Chemiluminescence evidence supporting the selective role of ligands in the permanganate oxidation of micropollutants

Roderick, Mark S., Adcock, Jacqui L., Terry, Jessica M., Smith, Zoe M., Parry, Samuel, Linton, Stuart M., Thornton, Megan T., Barrow, Colin J. and Francis, Paul S. 2013, Chemiluminescence evidence supporting the selective role of ligands in the permanganate oxidation of micropollutants, Journal of physical chemistry A, vol. 117, no. 40, pp. 10286-10293, doi: 10.1021/jp405985y.

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Title Chemiluminescence evidence supporting the selective role of ligands in the permanganate oxidation of micropollutants
Author(s) Roderick, Mark S.
Adcock, Jacqui L.ORCID iD for Adcock, Jacqui L.
Terry, Jessica M.
Smith, Zoe M.
Parry, Samuel
Linton, Stuart M.ORCID iD for Linton, Stuart M.
Thornton, Megan T.ORCID iD for Thornton, Megan T.
Barrow, Colin J.ORCID iD for Barrow, Colin J.
Francis, Paul S.ORCID iD for Francis, Paul S.
Journal name Journal of physical chemistry A
Volume number 117
Issue number 40
Start page 10286
End page 10293
Total pages 8
Publisher American Chemical Society
Place of publication Washington, D.C.
Publication date 2013
ISSN 1089-5639
Summary The selective increase in the oxidation rate of certain organic compounds with permanganate in the presence of environmental "ligands" and reduced species has been ascribed to the different reactivity of the target compounds toward Mn(III), which bears striking similarities to recent independent investigations into the use of permanganate as a chemiluminescence reagent. In spite of the importance of Mn(III) in the light-producing pathway, the dependence of the oxidation mechanism for any given compound on this intermediate could not be determined solely through the emission intensity. However, target compounds susceptible to single-electron oxidation by Mn(III) (such as bisphenol A and triclosan) can be easily distinguished by the dramatic increase in chemiluminescence intensity when a permanganate reagent containing high, stable concentrations of Mn(III) is used. The differences are accentuated under the low pH conditions that favor the chemiluminescence emission due to the greater reactivity of Mn(III) and the greater influence of complexing agents. This study supports the previously postulated selective role of ligands and reducing agents in permanganate oxidations and demonstrates a new approach to explore the chemistry of environmental manganese redox processes.
Language eng
DOI 10.1021/jp405985y
Field of Research 039901 Environmental Chemistry (incl Atmospheric Chemistry)
Socio Economic Objective 970103 Expanding Knowledge in the Chemical Sciences
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2013, American Chemical Society
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