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近年来,利用巯基及它种螯合基纤维素富集测定多种微量元素的研究报导较多,但将螯合基团接在合成纤维上作为富集剂的报导尚少。我们曾用腈纶为原料合成聚丙烯酰胺肟-羧酸螯合纤维富集测定过数种微量元素。本文较系统地研究了该螯合纤维对30余种微量元素的定量富集酸度、吸附速度、洗脱酸度、饱和吸附量和共存离子的干扰,讨论了螯合纤维的稳定性、耐酸碱性、再生使用和富集机理,并进行了低浓度元素的富集和样品分析。实验表明,该螯合纤维是一种良好的高分子富集剂,它可以定量富集多种微量元素,具
In recent years, the use of mercapto and its chelated cellulose enrichment determination of trace elements in many studies, but the chelating groups attached to the synthetic fibers as a collector less. We have used acrylic fiber as raw material to synthesize polyacrylamide oxime-carboxylic acid chelate fiber to determine the concentration of several trace elements. This paper systematically studied the chelating fiber on the quantitative enrichment of more than 30 kinds of trace elements of the acidity, adsorption rate, acidity, adsorption capacity and coexistence of ions interference, discussed the stability of the chelate fiber, acid and alkali Sexual, recycling and enrichment mechanism, and enrichment of low concentrations of elements and sample analysis. Experiments show that the chelating fiber is a good polymer enrichment agent, which can quantitatively enrich a variety of trace elements, with