Degradation products of profenofos as identified by high-field FTICR mass spectrometry: Isotopic fine structure approach
Autor: | Pakawadee Sutthivaiyakit, Antonius Kettrup, Philippe Schmitt-Kopplin, Dusit Angthararuk, Mourad Harir, Somyote Sutthivaiyakit |
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Rok vydání: | 2016 |
Předmět: |
Insecticides
Hydrogen Electrospray ionization chemistry.chemical_element 010501 environmental sciences Mass spectrometry 01 natural sciences Fourier transform ion cyclotron resonance Mass Spectrometry 0105 earth and related environmental sciences chemistry.chemical_classification Titanium Organothiophosphate Bromine Chromatography Photolysis 010401 analytical chemistry Organothiophosphates General Medicine Hydrogen-Ion Concentration Thailand Pollution 0104 chemical sciences Kinetics chemistry Ultrapure water Sunlight Degradation (geology) Water Pollutants Chemical Food Science Chromatography Liquid |
Zdroj: | Journal of environmental science and health. Part. B, Pesticides, food contaminants, and agricultural wastes. 52(1) |
ISSN: | 1532-4109 |
Popis: | This study was performed to identify the degradation products of profenofos “a phenyl organothiophosphate insecticide” in raw water (RW) collected from the entry point of Metropolitan Water Works Authority “Bangkaen, Thailand” and ultrapure water (UPW) with and without TiO2 under simulated sunlight irradiation. Degradation of profenofos was followed with ultrahigh performance liquid chromatography (UHPLC) and follows pseudo first-order kinetic. Accordingly, high-field FTICR mass spectrometry coupled to an electrospray ionization source was used to reveal the degradation routes of profenofos and the isotopic fine structures (IFS) elucidations to approve the chemical structures of its degradation products. More degradation products were detected in UPW as compared to RW. Consequently, two main degradation pathways namely (i) interactive replacements of bromine and hydrogen by hydroxyl functional groups and (ii) rupture of PO, PS, CBr and CCl bonds were observed. None interactive replacement of chlor... |
Databáze: | OpenAIRE |
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