Studies on Photochemical Fluorimetric Method(Ⅷ)——Wave Scanning-Differential Rate Method

Abstract

Abstract: The present paper deals with a differential rate kinetic photochemical fluorimetric technique,wave scanning-differential rate method,for simultaneous determination of two compounds.The principle for this method as well as the experimental technique by which the in situ photochemical fluorimetry is able to carry out by use of commercial fluorescence spectropho-tometer is described.A wave scanning-differential rate method for the simultaneous determination of riboflavin and menadione based on their photochemical reaction,used as an example of this technique,is proposed,The calibration graph was rectilinear from 0.0 ng/mLto 1.20μg/mLfor riboflavin (r=0.999) and from 0.0 ng/mL to 2.70 /ng/mL for menadione (r=0.998).The limits of detection were 0.22 ng/mL riboflavin and 2.6 ng/mLmenadione.The average recoveries were 101% and 99%,respectively.The standard deviations were 2.5% for riboflavin and 2.8% for menadione

Key words: Photochemical reaction, Fluorimetry, Riboflavin, Menadione, Differential rate method

TrendMD:

GUO Xiang-Qun, XU Jin-Gou, ZHAO Yi-Bing, CHEN Guo-Zhen. Studies on Photochemical Fluorimetric Method(Ⅷ)——Wave Scanning-Differential Rate Method[J]. Chem. J. Chinese Universities, 1992, 13(10): 1225.

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Studies on Photochemical Fluorimetric Method(Ⅷ)——Wave Scanning-Differential Rate Method

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