新型可溶固定相分离法研究——光度法测定水中痕量铁(Ⅱ)  

Investigation of a New Seperation Method Using Soluble Stationary Phase

作　　者：陈颖[1] 谷学新[1] 李志强[1] 王淑英[1] 周天泽[1] 

机构地区：[1]首都师范大学化学系

出　　处：《分析试验室》1999年第2期27-30,共4页Chinese Journal of Analysis Laboratory

基　　金：北京市自然科学基金

摘　　要：以硝酸纤维素粉末为固定相，以乙二醇独甲醚为溶剂，处理Ｆｅ（Ⅱ）－ｐｈｅｎ－ＤＳ三元离子缔合型络合物体系，提出了一种新型可溶固定相分离方法。该法简便、快速，富集倍数高达１００。本文探讨了固定相的分离条件——固定相粉末用量、颗粒度、柱径等对富集的影响，并对反应的酸度、试剂用量、方法的灵敏度、选择性等作了讨论。A solvent soluble stationary phase, which is composed of nitrocellulose powder has been proposed for simple and rapid preconcentration. In this paper, the conditions of separation , the effects of amount of nitrocellulose powder,size of powder and diameter of column on the separation were studied spectrophotometrically in detail by using the ternary complex Fe(Ⅱ) phen DS.The effect of acidity and amount of reagent, the sensitivity and selectivity have been described. Detection limits better than 0.1 μg/L of Fe(Ⅱ) can be achieved with a 100 fold enrichment factor

关 键 词：可溶固定相 天然水 铁 光度法 测定 水分析 

分 类 号：O661.1[理学—分析化学] O614.811[理学—化学]