碘的质谱测量方法研究进展

Research Progress of Mass Spectrometry Methods for Iodine

近年来,电感耦合等离子体质谱(ICP-MS)技术的发展着力于应对基质更加复杂的样品和解决测量过程中的干扰问题,同时与进样、分离系统的联用技术也在快速发展,而加速器质谱(AMS)则朝着更加小型化和更高灵敏度的方向发展。ICP-MS测量前需要对样品进行前处理以消解和提取碘,而AMS测量前则还需对样品进一步分离富集和纯化。本文总结了ICP-MS和AMS的发展概况及其在碘测量方面的应用,归纳了ICP-MS和AMS测量含碘样品的前处理方法,综述了国内外总碘、碘同位素及碘形态的质谱测量方法新进展。

Combining the characteristics of iodine,the research progress of iodine mass spectrometry methods was reviewed.In recent years,the development of inductively coupled plasma mass spectrometry(ICP-MS)technology has focused on coping with more complex samples and solving interference problems in the measurement process.At the same time,the technology of coupling with the sampling and separation system is also continuously developing.And accelerator mass spectrometry(AMS)is moving towards more miniaturization and higher sensitivity.Before ICP-MS measurement,the sample needs to be pre-treated to digest and extract iodine.The sample preparation methods mainly include alkaline extraction,acid digestion,thermal hydrolysis,dry ashing,combustion method and integrated means combined with microwave assistance.In addition to digestion and iodine extraction of the sample before AMS measurement,further separation,enrichment and purification are required.The main methods include solvent extraction,ion exchange chromatography,AgI direct precipitation,AgI-AgCl co-precipitation and so on.This paper summarized the development of ICP-MS and AMS and their applications in iodine measurement,and sorted out the pretreatment methods of iodine-containing samples used for ICP-MS and AMS measurement.Finally,the latest developments in mass spectrometry methods for total iodine,iodine isotopes and speciation of iodine at home and abroad were reviewed.