新型螯合纤维在痕量金属离子的预富集测定中应用

摘要

螯合纤维对金属离子具有很强的吸附性和高的选择性,可以用于光谱检测的样品前处理.近年来,利用螯合纤维与光谱法联用进行痕量金属离子预富集、分离和检测的方法已成为研究热点之一.为了提高螯合纤维的吸附性和选择性,出现了多种新型结构的螯合纤维.本文就20世纪90年代以来出现的新型结构螯合纤维对不同金属离子的选择性和吸附性以及采用螯合纤维与光谱法联用对不同金属离子的预富集和分离检测的方法进行了综述,为工业废水、天然矿物和天然水等样品中金属离子预富集和检测方法的研究提供基础.%The chelate fiber had strong adsorbability and high selectivity to metal ions, and could be used in the pretreatment of sample for spectral detection. In recent years, the combination of chelate fiber and spectral analysis for the preconcentraiton, separation and detection had been paid much attention. In order to enhance the adsorbability and selectivity, many novel chelate fibers with different structures were developed. In this paper, the adsorbability and selectivity of novel chelate fibers developed since 1990s to various metal ions and the preconcentraiton, separation and detection methods of various metal ions by the combination of chelate fiber and spectral analysis were reviewed. It provided basis for the research of preconcentraiton and detection methods of metal ions in industrial wastewater, natural mineral and natural water samples.