1. Highly Sensitive Detection of Gallic Acid in Food Samples by Using Robust NiAl2O4 Nanocomposite Materials.
- Author
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Sivakumar, Mani, Pandi, Karuppiah, Shen-Ming Chen, Yadav, Sudesh, Tse-Wei Chen, and Veeramani, Vediyappan
- Subjects
GALLIC acid ,CHEMICAL synthesis ,NANOSTRUCTURED materials - Abstract
We have successfully synthesized nanostructured cubic NiAl
2 O4 nanoparticles for the selective electrochemical determination of gallic acid (GA) and the prepared nanostructured composite material was characterized by (X-ray diffraction, Fourier transform infrared spectroscopy, and field-emission scanning electron microscopy analyses. The cubic NiAl2 O4 nanoparticles had average sizes of ~ 26-30 nm as calculated from XRD and SEM measurements, respectively. GA-detection performance was also evaluated by cyclic voltammetry and amperometry method. NiAl2O4 glassy carbon electrode showed excellent performance in GA detection with a linear range, detection limit (SNR = 3 sb/S), limit of quantitation (LOQ = 10 sd/S) and sensitivity value of 0.03-551.18 μM, 0.018 μM, 0.057 μM and 9.019 μM mA-1 cm-2 , respectively. The GA sensor was also used in real-sample analysis using food samples, and results showed the practicability of the proposed sensor. [ABSTRACT FROM AUTHOR]- Published
- 2019
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