高效液相色谱法同时测定水样中氟苯胺异构体和氯苯胺异构体

Simultaneous determination of the three isomers of fluoroaniline and three isomers of chloroaniline in water samples by HPLC

建立了分散液相微萃取-高效液相色谱法对水样中氟苯胺异构体和氯苯胺异构体同时测定的分析方法。实验中对物质的检测波长和洗脱方式进行了选择,确定最佳色谱条件,并对影响萃取效果的主要因素(萃取剂及分散剂的种类、萃取剂及分散剂的用量、体系pH和加盐量)进行了优化。在最佳的实验工作条件下,建立了六种组分的工作曲线,线性相关系数在0.9992~0.9998之间,线性范围达到103,样品加标平均回收率为91.7%~104%,相对标准偏差在2.7%~4.5%之间,检出限为0.3~1.0 ng·mL^(-1)(S/N=3)。

A DLLME-HPLC method was first established for the simultaneous detection of the three isomers of fluoroaniline and three isomers of chloroaniline in water samples.The detection wavelength and elution program of the substance were selected,so the optimal chromatographic conditions were determined.And the conditions(type of extractant and dispersant,amount of extractant and dispersant,pH of system and salt content)of dispersive liquid phase microextraction were optimized.Under the optimal conditions,good linearities were obtained for six components with correlation coefficients of 0.9992-0.9998,and the linear range is up to 103.The average recoveries of water samples were from 91.7%^(-1)04%with RSDs of 2.7%~4.5%.The detection limits(S/N=3)ranged from 0.3 to 1.0 ng·mL^(-1).