Contactless, probeless and non-titrimetric determination of acid-base reactions using Broadband Acoustic Resonance Dissolution Spectroscopy (BARDS)

Show simple item record Ahmed, M. Rizwan Vos, Bastiaan McSweeney, Sean Kruse, Jacob Fitzpatrick, Dara 2018-02-12T11:58:19Z 2018-02-12T11:58:19Z 2018-01-16
dc.identifier.citation Ahmed, M. R., McSweeney, S., Kruse, J., Vos, B. and Fitzpatrick, D. (2018) ‘Contactless, probeless and non-titrimetric determination of acid-base reactions using broadband acoustic resonance dissolution spectroscopy (BARDS)’, Analyst, 143(4), pp. 956-962. doi:10.1039/C7AN01447C en
dc.identifier.volume 143
dc.identifier.issued 4
dc.identifier.startpage 956
dc.identifier.endpage 962
dc.identifier.issn 0003-2654
dc.identifier.doi 10.1039/C7AN01447C
dc.description.abstract pH determination is a routine measurement in scientific laboratories worldwide. Most major advances in pH measurement were made in the 19th and early 20th century. pH measurements are critical for the determination of acid base reactions. This study demonstrates how an acid-base reaction can be monitored without the use of a pH probe, indicator and titres of reagent. The stoichiometric reaction between carbonate and HCl acid yields specific quantities of CO2, which causes reproducible changes to the compressibility of the solvent. This in turn slows down the speed of sound in solution which is induced by a magnetic follower gently tapping the inner wall of the vessel. As a consequence the frequencies of the acoustic resonances in the vessel are reduced. This approach is called Broadband Acoustic Resonance Dissolution Spectroscopy (BARDS) which harnesses this phenomenon for many applications. The acid-carbonate experiments have also been validated using H2SO4 acid and using both potassium and sodium counterions for the carbonate. This method can be used to interrogate strong acid-base reactions in a rapid and non-invasive manner using carbonate as the base. The data demonstrates the first example of a reactant also acting as an indicator. The applicability of the method to weak acids has yet to be determined. A novel conclusion from the study is that a person with a well-trained ear is capable of determining the concentration and pH of a strong acid just by listening. This brings pH measurement into the realm of human perception. en
dc.format.mimetype application/pdf en
dc.language.iso en en
dc.publisher Royal Society of Chemistry en
dc.rights © 2018, the Authors. Published by the Royal Society of Chemistry. All rights reserved. This document is the Author accepted version of an article published in final form in Analyst. To access the final published work see en
dc.subject Acid en
dc.subject Reactant en
dc.subject Indicator en
dc.title Contactless, probeless and non-titrimetric determination of acid-base reactions using Broadband Acoustic Resonance Dissolution Spectroscopy (BARDS) en
dc.type Article (peer-reviewed) en
dc.internal.authorcontactother Dara Fitzpatrick, Chemistry, University College Cork, Cork, Ireland. +353-21-490-3000 Email: en
dc.internal.availability Full text available en Access to this article is restricted until 12 months after publication by request of the publisher. en 2019-01-16 2018-01-24T12:59:01Z
dc.description.version Accepted Version en
dc.internal.rssid 423065460
dc.contributor.funder Irish Research Council en
dc.contributor.funder Alltech en
dc.description.status Peer reviewed en
dc.identifier.journaltitle Analyst en
dc.internal.copyrightchecked Yes en
dc.internal.licenseacceptance Yes en
dc.internal.IRISemailaddress en

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