Soluble manganese(IV) as a chemiluminescence reagent for the determination of opiate alkaloids, indoles and analytes of forensic Interest

Brown, Allyson, Lenehan, Claire, Francis, Paul, Dunstan, David E. and Barnett, Neil 2007, Soluble manganese(IV) as a chemiluminescence reagent for the determination of opiate alkaloids, indoles and analytes of forensic Interest, Talanta, vol. 71, no. 5, pp. 1951-1957.

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Title Soluble manganese(IV) as a chemiluminescence reagent for the determination of opiate alkaloids, indoles and analytes of forensic Interest
Author(s) Brown, Allyson
Lenehan, Claire
Francis, Paul
Dunstan, David E.
Barnett, Neil
Journal name Talanta
Volume number 71
Issue number 5
Start page 1951
End page 1957
Publisher Elsevier BV
Place of publication Amsterdam, Netherlands
Publication date 2007-03-30
ISSN 0039-9140
1873-3573
Keyword(s) soluble manganese(IV)
chemiluminescence spectra
flow injection analysis
formaldehyde enhancement
monolithic column HPLC
Summary We present the results of our investigations into the use of soluble manganese(IV) as a chemiluminescence reagent, which include a significantly faster method of preparation and a study on the effect of formaldehyde and orthophosphoric acid concentration on signal intensity. Chemiluminescence detection was applied to the determination of 16 analytes, including opiate alkaloids, indoles and analytes of forensic interest, using flow injection analysis methodology. The soluble manganese(IV) reagent was less selective than either acidic potassium permanganate or tris(2,2′-bipyridyl)ruthenium(III) and therefore provided a more universal chemiluminescence detection system for HPLC. A broad spectral distribution with a maximum at 730 ± 5 nm was observed for the reaction between the soluble manganese(IV) and a range of analytes, as well as the background emission from the reaction with the formaldehyde enhancer. This spectral distribution matches that reported for chemiluminescence reactions with acidic potassium permanganate, where a manganese(II) emitting species was elucidated. This provides further evidence that the emission evoked in reactions with soluble manganese(IV) also emanates from a manganese(II) species, and not bimolecular singlet oxygen as suggested by previous authors.
Language eng
Field of Research 030103 Flow Analysis
HERDC Research category C1 Refereed article in a scholarly journal
Copyright notice ©2006, Elsevier B.V.
Persistent URL http://hdl.handle.net/10536/DRO/DU:30007490

Document type: Journal Article
Collection: School of Life and Environmental Sciences
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