A molecular assembly of piperidine carboxylic acid dithiocarbamate on gold nanoparticles for the selective and sensitive detection of Al3+ ion in water samples
作者： Vaibhavkumar N. Mehta , Rakesh Kumar Singhal , Suresh Kumar Kailasa
DOI: 10.1039/C5RA00003C
关键词: Dithiocarbamate 、 Colloidal gold 、 Absorbance 、 Carboxylic acid 、 Metal ions in aqueous solution 、 Surface plasmon resonance 、 Chemistry 、 Ion 、 Spectrophotometry 、 Inorganic chemistry
摘要: A sensitive and selective colorimetric method has been developed for the detection of Al3+ ions using 4-piperidine carboxylic acid dithiocarbamate-functionalized gold nanoparticles (PCA-DTC-Au NPs) as a probe. high degree PCA-DTC-Au NP aggregation was observed following addition ion in presence 0.4 M NaCl Tris–HCl buffer at pH 6.0. The effectively induced NPs, resulting color change from red to blue. characteristic surface plasmon resonance (SPR) peak NPs red-shifted 660 nm. ion-induced monitored by UV-visible spectrophotometry. absorbance ratio (A660 nm/A523 nm) linear concentrations within range 0.01–100 μM, with correlation coefficient R2 = 0.997. probe free interference due other metal extremely specific towards ion. applicability present practical samples studied determining spiked water (drinking, tap, canal river water) containing known
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