Colorimetric determination of thiram based on formation of gold nanoparticles using ascorbic acid

Rastegarzadeh, Saadat; Abdali, Sh.

doi:10.1016/j.talanta.2012.11.023

Cited by 58 publications

(21 citation statements)

References 33 publications

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“…Also, the results dedicated that the average size of AgNPs as determined by DLS is 10 nm, and 98 % of the particles are in the range of 4–19 nm. The UV–Vis spectra showed the distinctive absorption peak near 400 and 512 nm for AgNPs and AuNPs, respectively, corresponds to characteristic plasmon resonance absorbance peak of these nanoparticles …”

Section: Resultsmentioning

confidence: 99%

“…Then the solution was diluted to mark immediately and mixed slowly. After 6 min, the reaction was completed, which the color of the solution changed to red and remained approximately constant …”

Section: Methodsmentioning

confidence: 99%

“…After 6 min, the reaction was completed, which the color of the solution changed to red and remained approximately constant. [6] For preparation of AgNPs, an aliquot of the solution containing of NaOH was placed in a 10 ml volumetric flask, and then appropriate amounts of ascorbic acid solution, SDS, and AgNO 3 were added. The resulting solution is then diluted to the mark with water and mixed thoroughly and left to stand for 7 min to complete reaction so that the yellow color is allowed to develop.…”

Section: Preparation Of Nanoparticlesmentioning

confidence: 99%

“…Attaching a nanostructure on surfaces and interfaces has been attracting active attention in materials chemistry and nanotechnology, which can be developed in highly sensitive, cost‐effective, miniature sensors . Gold and silver nanoparticles (Au and AgNPs) have distinctive physical and chemical properties that can be of great utility in creating novel recognition and transduction processes for chemical and biological sensors …”

Section: Introductionmentioning

confidence: 99%

“…[4,5] Gold and silver nanoparticles (Au and AgNPs) have distinctive physical and chemical properties that can be of great utility in creating novel recognition and transduction processes for chemical and biological sensors. [6,7] Because of cheap and simple preparation, Au and Ag colloid solutions are mostly used in sensing methods. [8][9][10][11] But according to possible aggregation of these NPs and their instability in the solution, the assay methods based on colloidal NPs show poor reproducibility and selectivity results.…”

Section: Introductionmentioning

confidence: 99%

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Preparation and characterization of nanostructured thin films of Au and Ag nanoparticles synthesized by ascorbic acid on modified glass surface

Rastegarzadeh

Azarkish

Abdali

2015

Surf. Interface Anal.

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a Immobilization of Ag and Au nanoparticles (NPs) synthesized by ascorbic acid on chemically modified glass surface has been studied. 3-[2-(2-Aminoethylamino)ethylamino]propyl-trimethoxysilane (AMPTS), N-(2-aminoethyl)-3-aminopropyltrimethoxysilan, and 3-trimethoxysilyl-1-propanethiol (MSPT) were used as surface modifying agents. To improve immobilization efficiency, the ammonia solution has been used along with the silane reagents, which assisted to adsorb the metal NPs on glass surface. It was found that AMPTS and MSPT have considerable effect on deposition of Ag and AuNPs on glass substrate. The fabricated thin films were characterized by using UV-Vis spectroscopy, atomic force microscopy, energy-dispersive X-ray spectroscopy and subjected to antimicrobial resistance test. The UV-Vis spectra show a distinctive plasmon resonance absorbance peak for thin films of Au and AgNPs prepared with MSPT and AMPTS, respectively. Atomic force microscopy images indicate that formation of Au and AgNPs with spherical morphology after immobilization on the glass substrate and also the dimensions of NPs on the surface appear larger than those observed in the parent colloidal solution. Energy-dispersive X-ray spectroscopy measurements confirmed the presence of silver and gold on the modified glass surface, and elemental composition was measured. The Au and AgNPs thin films show antibacterial activity against gram negative (Escherichia coli) and gram positive (Staphylococcus aureus) bacteria in comparison with a blank sample.

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Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Preparation Of Nanoparticlesmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Preparation and characterization of nanostructured thin films of Au and Ag nanoparticles synthesized by ascorbic acid on modified glass surface

Rastegarzadeh

Azarkish

Abdali

2015

Surf. Interface Anal.

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Microvolume UV – V isible Spectrometry for Assaying of Pesticides

Rohit¹,

Mehta²

2021

Miniaturized Analytical Devices

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Determination of thiram residues in fresh water using flow injection diperiodatonickelate(IV)–quinine chemiluminescence detection

et al. 2022

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This study developed a simple flow injection (FI) method based on diperiodatonickelate(IV)-sulfuric acid reaction using chemiluminescence (CL) detection for the determination of thiram (THI) fungicide in fresh water using quinine as the sensitizer. The possible mechanism of the CL reaction was described using UV-Vis. absorption and CL spectra. Experimental variables were optimized by applying a univariate approach, and a linear calibration curve was obtained in the range of 1.0 Â 10 À3 -2.0 mg L À1 (R 2 = 0.9994, n = 9) with a limit of detection of 5.0 Â 10 À4 mg L À1 (S/N = 3) and an injection throughput of 200 h À1 . This approach was successfully applied to determine THI in fresh water by using solid-phase extraction and achieved a good recovery rate of 94%-110% with a relative standard deviation of 1.9%-3.7% (n = 4). The results obtained were compared with the reported FI-CL and high-performance liquid chromatography-ultraviolet methods, and the three methods did not differ significantly at the 95% confidence limit.

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Colorimetric determination of thiram based on formation of gold nanoparticles using ascorbic acid

Cited by 58 publications

References 33 publications

Preparation and characterization of nanostructured thin films of Au and Ag nanoparticles synthesized by ascorbic acid on modified glass surface

Preparation and characterization of nanostructured thin films of Au and Ag nanoparticles synthesized by ascorbic acid on modified glass surface

Microvolume UV – V isible Spectrometry for Assaying of Pesticides

Determination of thiram residues in fresh water using flow injection diperiodatonickelate(IV)–quinine chemiluminescence detection

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