A simple square wave voltammetric method for the determination of aclonifen herbicide

İnam, Recai̇; Çakmak, Zeynep

doi:10.1039/c3ay40333e

Cited by 8 publications

(5 citation statements)

References 17 publications

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“…The square wave voltammetric method for the determination of aclonifen herbicide showed an oxidation peak at +1175 mV on the glassy carbon electrode (GCE) in a pH 4 B-R buffer solution. 40 Aclonifene was taken at the same concentration as phenmedipham (1 mg/L) and the relative error in recovery of phenmedipham was +4.3%. If the aclonifen concentration exceeded the phenmedipham concentration by 5-or 10-fold, the relative error in the phenmedipham assay was below the 5% tolerance limit.…”

Section: Methods Selectivity and Interference Effectmentioning

confidence: 99%

Voltammetric determination of phenmedipham herbicide using a multiwalled carbon nanotube paste electrode

Demir¹,

İnam²

2018

Turk J Chem

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Phenmedipham is an herbicide used especially in the sugar beet harvest to fight against broad-leaved weeds and studies of its voltammetric behavior and detection have not been done before. The superior properties of carbon nanotubes such as electrical conductivity, mechanical strength, and wide potential ranges make them attractive for chemical sensors and the phenmedipham compound gave an oxidation peak at + 1320 mV (vs. Ag/AgCl) on the nanostructured multiwalled carbon nanotube paste electrode. Square wave voltammetric measurements recorded for phenmedipham showed that the peak current increased linearly between 0.02 and 2.0 mg/L with a regression coefficient of r = 0.9989, and the limit of detection and limit of quantification were calculated as 6.96 µ g/L and 23.2 µ g/L, respectively. The applicability and the selectivity of the improved square wave voltammetric method for the phenmedipham assay were investigated in the presence of certain herbicides and fungicides such as carbendazim, benomyl, aclonifen, ethofumesate, metamitron, and p-acetanisidide (methacetin). Phenmedipham at 1 mg/L with the same amount of these pesticides was determined to have recoveries of 103.5

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Section: Methods Selectivity and Interference Effectmentioning

confidence: 99%

Voltammetric determination of phenmedipham herbicide using a multiwalled carbon nanotube paste electrode

Demir¹,

İnam²

2018

Turk J Chem

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“…The LOD and limit of quantification (LOQ) values were obtained as 0.16 μM and 0.55 μM, respectively. LOD and LOQ values were calculated using the following equations [ 24 , 25 ]: LOD = 3 Sb / m , LOQ = 10 Sb / m , where Sb is the standard deviation of the fortified blank solution containing 10 μM CA (10 runs) and m is the slope of the calibration curve. The high values of the slope (3 × 10 −3 μA/μM) and correlation coefficient ( R 2 = 0.994) reflected the sensitivity of the proposed method.…”

Section: Resultsmentioning

confidence: 99%

Determination of the food dye carmine in milk and candy products by differential pulse polarography

Yilmaz

Ergun

Yılmaz

2014

Journal of Food and Drug Analysis

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As a basis for the development of a sensitive analytical method for the determination of carmine food dye, a study of the differential pulse polarographic reduction of carminic acid (CA) on a dropping mercury electrode was performed. For the analytical differential pulse polarographic method running at pH 2.0 Britton-Robinson (B-R) buffer solution (peak at -489 mV), the relationship between the peak current and CA concentration was linear in the range of 1 μM to 90 μM with a detection limit of 0.16 μM. The proposed electrochemical procedure was successfully applied to the determination of carmine food dye in spiked commercially available strawberry flavored milk. The method was extended to the determination of CA in candy and results were in agreement with that obtained by a spectrophotometric comparison method. A cyclic voltammogram of CA in 2.0 B-R buffer electrolyte was obtained on the dropping mercury electrode at pH 2.0 during potential scans from 0.00 mV to 1000 mV versus Ag/AgCl. From repetitive cyclic voltammograms, one cathodic peak at -500 mV and three anodic peaks on the reverse scan between approximately -340 mV and -460 mV were recorded. The influences of some other commonly found inorganic and organic salts on the determination of CA were also examined. The sufficiently good recoveries and low standard deviations for the data reflect the high accuracy and precision of the proposed differential pulse polarographic method.

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“…This is possible due to the increased mechanical stability of m-AgSAE compared to traditional electrodes utilizing liquid mercury. Due to the use of m-AgSAE this method is more sensitive than comparable methods using f-AgSAE [22] and BDDE [24] and the electrode is less prone to passivation and easier to maintain. This is even more true when compared to the more sensitive but much more complex electrochemical nanobiosensors [15][16][17].…”

Section: Discussionmentioning

confidence: 99%

“…More direct approach using silver amalgam based electrodes is also a recurring theme in the contemporary literature [18][19][20][21][22], all the works use a mercury film modified AgSAE for some reason, which uses small amounts of mercury for film renewal, but the mercury has to be in a toxic water soluble form, the film is much less stable than a meniscus and the electrode needs to be polished much more often, which is time consuming. Some works focus on the determination of herbicides at classical mercury electrodes [23] this method utilizes the excellent reproducibility of a hanging mercury drop electrode (HMDE) to deconvolute the signals of three herbicides to determine them in a mixture.…”

Section: Introductionmentioning

confidence: 99%

Voltammetric Determination of Aclonifen at a Silver Amalgam Electrode in Drinking and River Water

Novotný

Barek

2017

Ecological Chemistry and Engineering S

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Abstract:A method for the determination of pesticide Aclonifen (AC) in drinking and river water by differential pulse voltammetry (DPV) on a meniscus modified silver solid amalgam electrode (m-AgSAE) using solid phase extraction (SPE) as a cleanup and preconcentration procedure is described. The limit of detection (LOD) for direct DPV determination of AC in deionized water is 2.7·10 -8 mol·dm -3. LOD for DPV determination of AC in tap water after SPE is 1.6·10 -10 mol·dm -3, the recovery being 55%. LOD for the determination of AC in Vltava river water is 1.9·10 -9 mol·dm -3, the recovery being 65%. Humic acids interfere with the determination in river water; this problem can be resolved by adjusting the pH of the extracted sample to 6. The advantages of this approach are high sensitivity, low LOD, quick and easy sample preparation and fast determination.

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A simple square wave voltammetric method for the determination of aclonifen herbicide

Cited by 8 publications

References 17 publications

Voltammetric determination of phenmedipham herbicide using a multiwalled carbon nanotube paste electrode

Voltammetric determination of phenmedipham herbicide using a multiwalled carbon nanotube paste electrode

Determination of the food dye carmine in milk and candy products by differential pulse polarography

Voltammetric Determination of Aclonifen at a Silver Amalgam Electrode in Drinking and River Water

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