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Bulletin of the Korean Chemical Society (BKCS)

ISSN 0253-2964(Print)
ISSN 1229-5949(Online)
Volume 21, Number 5
BKCSDE 21(5)
May 20, 2000

Title	An Evaluation of Liquid Chromatography/Mass Spectrometry with Atmospheric Pressure Chemical Ionization for the Rapid and Simultaneous Measurement of Carbamate Pesticides and Organophosphorus Pesticides
Author	Byungjoo Kim, Hun-Young So
Keywords
Abstract	Liquid chromatography/mass spectrometry with an atmospheric ressure chemical ionization interface (LC/APCI/MS) is evaluated for the simultaneous determination of carbamate pesticides and organophosphorus pes-ticides in a single chromatographic analysis. APCI mass spectra of those compounds were obtained to study their ionization characteristics. APCI provided abundant ions such as protonated molecules and characteristic fragment ions for carbamate pesticides and organophosphorus pesticides. To evaluate the feasibility of the LC/APCl/MS for a routine quantitative analysis, the linearity and repeatability of LC/APCI/MS were examined by measuring standard solution mixtures of five carbamate pesticides and four organophosphorus pesticides over the range of l to 100 ㎍/mL. The peak areas in chromatograms of characteristic ions for those compounds showed less than 3% of variation from run to run. The standard calibration curves for the nine pesticides show good linearity in the concentration range. The detection liits of the LC/APCl/MS system for those compounds range from 0.006 to 0.2 ng.
Page	471 - 476
Full Text	PDF

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