Determination of Atrazine in Natural Water Samples by Differential Pulse Adsorptive Stripping Voltammetry Using a Bismuth Film Electrode

Figueiredo-Filho, Luiz C. S.; Azzi, Déborah C.; Janegitz, Bruno C.; Fatibello‐Filho, Orlando

doi:10.1002/elan.201100421

Cited by 39 publications

(19 citation statements)

References 30 publications

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“…Mercury film [33] 0.1 BSA/anti-atrazine/GNPs/gold [34] 0.074 Boron-doped diamond [35] 10 Poly(JUG-HATZ) [36] 0.001 Bismuth film [37] 140 MIT/CA [38] 8 Hanging mercury drop [39] 21 MIP/GFE (This work) 4.99…”

Section: Atrazine Sensormentioning

confidence: 99%

Isotherm and Electrochemical Properties of Atrazine Sensing Using PVC/MIP: Effect of Porogenic Solvent Concentration Ratio

et al. 2021

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Widespread atrazine use is associated with an increasing incidence of contamination of drinking water. Thus, a biosensor using molecularly imprinted polymers (MIPs) was developed to detect the amount of atrazine in water to ensure prevention of exposure levels that could lead to reproductive effects in living organisms. In this study, the influence of the porogen on the selectivity of MIPs was investigated. The porogen plays a pivotal role in molecular imprinting as it affects the physical properties and governs the prepolymerization complex of the resulting polymer, which in turn firmly defines the recognition properties of the resulting molecularly imprinted polymer (MIP). Therefore, bulk MIPs against atrazine (Atr) were synthesized based on methacrylic acid (MAA) as a functional monomer and ethyleneglycol dimethacrylate (EGDMA) as a crosslinker; they were prepared in toluene and dimethyl sulfoxide (DMSO). The imprinting factor, binding capacity, and structural stability were evaluated using the respective porogenic solvents. Along with the characterization of the morphology of the obtained polymers via SEM and BET analysis, the kinetic and adsorption analyses were demonstrated and verified. The highest imprinting factor, binding capacity, and the highest structural stability were found to be on polymer synthesized in a medium of MAA and EGDMA, which contained 90% toluene and 10% DMSO as porogen. Moreover, the response for Atr concentrations by the PVC-based electrochemical sensor was found to be at a detection limit of 0.0049 μM (S/N = 3). The sensor proved to be an effective sensor with high sensitivity and low Limit of Detection (LOD) for Atr detection. The construction of the sensor will act as a baseline for a fully functionalized membrane sensor.

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Section: Atrazine Sensormentioning

confidence: 99%

Isotherm and Electrochemical Properties of Atrazine Sensing Using PVC/MIP: Effect of Porogenic Solvent Concentration Ratio

et al. 2021

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“…Other research groups [113][114][115] have examined postelectrolysis solutions by means of NMR techniques to confirm the presence of a triazine ring-opened intermediate as well as a dechlorinated product. Atrazine (7) has been reduced at carbon and solid amalgam electrodes [116], and electrochemical sensors have been designed to determine the amount of triazine pesticides in environmental aqueous samples [117,118].…”

Section: Triazines and Benzonitrilesmentioning

confidence: 99%

Electrochemical Dehalogenation of Organic Pollutants

et al. 2017

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<p>This review summarizes our own research, published since 2004, dealing with electrochemical reduction of halogenated organic compounds that are environmental pollutants. Included are sections surveying the direct and mediated reduction of the following species: (a) chlorofluorocarbons; (b) pesticides, fungicides, and bactericides; (c) flame retardants; and (d) disinfection by-products arising from the chlorination of water. To provide the reader with a perspective of these topics beyond our own work, a total of 238 literature citations, pertaining to studies conducted in numerous laboratories around the world, appears at the end of this review.</p>

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“…Based upon previous studies on the electrochemical oxidation and reduction of bismuth(III) in aqueous solutions, 37 the inuence of the applied deposition potential was rst evaluated via cyclic voltammetry utilising a scan rate of 60 mV s À1 in the range from À0.1 to À0.6 V in a solution comprising 0.02 mol L À1 Bi(NO 3 ) 3 and 0.15 mol L À1 sodium citrate in 1.5 mol L À1 HCl. 30,38 A homogeneous bismuth metal lm with good adherence was obtained through applying a deposition potential of À0.18 V for 120 seconds. However at potentials higher than À0.18 V, the formation of the bismuth lm upon the electrode substrate was not observed due to the potential not being sufficiently negative to electrochemically reduce bismuth(III) to bismuth metal.…”

Section: Bismuth Lm Formation On the Copper Mini-sensormentioning

confidence: 99%

“…The bismuth lm obtained in HCl and sodium citrate medium presented good adherence and homogeneous structure and it was applied for pesticides analysis. 30,38 Inspired by the reports of disposable sensors and literature reports that copper is an ideal surface to support a bismuth lm, we report upon a disposable bismuth-lm mini-sensor supported upon a copper substrate is which is shown to be useful for the analytical determination of lead(II) and cadmium(II) via square-wave anodic stripping voltammetry (SWASV) which is veried in natural water samples with Flame Atomic Absorption Spectrometry.…”

Section: Introductionmentioning

confidence: 99%

Inexpensive and disposable copper mini-sensor modified with bismuth for lead and cadmium determination using square-wave anodic stripping voltammetry

et al. 2013

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The fabrication and evaluation of a disposable copper mini-sensor ex situ modified bismuth film for the sensing of lead(II) and cadmium(II) via square-wave anodic stripping voltammetry (SWASV) is presented.The sensor was ex situ modified with a bismuth film via electro-deposition through applying a potential of À0.18 V vs. Ag/AgCl (3.0 mol L À1 KCl) for 200 seconds in a 0.02 mol L À1 Bi(NO 3 ) 3 , 0.15 mol L À1 sodium citrate in 1.5 mol L À1 HCl solution. Under the optimal experimental conditions, the voltammetric response was linearly dependent on the analyte concentrations over the range from 1.3 Â 10 À6 to 1.3 Â 10 À5 mol L À1 and from 9.9 Â 10 À7 to 1.2 Â 10 À5 mol L À1 with a limit of detection of 8.3 Â 10 À7 mol L À1 and 5.3 Â 10 À7 mol L À1 for Pb(II) and Cd(II), respectively. The determination of both toxic metallic species was carried out in natural waters using the sensor obtaining results which are in close agreement with those obtained using Flame Atomic Absorption Spectrometry at a 95% confidence level.

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Determination of Atrazine in Natural Water Samples by Differential Pulse Adsorptive Stripping Voltammetry Using a Bismuth Film Electrode

Cited by 39 publications

References 30 publications

Isotherm and Electrochemical Properties of Atrazine Sensing Using PVC/MIP: Effect of Porogenic Solvent Concentration Ratio

Isotherm and Electrochemical Properties of Atrazine Sensing Using PVC/MIP: Effect of Porogenic Solvent Concentration Ratio

Electrochemical Dehalogenation of Organic Pollutants

Inexpensive and disposable copper mini-sensor modified with bismuth for lead and cadmium determination using square-wave anodic stripping voltammetry

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