Hajslová J, Cuhra P, Davídek T, Davídek J
Prague Institute of Chemical Technology, Department of Food Chemistry and Analysis, Czechoslovakia.
J Chromatogr. 1989 Oct 6;479(2):243-250. doi: 10.1016/s0021-9673(01)83340-9.
A sensitive and reproducible gas chromatographic procedure for the determination of diquat and paraquat in potatoes and rapeseed was developed. The volatilization of analytes was carried out via their hydrogenation with sodium borohydride-nickel(II) chloride. After their isolation from the reaction mixture, the derivatives of bipiperidine were separated on a column packed with Apiezon L plus potassium hydroxide. Comparable detection limits (0.005 mg/kg) were achieved with a nitrogen-phosphorus detector and by mass fragmentography, however, the latter method was preferred for analyses of rapeseed extracts owing to its higher selectivity.
建立了一种灵敏且可重复的气相色谱法，用于测定马铃薯和油菜籽中的敌草快和百草枯。通过用硼氢化钠 - 氯化镍（II）对分析物进行氢化来实现其挥发。从反应混合物中分离出来后，联哌啶衍生物在填充有阿皮松L加氢氧化钾的柱上进行分离。使用氮磷检测器和质量碎片分析法可获得相当的检测限（0.005 mg/kg），然而，由于其更高的选择性，后一种方法更适合用于油菜籽提取物的分析。
