HPLC-MS/MS method for analysis of isoproturon in difficult matrix: poppy seeds
2008
Kovalczuk, T.,Vysoka Skola Chemicko-technologicka, Prague (Czech Republic). Ustav Chemie a Analyzy Potravin | Poustka, J.,Vysoka Skola Chemicko-technologicka, Prague (Czech Republic). Ustav Chemie a Analyzy Potravin | Hajslova, J.,Vysoka Skola Chemicko-technologicka, Prague (Czech Republic). Ustav Chemie a Analyzy Potravin
HPLC-MS/MS method was used to quantify the residues of phenylurea herbicides in poppy seeds. The extraction of residues was realised by methanol-water mixture, Supelclean LC-18 SPE cartridges were used for the purification of crude extracts. For HPLC separation of isoproturon SPE fraction Lichrospher C18 column (25 cm x 4 mm, 5 microm) was employed. A mass spectrometer with ion trap analyser operating in positive atmospheric pressure chemical ionisation (APCI) and MS/MS mode were used for the detection and quantification of the target analyte. The following performance characteristics were obtained: detection limit 0.01 mg/kg, recovery 84%, repeatability 7%.
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