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Issue 45, 2018
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Selective signalling of glyphosate in water using europium luminescence

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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.

Graphical abstract: Selective signalling of glyphosate in water using europium luminescence

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Publication details

The article was received on 21 Sep 2018, accepted on 23 Oct 2018 and first published on 26 Oct 2018


Article type: Paper
DOI: 10.1039/C8DT03823F
Citation: Dalton Trans., 2018,47, 16145-16154

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    Selective signalling of glyphosate in water using europium luminescence

    L. B. Jennings, S. Shuvaev, M. A. Fox, R. Pal and D. Parker, Dalton Trans., 2018, 47, 16145
    DOI: 10.1039/C8DT03823F

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