催化动力学荧光法测定水中氟  

Determination of Fluoride in Water with Catalytic Spectrofluorimetry

作　　者：李志英[1] 池中艳[1] 

机构地区：[1]忻州师范学院化学系,山西忻州034000

出　　处：《分析科学学报》2012年第6期880-882,共3页Journal of Analytical Science

基　　金：山西省高校科技开发项目(No.20111023);忻州师范学院基金(201002)

摘　　要：在酸性条件下,游离的F-对高碘酸钾氧化罗丹明B的反应具有催化作用,可使罗丹明B的荧光减弱。基于此,建立了测定微量F-的催化动力学荧光光度分析新方法。结果表明:溶液的荧光激发波长和发射波长分别为562nm、582nm,测定的线性范围是0.04～2.6μg/mL,检出限是0.032μg/mL,并已用于水中微量F-的测定。A new catalytic spectrofluorimetric method for the determination of trace fluorion based on the catalytic effect of the fluorion on the oxidation of Rhodamine B by potassium periodate in acid medium was reported. The fluorescence excitation wavelength and emission wavelength were 562 nm and 582 nm,the linear range was 0.04-2.6 ug/mL,and the detection limit was 0. 032 ug/mL,respectively. The method has been applied to the determination of trace fluoride in water samples with satisfactory results.

关 键 词：催化动力学荧光光度法 氟 高碘酸钾 罗丹明B 

分 类 号：O657.39[理学—分析化学]