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    Home > Agriculture News > Pesticide News > Shimadzu application: MDGC/GCMS method for the detection of organophosphorus pesticides in complex matrix samples

    Shimadzu application: MDGC/GCMS method for the detection of organophosphorus pesticides in complex matrix samples

    • Last Update: 2022-03-17
    • Source: Internet
    • Author: User
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    The problem of pesticide residues in vegetables is related to the health of the masses of people, and is receiving more and more attention
    .
    In today's world, pesticide residue analysis is developing towards multi-residue and rapid analysis.
    To ensure the accuracy of high-throughput detection methods, strict pesticide residue confirmation techniques are required

    .
    ???? At present, the Ministry of Agriculture's routine monitoring of multiple residues of organophosphorus pesticides in vegetables implements the agricultural standard NY/T761-2008 "Determination of Multi-residues of Organochlorine, Organophosphorus, Pyrethroid and Carbamate Pesticides in Vegetables and Fruits", Use GC/FPD to quickly detect vegetable organophosphorus pesticide residues.
    For samples that exceed the standard or are close to the limit value, use double-column and double FPD to re-test, and then use GCMS to determine if it still cannot be confirmed, so that the detection of pesticide residues in vegetables is faster and more accurate

    .
    Green leafy vegetables, cabbage, melons, nightshade, beans, potato taro and root vegetables have almost no sample impurity peaks, and the determination of organophosphorus pesticides is not disturbed; cabbage vegetables (such as purple cabbage, cabbage and broccoli) Etc.
    ) There are significant impurity peaks in samples, and the determination of dichlorvos, methamidophos, phorate and chlorpyrifos methyl is often interfered; especially onion and garlic vegetables (such as garlic, onions, etc.
    ) have strong impurity peaks in samples, organic Phosphorus pesticides are multi-residue? The determination cannot be carried out

    .
    ????Shimadzu multidimensional gas chromatography-mass spectrometer???? This article uses Shimadzu heart-cutting two-dimensional gas chromatography mass spectrometry MDGC/GCMS to analyze 29 kinds of organophosphorus pesticides in onion and garlic, which can effectively solve the problem.
    Background interference issues

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