Electrically assisted solid-phase microextraction combined with liquid chromatography–mass spectrometry for determination of parathion in water
| Autor: | Tzung-Jie Yang, Maw-Rong Lee |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Detection limit
Chromatography Molecular Structure Parathion Analytical chemistry Water Mass spectrometry Solid-phase microextraction High-performance liquid chromatography Mass Spectrometry Analytical Chemistry chemistry.chemical_compound Electricity chemistry Liquid chromatography–mass spectrometry Parathion methyl Sample preparation Solid Phase Microextraction Chromatography Liquid Environmental Monitoring |
| Zdroj: | Talanta. 82:766-770 |
| ISSN: | 0039-9140 |
| Popis: | A novel method for electrically assisted microextraction coupled to liquid chromatography–mass spectrometry was evaluated for determination of trace levels of parathion in water. A pencil lead electrode was used in a di-electrode system to extract parathion onto the electrode surface with a reductive potential applied. The optimum extraction conditions were found to be a potential of −600 mV for 60 s in pH 2 phosphate buffer solution. The parathion was desorbed statically for 1 min and dynamically for 3 min in the commercial SPME–HPLC desorption chamber, then analyzed with LC–APCI–MS/MS. The detection limit (LOD) for parathion in water was found to be 0.3 ng/mL. The proposed technique was demonstrated to be fast, sensitive and not require a solvent sample pretreatment. |
| Databáze: | OpenAIRE |
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