SIMULTANEOUS DETERMINATION OF PROTOCATECHUIC ALDEHYDE AND PROTOCATECHUIC ACID USING THE LOCALIZED SURFACE PLASMON RESONANCE PEAK OF SILVER NANOPARTICLES AND CHEMOMETRIC METHODS

Química Nova

Javad Khodaveisi¹  Ali Mohammad Haji Shabani¹  Shayessteh Dadfarnia¹  Masoud Rohani Moghadam¹  Mohammad Reza Hormozi-nezhad¹ 

关键词: protocatechuic aldehyde;    protocatechuic acid;    chemometric methods;   

DOI  :  10.5935/0100-4042.20150084

来源: SciELO

【 摘 要 】

A simple and sensitive spectrophotometric method is proposed for the simultaneous determination of protocatechuic acid and protocatechuic aldehyde. The method is based on the difference in the kinetic rates of the reactions of analytes with [Ag(NH3)2]+ in the presence of polyvinylpyrrolidone to produce silver nanoparticles. The data obtained were processed by chemometric methods using principal component analysis artificial neural network and partial least squares. Excellent linearity was obtained in the concentration ranges of 1.23-58.56 µg mL-1 and 0.08-30.39 µg mL-1 for PAC and PAH, respectively. The limits of detection for PAC and PAH were 0.039 and 0.025 µg mL-1, respectively.

【 授权许可】

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