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- W2000948411 abstract "Endosufan, α and β, and three conversion products, sulphate, ether and lactone, were simultaneously determined in human serum by means of an analytical procedure which combines extraction with organic solvents, clean-up with H2SO4 and by liquid column chromatography, and detection by gas chromatography (GC) using electron capture detection (ECD) and tandem mass spectrometry (MS/MS). The procedure was validated and the values of some merit figures, such as linear range, detection and quantitation limits, accuracy, precision and recovery, obtained with the GC/ECD and the GC/MS/MS methods, were compared. The lower limits of detection in GC/ECD and GC/MS/MS were 0.03 and 0.05 µg I−1, respectively. The recovery of the pesticides at the 20 µg I−1 concentration level was 60–65%, with the exception of endosufan α. Recovery studies at higher levels (100 and 200 µg I−1) were independent of pesticide concentration in serum samples. The application of the proposed analytical methodology to the determination of endosulfans and their metabolites in real samples was tested by analyzing serum samples from a population living in agricultural areas of Almeria (Spain). The results show the advantage of MS/MS over the ECD detector in the analysis of serum samples where matrix interferences can be confused with target pesticides. Copyright © 2000 John Wiley & Sons, Ltd." @default.
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- W2000948411 date "2000-06-15" @default.
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- W2000948411 title "Trace determination of ?- and ?-endosulfan and three metabolites in human serum by gas chromatography electron capture detection and gas chromatography tandem mass spectrometry" @default.
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- W2000948411 doi "https://doi.org/10.1002/(sici)1097-0231(20000615)14:11<939::aid-rcm969>3.0.co;2-t" @default.
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