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Ion chromatographic determination of N-nitrosoglyphosate in a glyphosate matrix |
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| Authors: | Paolo Pastore Irma Lavagnini Andrea Boaretto Franco Magno |
| Affiliation: | Department of Inorganic, Metallorganic and Analytical Chemistry, University of Padova, via Marzolo 1, 35131 Padova Italy;Institute of Industrial Chemistry, University of Padova, via Marzolo 9, 35131 Padova Italy;Department of Inorganic, Metalloganic and Analytical Chemistry, University of Padova, via Marzolo 1, 35131 Padova Italy |
| Abstract: | The use of high-performance ion chromatography (HPIC) for the determination of N-nitrosoglyphosate [N-nitroso-N-(phosphonomethyl)glycine] is reported. NMR, spectrophotometric and electroanalytical measurements showed that two conformers of N-nitrosoglyphosate in slow equilibrium are always present. Separation of these conformers is achieved by using appropriate chromatographic conditions. The conductimetric detection of N-nitrosoglyphosate and glyphosate and application to the determination of traces of N-nitrosoglyphosate in complex matrices are also reported. |
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