the carbonate aggregates into the corresponding sulfite cluster ions. The kinetic study of the reactions of positive, negative, singly, and doubly charged ions reveals very fast and efficient processes for all the carbonate ions.
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