食品中限量元素分析样品的预处理技术进展

Roview on Sample Preparation Technigues and Trend for Analyzing the Limited Trace Elements in Food Stuffs

本文综述了近年来食品中限量元素分析的样品前处理技术,重点对密封罐消解(包括普通电烘箱密封罐消解及微波消解技术)在食品农药限量元素分析中的应用进行了评述;同时对常规样品预处理技术(高温灰化、湿法消化)、低温灰化技术、酸提取技术及分离富集技术应用进行了总结,对食品中限量元素分析预技术发展方向进行了讨论。

The progress on sample preparation techniques for analyzing the limited trace elements in food-stuffs was reviewed.The applications of the high pressure digestion (HPD), microwave digestion (MD), routine preparation techniques such asashing and digestion, low-temperature ashing, acid extraction and pre-concentration complexing extraction, ion exchange resin,chelating resin for the analysis of limited trace elements in food-stuffs were reviewed. Special attention was given to microwavedigestion technique and its hyphenation with AAS, ICP-AES, AFS. The devoloping trend of the sample preparation techniquesfor analysis of the limited trace elements was also discussed.