在聚乙烯醇存在下,Sb(Ⅲ)-I^--RB的超高灵敏显色反应的研究  

Study on the High-Sensitivity Color Reaction of Sb(Ⅲ)- 1^- -RB under Condition of Polyvinyl Alcohol

作　　者：张舵[1] 李荣勤[1] 王恺[1] 

机构地区：[1]齐齐哈尔大学,齐齐哈尔161006

出　　处：《齐齐哈尔大学学报（自然科学版）》2003年第4期29-31,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,锑与碘化钾和罗丹明B形成三缔合物的超高灵敏显色反应。以等摩尔连续变化法测定缔合物中摩尔比Sb元:RB=1:2。缔合物水溶液的最大吸收波长为605nm,摩尔吸光系数为6.24×10~6L/mol·cm。方法的灵敏度很高,Sb(Ⅲ)含量在0-0.6μg/ml范围内符合Beer's定律。同时详细研究了反应条件,并作了水中锑的回收实验。操作简便、快速、结果令人满意。This deals with the high-sensitivity color reaction of Sb_(Ⅲ) as the product of the reaction of with Antimony KI and Rodamine B. under condition of polyvinyl alcohol. The determination results of Sb_(Ⅲ) were obtained through the mithod of continuous change of equal mole. Molar ratio of Sb:RB is 1:2. λ_(max) of the product is 605nm.The molar absorptivity is 6.24×10^(-6)L·mol^(-1)·cm^(-1). The amount of Sb_(Ⅲ) varies in the range of0-15 μg/25ml and 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. The results are satisfactory.

关 键 词：锑 罗丹明B 分光光度法 

分 类 号：O655.29[理学—分析化学]