Fan D F, Ge S D
J Assoc Off Anal Chem. 1982 Nov;65(6):1517-20.
A specific method is described for the alkali flame ionization gas-liquid chromatographic determination of chlordimeform (N'-(4-chloro-o-tolyl)-N,N-dimethylformamidine) and 3 potential metabolites in cargo rice and husk. Samples are extracted with absolute alcohol or hexane, and cleaned up on neutral alumina columns. Residues of chlordimeform and its metabolites are chromatographed directly on a column of 1% DEGS coated on 60-80 mesh 405 support (PEG 20M bonded phase). The detection limits for chlordimeform, 4-chloro-o-toluidine, 2,2'-dimethyl-4,4'-dichloroazobenzene, and N-formyl-(4-chloro-o-toluidine) are 0.03, 0.028, 0.11, and 0.43 ppm for cargo rice and 0.03, 0.028, 0.22 and 0.43 ppm for husk, respectively.
介绍了一种用于碱火焰离子化气液色谱法测定大米和稻壳中杀虫脒（N'-（4-氯-邻甲苯基）-N，N-二甲基甲脒）及其3种潜在代谢物的具体方法。样品用无水乙醇或己烷提取，并在中性氧化铝柱上净化。杀虫脒及其代谢物的残留物直接在涂有1%DEGS的60 - 80目405载体（PEG 20M键合相）柱上进行色谱分析。大米中杀虫脒、4-氯-邻甲苯胺、2,2'-二甲基-4,4'-二氯偶氮苯和N-甲酰基-（4-氯-邻甲苯胺）的检测限分别为0.03、0.028、0.11和0.43 ppm，稻壳中的检测限分别为0.03、0.028、0.22和0.43 ppm。
