Glyphosate analysis using sensors and electromigration separation techniques as alternatives to gas or liquid chromatography

Analytical and Bioanalytical Chemistry
Günter GauglitzCarolin Huhn

Abstract

Since its introduction in 1974, the herbicide glyphosate has experienced a tremendous increase in use, with about one million tons used annually today. This review focuses on sensors and electromigration separation techniques as alternatives to chromatographic methods for the analysis of glyphosate and its metabolite aminomethyl phosphonic acid. Even with the large number of studies published, glyphosate analysis remains challenging. With its polar and depending on pH even ionic functional groups lacking a chromophore, it is difficult to analyze with chromatographic techniques. Its analysis is mostly achieved after derivatization. Its purification from food and environmental samples inevitably results incoextraction of ionic matrix components, with a further impact on analysis derivatization. Its purification from food and environmental samples inevitably results in coextraction of ionic matrix components, with a further impact on analysis and also derivatization reactions. Its ability to form chelates with metal cations is another obstacle for precise quantification. Lastly, the low limits of detection required by legislation have to be met. These challenges preclude glyphosate from being analyzed together with many other pest...Continue Reading

References

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Citations

Mar 20, 2018·Analytical and Bioanalytical Chemistry·Carolin Huhn
Jun 25, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·Yifan WangJinkai Xue
Nov 27, 2020·Biomaterials Science·Jyoti AhlawatMahesh Narayan
Jun 29, 2021·The Science of the Total Environment·Luis Angel Zambrano-IntriagoMaria C B S M Montenegro

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