三元络合物分光光度法测定锶  

Spectrephotometric determination of trace strontium in termary complex

作　　者：李荣勤[1] 

机构地区：[1]齐齐哈尔大学化学与化学工程学院,齐齐哈尔161006

出　　处：《齐齐哈尔大学学报（自然科学版）》2006年第5期35-37,共3页Journal of Qiqihar University(Natural Science Edition)

摘　　要：本文研究了在聚乙烯醇存在下，锶与碘化钾和罗丹明B形成三元缔合物的高灵敏显色反应。以摩尔比法测定缔合物中摩尔比Sr：I：RB=1：4：2，缔合物水溶液的最大吸收波长为560nm，摩尔吸光系数为ε=2．42×10^6L／mol.cm，方法简便，快速，灵敏度高。Sr（Ⅱ）含量在0-10μg／25ml范同内符合Beer s定律。同时，详细研究了反应条件。并作了水中锶的回收实验。操作简便、快速、结果令人满意。This deals with the high-sensitivity color reaction of Sr as theproduct of with Antimony KI and Rodamine B.under condition of polyvinyl alcohol.The determination results of Sr were obtained through the method of continuous chang of equal mole. Moar ratio of Sr：I：RB is 1：4：2 λ oftheproduct is 560nm. The molar absorptivity is2.42 × 10^6 L/mol.cm.Theamount of Srvaries in the range of 0-10ug/25mland is in accordance with Beer＇ s Law.The condition of the color reaction and the interference of foreign ions were studied in detail The recovery experiment of Antimony in water was carried out easily and quickly Theresults are satisfactory.

关 键 词：锶 罗丹明B 分光光度法 

分 类 号：O657.32[理学—分析化学]