离子液体及聚离子液体在基于固相萃取技术的食品安全分析中的应用

摘要

由于食品样品多样性和复杂性,样品前处理成为食品安全分析的关键.固相萃取技术是食品安全分析中富集痕量组分、分离干扰物质的重要前处理方法.将具有特殊物理化学性质的离子液体及聚离子液体,应用于固相微萃取、基质固相分散萃取、分子印迹固相萃取、整体柱固相萃取等固相萃取技术中,改善了固相吸附剂性能,提高了固相萃取效率,实现了对食品样本中重金属离子、农兽药残留、违规或超标添加剂等的高效富集、分离,合并其他分离分析方法,达到了准确测定这些物质的含量的目的.离子液体及聚离子液体在食品分析的前处理中的应用将越来越广泛.%Due to the multiplicity and complexity of food matrices,sample pretreatment is the key in food safety analsis.Solid-phase extraction is used to enrich the trace elements and separate the interference in food safety analysis.Characterized with special physico-chemical properties,ionic liquids and poly ionic liquids widely used in solidphase extraction technique,such as,solid-phase micro-extraction,matrix solid-phase dispersion extraction,molecular imprinted solid-phase extraction and monolith solid-phase extraction to increase the capacity of solid-phase absorbent and efficiency,enhanced the solid-phase extraction.Therefore,the trace ingredient of heavy metal ion residues in pesticide,drugs,illegal or excess additives were able to enrich and separate and detected.The ionic liquids and poly ionic liquids may be widely used in the future.