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环境样品中农药残留物的分析是很困难的,因为通常含量很低并且样品是十分复杂的混合物。因此,为了得到可靠的数据,要求所采用的分析方法应具有足够的分辨率、灵敏度和选择性。 在过去十多年中,为了解决环境分析课题,发展了许多新方法和新技术,其中色谱质谱联用(GC-MS)和液相色谱质谱联用(LC-MS)以及数据系统,是最重要的方法,它在农药残留物分析中得到了广泛的应用。Safe和Huzinger在其专著中以及文献中详细报导了有机磷农药的电子轰击源质谱(EI-MS),它含有大量的碎片峰,分子离子峰(M~+)
Analysis of pesticide residues in environmental samples is very difficult because of the low levels and the intricacies of the sample. Therefore, in order to obtain reliable data, the analytical methods required should have sufficient resolution, sensitivity and selectivity. In the past decade or so, many new methods and technologies have been developed to solve environmental problems. Among them, GC-MS, LC-MS and data systems are the most important Important method, it has been widely used in pesticide residue analysis. Safe and Huzinger reported in detail in their monographs and in the literature electronic ionization mass spectrometry (EI-MS) of organophosphorus pesticides, which contains a large number of fragment peaks, molecular ion peaks (M ~ +)