Determination of fluorescent whitening agent in emulsion paint based on fluorescence spectrophotometry

6th conference on Advances in Optoelectronics and Micro/nano-optics

Zhang, Lin^1 ; Zhao, Youlin^2

College of Science, Hohai University, Nanjing

211100, China^1

Business School, Hohai University, Nanjing

211100, China^2

关键词: Emission wavelength;    Excitation wavelength;    Fluorescence intensities;    Fluorescence spectrophotometry;    Fluorescent whitening agents;    Linear relationships;    Relative standard deviations;    Standard addition;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/844/1/012053/pdf
DOI  :  10.1088/1742-6596/844/1/012053

来源: IOP

【 摘 要 】

Fluorescence spectrophotometry was applied to the determination of fluorescent whitening agent in emulsion paint. At temperature of 30°C, linear relationship was found between fluorescence intensity and concentration of fluorescent whitening agent in the range of 0.025-0.25mg/ml when the emission wavelength was 437nm and excitation wavelength was 347nm, correlation conefficient was 0.998, detection limit was 0.0007mg/ml, relative standard deviation ranged from 0.49% to 0.72%, recovery of standard addition ranged from 98.3% to 104.5%. The influence of storage time and exposure time were also studied here. Measurement results indicated the feasibility and precision of using this method for quantitative analysis of fluorescent whitening agent.