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Selective signalling of glyphosate in water using europium luminescence

Jennings, Laura B.; Shuvaev, Sergey; Fox, Mark A.; Pal, Robert; Parker, David

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Authors

Laura B. Jennings

Sergey Shuvaev



Abstract

A series of four emissive europium complexes has been evaluated for the binding of glyphosate in various aqueous media, including river water and grain extracts. Binding selectivity toward inorganic phosphate and bicarbonate was enhanced by measuring samples at pH 5.9, above the pKa of glyphosate itself. The highest affinity was shown with [Eu·L1], which creates an exocyclic tripicolylamine moiety when one pyridine group dissociates from Eu. Glyphosate was bound selectively over dihydrogenphosphate, glycinate, aminomethylphosphonate and the related herbicide glufosinate. The complex was used to measure glyphosate over the range 5 to 50 μM, in river water and grain extracts.

Citation

Jennings, L. B., Shuvaev, S., Fox, M. A., Pal, R., & Parker, D. (2018). Selective signalling of glyphosate in water using europium luminescence. Dalton Transactions, 47(45), 16145-16154. https://doi.org/10.1039/c8dt03823f

Journal Article Type Article
Acceptance Date Oct 23, 2018
Online Publication Date Oct 26, 2018
Publication Date Oct 26, 2018
Deposit Date Dec 6, 2018
Publicly Available Date Mar 28, 2024
Journal Dalton Transactions
Print ISSN 1477-9226
Electronic ISSN 1477-9234
Publisher Royal Society of Chemistry
Peer Reviewed Peer Reviewed
Volume 47
Issue 45
Pages 16145-16154
DOI https://doi.org/10.1039/c8dt03823f

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