Analytical method for the determination of O,O-diethyl phosphate and O,O-diethyl thiophosphate in faecal samples
作者:Detlef Schenke
DOI:10.1016/s0045-6535(00)00020-5
日期:2000.11
A residue analytical method was developed for the determination of the dialkylphosphate metabolites of parathion in faecal samples obtained from rabbits. The faecal pieces were homogenised in water and highly water-soluble O,O-diethyl phosphate (DEP) and O,O-diethyl thiophosphate (DETP) were subsequently alkylated to pentafluorobenzyl esters by a phase transfer reaction. Derivatisation yields depend
建立了一种残留分析方法,用于测定从兔子获得的粪便样品中对硫磷的二烷基磷酸酯代谢物。将粪便在水中均质化,然后通过相转移反应将高度水溶性的O,O-二乙基磷酸酯(DEP)和O,O-二乙基硫代磷酸酯(DETP)烷基化为五氟苄基酯。衍生化产率取决于反应时间。使用基质溶液中的可靠参考标准物在整个过程中确定回收率。使用GC-FPD时,参考标准可以观察样品基质对信号区域的影响。在0.05至5微克/克的浓度范围内,采用FPD的O,O-二乙基磷酸钾的回收率为47-62%,O,O-二乙基硫代磷酸钾盐的回收率为92-106%。