Trace analysis of triasulfuron and bensulfuron-methyl in water samples using a carbon nanotubes packed cartridge in combination with high-performance liquid chromatography

摘要

This paper describes a simple,rapid and sensitive method for the determination of triasulfuron and bensulfuron-methyl using a multi -walled carbon nanotube-packed cartridge as the preconcentration step prior to analysis by high-performance liquid chromatography.The experimental results indicate an excellent linear correlation between the peak area and the concentration for triasulfuron and bensulfuron-methyl over the concentration range of 0.08-80 and 0.04-40 ng centre dot mL~(-1),and the correlation coefficients are 99.93 and 99.38%,respectively.The detection limits are 22.4 and 2.9 ng centre dot L~(-1) based on the signal being three times the baseline noise (S/N = 3).The precision of the method is satisfactory at a very low level,and the relative standard deviations (RSD) are 2.6 and 4.8% in - 6),respectively.Satisfactory recoveries were achieved with spiked real water samples,inferring that the established method can be applied to real sample analysis.