MilliporeSigma
  • Home
  • Search Results
  • Colorimetric detection of Bi (III) in water and drug samples using pyridine-2,6-dicarboxylic acid modified silver nanoparticles.

Colorimetric detection of Bi (III) in water and drug samples using pyridine-2,6-dicarboxylic acid modified silver nanoparticles.

Spectrochimica acta. Part A, Molecular and biomolecular spectroscopy (2015-04-29)
Somayeh Mohammadi, Gholamreza Khayatian
ABSTRACT

A new selective, simple, fast and sensitive method is developed for sensing assay of Bi (III) using pyridine-2,6-dicarboxylic acid or dipicolinic acid (DPA) modified silver nanoparticles (DPA-AgNPs). Silver nanoparticles (AgNPs) were synthesized by reducing silver nitrate (AgNO3) with sodium borohydride (NaBH4) in the presence of DPA. Bismuth detection is based on color change of nanoparticle solution from yellow to red that is induced in the presence of Bi (III). Aggregation of DPA-AgNPs has been confirmed with UV-vis absorption spectra and transmission electron microscopy (TEM) images. Under the optimized conditions, a good linear relationship (correlation coefficient r=0.995) is obtained between the absorbance ratio (A525/A390) and the concentration of Bi (III) in the 0.40-8.00 μM range. This colorimetric probe allows Bi (III) to be rapidly quantified with a 0.01 μM limit of detection. The present method successfully applied to determine bismuth in real water and drug samples. Recoveries of water samples were in the range of 91.2-99.6%.

MATERIALS
Product Number
Brand
Product Description

Sigma-Aldrich
Sodium borohydride, ReagentPlus®, 99%
Sigma-Aldrich
Sodium borohydride, purum p.a., ≥96% (gas-volumetric)
Sigma-Aldrich
Sodium borohydride, granular, 99.99% trace metals basis
Sigma-Aldrich
Sodium borohydride, caplets (18 × 10 × 8 mm), 98%
Sigma-Aldrich
Sodium borohydride, 90% NaBH4 basis, pellets, diam. 8 mm, Cobalt (Doped)
Sigma-Aldrich
Sodium borohydride, hydrogen-storage grade, 98%
Sigma-Aldrich
Sodium borohydride, powder, ≥98.0%
Sigma-Aldrich
Sodium hydroxide-16O solution, 20 wt. % in H216O, 99.9 atom % 16O
Sigma-Aldrich
Hydrogen chloride, ReagentPlus®, ≥99%
Sigma-Aldrich
Sodium borohydride, granular, 10-40 mesh, 98%
Sigma-Aldrich
Hydrochloric acid, 36.5-38.0%, BioReagent, for molecular biology
Sigma-Aldrich
Sodium borohydride solution, 0.5 M in 2-methoxyethyl ether
Sigma-Aldrich
Sodium borohydride solution, ~12 wt. % in 14 M NaOH
Supelco
Hydrochloric acid solution, volumetric, 0.1 M HCl (0.1N), endotoxin free
Sigma-Aldrich
Hydrochloric acid solution, 1.0 N, BioReagent, suitable for cell culture
Sigma-Aldrich
Hydrochloric acid solution, ~6 M in H2O, for amino acid analysis
Sigma-Aldrich
3-Ethyl-2,4-pentanedione, mixture of tautomers, 98%
Sigma-Aldrich
Sodium hydroxide solution, 1.0 N, BioReagent, suitable for cell culture
Sigma-Aldrich
Sodium borohydride solution, 2.0 M in triethylene glycol dimethyl ether
Sigma-Aldrich
Sodium hydroxide, BioUltra, for luminescence, ≥98.0% (T), pellets
Sigma-Aldrich
Sodium hydroxide solution, BioUltra, for molecular biology, 10 M in H2O
Sigma-Aldrich
2-(Diisopropylamino)ethyl methacrylate, 97%, contains ~100 ppm monomethyl ether hydroquinone as inhibitor
Sigma-Aldrich
VenPure® SF, powder
Sigma-Aldrich
Hydrochloric acid solution, 32 wt. % in H2O, FCC
Sigma-Aldrich
Hydrogen chloride solution, 3 M in cyclopentyl methyl ether (CPME)
Sigma-Aldrich
Sodium hydroxide, ultra dry, powder or crystals, 99.99% trace metals basis