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Ion chromatographic determination of hydrolysis products of hexafluorophosphate salts in aqueous solution
Citation
Terborg, L and Nowak, S and Passerini, S and Winter, M and Karst, U and Haddad, PR and Nesterenko, PN, Ion chromatographic determination of hydrolysis products of hexafluorophosphate salts in aqueous solution, Analytica Chimica Acta, 714 pp. 121-126. ISSN 0003-2670 (2012) [Refereed Article]
Copyright Statement
Copyright 2011 Elsevier B.V.
DOI: doi:10.1016/j.aca.2011.11.056
Abstract
In this work, hydrolysis of three different hexafluorophosphate salts in purified water was investigated. Aqueous samples of lithium hexafluorophosphate (LiPF6), sodium hexafluorophosphate (NaPF6) and potassium hexafluorophosphate (KPF 6) were prepared and stored for different times. Ion chromatography (IC) with UV as well as non-suppressed and suppressed conductivity detection was used for the analysis of the reaction products. For the detection and identification of the formed decomposition products, an IC method using IonPac AS14A 250mm × 4.0mm i.d. column and 2.5mM KHCO3-2.5mM K2CO3 eluent was established. Besides hexafluorophosphate, four other anionic species were detected in fresh and matured aqueous solutions. The hydrolysis products fluoride (F-), monofluorophosphate (HPO3F-), phosphate (HPO42-) and difluorophosphate (PO2F2-) were found and were unambiguously identified by means of standards or electrospray ionization mass spectrometry (ESI-MS). It was shown that stability of hexafluorophosphate solutions depends on the nature of the counter ion and decreases in the order potassium>sodium>lithium.
Item Details
Item Type: | Refereed Article |
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Keywords: | hexafluorophosphate salts, ion chromatography, hydrolysis, photometric detection, conductivity |
Research Division: | Chemical Sciences |
Research Group: | Analytical chemistry |
Research Field: | Separation science |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the chemical sciences |
UTAS Author: | Terborg, L (Ms Lydia Terborg) |
UTAS Author: | Haddad, PR (Professor Paul Haddad) |
UTAS Author: | Nesterenko, PN (Professor Pavel Nesterenko) |
ID Code: | 82807 |
Year Published: | 2012 |
Web of Science® Times Cited: | 98 |
Deposited By: | Austn Centre for Research in Separation Science |
Deposited On: | 2013-02-19 |
Last Modified: | 2017-10-30 |
Downloads: | 0 |
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