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Pattern recognition of toxic metal ions using a single-probe thiocoumarin array

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Abstract

Pattern recognition methods such as linear discriminant analysis and principal component analysis are useful tools for the identification of analytes such as metal ions. These typically use a number of distinct molecular probes that exhibit cross-reactivity. Here we report a single molecule that demonstrates varying response in different solvents, therefore enabling the combination of probe and solvent to generate the required array diversity. Seven toxic metal ions were introduced as aqueous samples, and PCA and LDA techniques applied. The array could correctly identify all metals in pure water samples, all metals in doped lake-water samples. Further, we have explored the limit of detection of the system for two metal ions, Cu(II) and Hg(II), confirming the promise of the system as a candidate to identify toxic metals in environmental water sources.

Graphical abstract: Pattern recognition of toxic metal ions using a single-probe thiocoumarin array

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Publication details

The article was received on 10 Sep 2018, accepted on 21 Nov 2018 and first published on 27 Nov 2018


Article type: Paper
DOI: 10.1039/C8AN01747F
Citation: Analyst, 2019, Advance Article
  • Open access: Creative Commons BY-NC license
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    Pattern recognition of toxic metal ions using a single-probe thiocoumarin array

    D. G. Smith, L. Mitchell and E. J. New, Analyst, 2019, Advance Article , DOI: 10.1039/C8AN01747F

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