Cox C L, Timmons L L, Ridlen R L
Midwest Research Institute, Kansas City, Missouri 64110.
J Anal Toxicol. 1989 Mar-Apr;13(2):84-8. doi: 10.1093/jat/13.2.84.
A method was developed for the analysis of trichlorfon as the intact molecule from feed formulations of the chemical. The method involved isolation of trichlorfon by a simple extraction procedure. Subsequent detection and quantitation of the trichlorfon was by gas chromatography with a DB-1 fused-silica wide-bore capillary column and flame photometric detection. Automated on-column injections were performed. The method was linear in the range 5-75 ng injected on-column and had an average recovery of 86%. The limit of detection for trichlorfon in feed was 1 ppm. The applicability of the method was tested by determining the stability of trichlorfon over a 21-day period in a feed blend of trichlorfon at the 50-ppm concentration level. Mass spectrometric analyses were performed to confirm that trichlorfon could be quantitated as the intact molecule.
已开发出一种方法，用于分析化学物质敌百虫饲料配方中的完整分子形式的敌百虫。该方法包括通过简单的萃取程序分离敌百虫。随后，使用DB - 1熔融石英宽口径毛细管柱和火焰光度检测的气相色谱法对敌百虫进行检测和定量。采用自动柱上进样。该方法在柱上进样5 - 75 ng范围内呈线性，平均回收率为86%。饲料中敌百虫的检测限为1 ppm。通过测定50 ppm浓度水平的敌百虫饲料混合物中敌百虫在21天内的稳定性，测试了该方法的适用性。进行质谱分析以确认敌百虫可以作为完整分子进行定量。
