Progress in Research and Application of Needle Trap Microextraction Technology
With the improvement of detection demand and the development of analytical technique,the micro-sample pretreatment technology with simplicity,automation,environmental friendliness and miniaturization has attracted more and more attention.Needle trap microextraction(NTME)is a new microextraction technology developed based on solid phase microextraction(SPME).Its extraction device is prepared with the adsorbent packed into the stainless steel needle,which can avoid the problem of fiber fragility and coating loss in the SPME.Moreover,the analytes can be extracted thoroughly by dynamic extraction in NTME,which has better durability and enrichment ability.In recent years,NTME combined with gas chromatography has been widely used to analyze volatile and semi-volatile organic pollutants,and many studies on NTME have been reported.Adsorbents are the core factors affecting the extraction performance of NTME.This paper briefly summarizes the types of adsorbents for NTME developed in recent years and outlines the progress of their applications in the fields of environment,food,and biology.
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