Method for determining methamidophos in rice wine
一种测定方法、中甲胺的技术,应用在测量装置、仪器、科学仪器等方向,能够解决影响残留分析定量准确性、回收率低等问题,达到解决难以产生有效保留、回收率高、前处理操作简便易行的效果
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[0073] A detailed description will be given below of specific embodiments of the present invention.
[0074] 1.1 Method summary
[0075] Methamidophos in yellow rice wine was extracted by Easy solid-phase extraction column and eluted with ethyl acetate, and then determined by gas chromatography-flame photometric detector (GC-FPD) for positive screening and quantification, using liquid chromatography-tandem Mass spectrometry (LC-MS-MS) was used for qualitative confirmation of positive samples.
[0076] 1.2 Reagent materials
[0077] 1.2.1 Acetone and ethyl acetate are pesticide residue grade reagents; water is ultrapure water (resistivity 18.2MΩ);
[0078] 1.2.2Easy solid phase extraction cartridge: 500mg / 3mL, Germany MN company;
[0079] 1.2.3T3 liquid chromatography column: length 100mm, inner diameter 2.1mm, filler particle size 3.0μm.
[0080] 1.2.4 Methamidophos standard stock solution: 100 μg / mL (Environmental Protection Research and Monitoring Institute of the Minist...
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