A sensitive method for determining total vanadium in water samples using colorimetric-solid-phase extraction-fiber optic reflectance spectroscopy

Filik, Hayati; Yanaz, Zeynep

doi:10.1016/j.jhazmat.2009.07.136

Cited by 32 publications

(11 citation statements)

References 35 publications

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“…Vanadium is presently registered in the contaminant candidate list (CCL) and considered in the same class as mercury, lead, and arsenic . The most common oxidation states of vanadium are (III), (IV) and (V) in aqueous solution, where V(V) is the most toxic . The anthropogenic emission of vanadium related to industrial production, such as stainless steel, paint, catalyst, glass, jet engines and ceramic is the source of vanadium found in waters .…”

Section: Introductionmentioning

confidence: 99%

“…6 The most common oxidation states of vanadium are (III), (IV) and (V) in aqueous solution, where V(V) is the most toxic. 7 The anthropogenic emission of vanadium related to industrial production, such as stainless steel, paint, catalyst, glass, jet engines and ceramic is the source of vanadium found in waters. 8 Therefore it has to be removed from water, which is one of the major ways that it enters the human body.…”

Section: Introductionmentioning

confidence: 99%

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Adsorptive performance of nanosized zero‐valent iron for V(V) removal from aqueous solutions

Yayayürük

2017

J of Chemical Tech & Biotech

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BACKGROUND Vanadium is included in the USEPA Contaminant Candidate List. It is an essential dietary mineral but it becomes toxic at high concentrations causing health problems. In this study, nanosized zero‐valent iron (nZVI) was synthesized and the applicability of the sorbent was investigated for the removal of V(V) in water samples. RESULTS The synthesized sorbent is characterized by scanning electron microscopy‐energy dispersive X‐ray spectroscopy, thermo gravimetric and Brunauer–Emmett–Teller surface area analysis. Particle size and zeta potential measurements of the sorbent were also elucidated. Batch type adsorption experiments were performed using inductively coupled plasma mass spectrometry and the effects on the adsorption of V(V) of pH, sorbent amount, contact time, initial concentration and temperature were investigated. Langmuir isotherm model was found to characterize the uptake of V(V) by nZVI and the sorption kinetics fitted better with the pseudo‐second‐order model. The proposed method was applied for the removal of V(V) ion in real water samples and quantitative results (>85%) were obtained. CONCLUSION nZVI has demonstrated its potential use for the removal of V(V) ions in aqueous solutions. The sorbent warrants an evaluation of a scale up procedure in water remediation studies with the advantages of having a high adsorption capacity, ease of preparation and being environmentally friendly. © 2017 Society of Chemical Industry

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Adsorptive performance of nanosized zero‐valent iron for V(V) removal from aqueous solutions

Yayayürük

2017

J of Chemical Tech & Biotech

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“…The XAD‐16 resin was chosen as support material because it has been customarily employed for the immobilization of different types of reagents,15–18 providing satisfactory results, usually better than those obtained with XAD‐2 and XAD‐7 resins. The effect of reagent concentration on reflectance was studied by varying the volume of Fe(III)‐Bpy reagent (Fe(III):Bpy = 1:3) in the range of 0.5–3.5 ml.…”

Section: Resultsmentioning

confidence: 99%

“…To remove the contaminants, Amberlite XAD‐16 resin beads were prepared as described in the literature 15–18. A weight of 1.0 gram dry resin (Amberlite XAD‐16) beads were treated with 2.5 ml of Fe(III)‐Bpy solution and 2.5 ml of 3 mol L −1 ammonium acetate buffer (pH = 7), and the mixture was shaken at room temperature for 5 min.…”

Section: Introductionmentioning

confidence: 99%

Colourimetric solid‐phase extraction coupled with fibre optic reflectance spectroscopy for determination of ascorbic acid in pharmaceutical formulations

Filik

Aksu

Giray

et al. 2011

Drug Testing and Analysis

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A redox colourimetric solid-phase extraction (C-SPE) procedure for the determination of ascorbic acid (AA) in pharmaceutical formulations was proposed. Iron (III)-2,2'-dipyridyl (Fe(III)-Bpy) reagent solution was used as a colouring reagent for AA and the immobilization of the redox product onto Amberlite XAD-16 resin was achieved. The analyte in the sample reacted with a solid sorbent loaded with the colourimetric reagent (Fe(III)-Bpy) and then quantified directly on the sorbent surface by using a fibre optic reflectance spectrometer (FORS). The amount of AA was reflectometrically determined in a few seconds with a total sample workup and readout time of ∼10 min using only 10-ml sample volumes. The limit of detection (LOD) and quantification (LOQ) values were 0.18 and 0.6 mg L(-1), respectively, and the linear dynamic range for AA extended up to 8.8 mg L(-1). The C-SPE for different extractions (n = 5) gave a relative standard deviation (RSD) of 2.9% at 5.28 mg L(-1) AA level.

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“…Optical sensors to detect heavy metal ions have been developed by various methods such as reflectance [4,5], absorption [6], Fabry-Perot interferometer [7,8], and fluorescence [9]. Fabry-Perot interferometer (FPI) method has the ease of fabrication, high sensitivity, and fast response, making it suitable to be used as distributed optical sensors.…”

Section: Introductionmentioning

confidence: 99%

Chitosan Layer Fabry-Perot Interferometer-Based Optical Fiber Sensor for Cadmium Ion Detection

2016

3rd International Conference on Innovative Engineering Technologies (ICIET'2016) August 5-6, 2016 Bangkok (Thailand)

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Abstract-Optical sensors based on Fabry-Perot interferometer to detect cadmium ions is proposed. The sensor was fabricated by coating the tip of the optical fiber by chitosan. The two chitosan surfaces serve as mirrors which form a Fabry-Perot interferometer. The characterization results indicate that the sensor has a linear response with sensitivity of 0.0884 dBm/ppm with a correlation factor of 0.9665. The sensor reach steady state response in 5 minutes.

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A sensitive method for determining total vanadium in water samples using colorimetric-solid-phase extraction-fiber optic reflectance spectroscopy

Cited by 32 publications

References 35 publications

Adsorptive performance of nanosized zero‐valent iron for V(V) removal from aqueous solutions

Adsorptive performance of nanosized zero‐valent iron for V(V) removal from aqueous solutions

Colourimetric solid‐phase extraction coupled with fibre optic reflectance spectroscopy for determination of ascorbic acid in pharmaceutical formulations

Chitosan Layer Fabry-Perot Interferometer-Based Optical Fiber Sensor for Cadmium Ion Detection

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