兽药残留分析中样品前处理技术研究进展

样品前处理是兽药残留分析中的关键步骤,直接影响检测的结果.近年来,出现了一些新的样品前处理技术,如固相萃取、基质固相分散萃取、固相微萃取、搅拌棒吸附萃取、膜萃取、液相微萃取、超临界流体萃取、加速溶剂萃取、分子印迹、微波辅助萃取.这些技术能够有效地减少分析过程中由样品前处理过程带来的误差,具有前处理快速、简便的优点,同时可与分析仪器联用,实现分析的自动化.本文对这些新技术的基本原理、特点及在兽药残留分析中的应用进行了综述,并对样品前处理的前景进行了展望.

Progress of Sample Pre-treatment in Analysis of Veterinary Drug Residues

Sample pre-treatment is the key process of veterinary drug residue analysis.There are some newly developed techniques such as solid phase extraction,matrix solid-phase dispersion,solid-phase microrxtraction,supercrifieal fluid extraction,str bar sorptive extraction,membrane extraction,liquid-phase microrxtraction,pressurized liquid extraction,immnuoaffinity chromatography,and microwave-assistant solvent extraction to appear. These techniques can reduce error in sample treatment and make the sample preparati...