Abstract
稳定同位素分析是分析化学一项颇具前景的分支,通过精确测定物质的稳定同位素比值,可以追溯物质来源并探究其转化过程。高精度稳定同位素分析技术的进步依赖于新一代质谱仪的不断发展。其中,多接收器电感耦合等离子体质谱(MC-ICP-MS)是近年发展迅速的一种同位素组成测定工具。稳定同位素分析对样品基质十分敏感,复杂基质能严重干扰同位素测定的精密度和准确度。这对MC-ICP-MS的样品净化提出了极高要求,目前也是同位素分析领域的热点问题。该文聚焦于近年来MC-ICP-MS在样品净化及仪器联用方法方面的相关研究进展,并展望了MC-ICP-MS稳定同位素分析的应用前景。
Highlights
第 39 卷 many organic reagents and is time consuming
The sampling volumes in the SIP⁃PAS and PUF⁃PAS methods ( - 6 m3 ) calculated from the log KOA value of HCBD have significant uncertainty, and this must be confirmed in the future
A micro SPE method using functionalized polysulfone membranes as sorbents and employing ultrasonic desorption was developed for extracting HCBD from drinking water
Summary
第 39 卷 many organic reagents and is time consuming. The accelerated solvent extraction ( ASE ) method requires a small amount of organic reagent, and the extraction can be performed rapidly. The sampling volumes in the SIP⁃PAS and PUF⁃PAS methods ( - 6 m3 ) calculated from the log KOA value of HCBD have significant uncertainty, and this must be confirmed in the future.
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