Selective detection of tricyclazole by optical technique using thiomalic acid-modified Au and Ag nanoparticle mixtures.
J Food Drug Anal
; 31(2): 302-314, 2023 06 15.
Article
em En
| MEDLINE
| ID: mdl-37335162
This study proposes the use of thiomalic acid-modified Au and Ag nanoparticle mixtures (TMA-Au/AgNP mixes) for the selective detection of tricyclazole. Upon the addition of tricyclazole, the color of TMA-Au/AgNP mixes solution changes from orange-red to lavender (red-shift). According to the density-functional theory calculations, tricyclazole-induced aggregation of TMA-Au/AgNP mixes through electron donor-acceptor interactions was proved. The sensitivity and selectivity of the proposed method are affected by the amount of TMA, volume ratio of TMA-AuNPs to TMA-AgNPs, pH value, and buffer concentration. The ratio of absorbance (A654/A520) of TMA-Au/AgNP mixes solution is proportional to the concentration of tricyclazole over the range 0.1-0.5 ppm with a linear correlation (R2 = 0.948). Moreover, the limit of detection was estimated at 0.028 ppm. The practicality of TMA-Au/AgNP mixes was validated for the determination of tricyclazole concentration in real samples (spiked recovery was 97.5%-105.2%), demonstrating its advantages of simplicity, selectivity, and sensitivity.
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Nanopartículas Metálicas
Tipo de estudo:
Diagnostic_studies
Idioma:
En
Ano de publicação:
2023
Tipo de documento:
Article