简述分散液相微萃取技术

A review on the dispersive liquid-liquid microextraction

中文关键词:  分散液相微萃取  化学分析  食品安全  方法研究

英文关键词:dispersive liquid-liquid microextraction  chemical analysis  food safety  method research

中文摘要:

      现代化学分析要求分析过程简单、小型化、自动化, 尤其是快速处理样品。分散液相微萃取有助于满足这些要求, 它是最近发展起来的一种新型样品前处理技术, 具有操作简单、快速、成本低、试剂消耗少, 回收率和富集效率高等特点。分散液相微萃取可与高效液相、气相、原子吸收联用, 而且在食品安全分析中得到广泛应用。本文对分散液相微萃取的基本原理、萃取过程、影响因素(如萃取剂和分散剂的类型和体积、萃取时间和电解质)和目前在食品安全中的应用进行了评述。

英文摘要:

      One of the most important objectives of modern analytic chemistry is miniaturization, simpli?cation and automation of the whole analytic procedure, especially to speed up sample treatment. Dispersive liquid-liquid microextraction (DLLME) has greatly contributed to meet this objective, which is a technical method developed recently for sample-preparation , and is simple for operation, fast, and inexpensive, with a high enrichment factor and low consume of volume of organic solvent. DLLME coupled with high per-formance liquid chromatography (HPLC), gas chromatography (GC) and atomic absorption spectrometry (AAS) have been widely applied to the analysis for food safety. The basic principles, influence factors (e.g., types and volumes of extraction and disperser solvents, extraction time, and electrolyte) and the latest applications of DLLME in food safety area are reviewed.