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KMID : 1023520020250010023
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Korean Journal of Veterinary Service
2002 Volume.25 No. 1 p.23 ~ p.29
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Confirmation of carbamate pesticides by liquid chromatography coupled with electrospray ionization mass spectrometry
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Bark Jun-Jo
Gum Mo-Rae
Koh Kwahng-Choon
Park Byoung-Ok
Lee Sung-Sik
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Abstract
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A method was developed to separate, detect and qualify aldicarb, bendiocarb, carbaryl, carbofuran, ethiofencarb, methomyl, methiocarb, propoxur in meats and fruits. Experimental beef and fork samples were fortified with 0.05mg/kg of carbamate pesticides for analysis. Carbamate-detected pear by HPLC fluorescence detector(HPLC/FLS) are extracted with acetonitril and refined by solid phase extraction(SPE) filled with aminopropyl-bonded silca, In the following step, the injected materials into LC/MS are analyzed to result in the fact that bendiocarb, carbaryl, carbofuran, ethiofencarb, methomyl, methiocarb, propoxur presents several sorts of fraction ions following with; [M+H], [M+Na],［M-CONH], [M-OCONH]. In addition, ethiofencarb presents [M-SCH] ion distinctive and aldicarb presents [M+Na] and [M-OCONH] ion which is the most decisive fraction ion for pesticides such as bendiocarb, carbaryl, carbofuran, ethiofencarb, methiocarb, methomyl, propoxur excluding [M+H] ion. However, [M-OCONH] and [M-OCONH] fraction ion charactering carbamate pesticides are detected most efficiently with fragment voltage 50ev. As a result, for rluantitative analysis, [M+Na] ion is the most decisive ion for detection of aldicarb and [M+H] ion is the most decisive fraction ion for Pesticides such as bendiocarb, carbaryl, carbofuran, ethiofencarb, methiocarb, methomyl, propoxur. Carbaryl-detected pear by HPLC/FLS are analyzed by L/MS and the result shows that [M+H] and [M-CONH] ions charactering carbaryl are detected.ering carbaryl are detected.
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KEYWORD
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Carbamate pesticides, Electrospray ionization Mass spectrometry, Fraction ion
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