Analysis and Imaging of Biocidal Agrochemicals using ToF-SIMS

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Analysis and Imaging of Biocidal Agrochemicals using ToF-SIMS

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Title: Analysis and Imaging of Biocidal Agrochemicals using ToF-SIMS
Author(s):
Converso, Valerio;
Fearn, Sarah;
Ware, Ecaterina;
McPhail, David S.;
Flemming, Anthony J.;
Bundy, Jacob G.
Date Created: 2017-09-06
Item Type: article
Keywords: Secondary ion mass spectrometry
Time-of-flight mass spectrometry
Fungicides--fludioxonil
Description: Includes supplementary material
Abstract: ToF-SIMS has been increasingly widely used in recent years to look at biological matrices, in particular for biomedical research, although there is still a lot of development needed to maximise the value of this technique in the life sciences. The main issue for biological matrices is the complexity of the mass spectra and therefore the difficulty to specifically and precisely detect analytes in the biological sample. Here we evaluated the use of ToF-SIMS in the agrochemical field, which remains a largely unexplored area for this technique. We profiled a large number of biocidal active ingredients (herbicides, fungicides, and insecticides); we then selected fludioxonil, a halogenated fungicide, as a model compound for more detailed study, including the effect of co-occurring biomolecules on detection limits. There was a wide range of sensitivity of the ToF-SIMS for the different active ingredient compounds, but fludioxonil was readily detected in real-world samples (wheat seeds coated with a commercial formulation). Fludioxonil did not penetrate the seed to any great depth, but was largely restricted to a layer coating the seed surface. ToF-SIMS has clear potential as a tool for not only detecting biocides in biological samples, but also mapping their distribution.
Publisher: Springer Nature
ISSN: 2045-2322
Source: Scientific Reports
Link to Related Resource: http://dx.doi.org/10.1038/s41598-017-11412-9
Persistent Link: http://hdl.handle.net/10735.1/6000
Bibliographic Citation: Converso, Valerio, Sarah Fearn, Ecaterina Ware, David S. McPhail, et al. 2017. "Analysis and imaging of biocidal agrochemicals using ToF-SIMS." Scientific Reports 7, doi:10.1038/s41598-017-11412-9
Terms of Use: CC BY 4.0 (Attribution)
©2017 The Authors. All Rights Reserved.
Sponsors: European Union’s Seventh Framework Programme grant no. 607466

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CC BY 4.0 (Attribution) Except where otherwise noted, this item's license is described as CC BY 4.0 (Attribution)