Study and determination of the pesticide Imidacloprid by square wave adsorptive stripping voltammetry

Cabanillas, Agustina Guiberteau; Galeano, T.; Mora, N.; Parrilla, P.; Salinas, F.

doi:10.1016/s0039-9140(00)00576-2

Cited by 75 publications

(34 citation statements)

References 15 publications

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“…2) recorded in the pH range from 2.0 to 8.0 to study the pH dependence of the peak potentials, which shifted to m ore negative values wi th increasing p H. The sharpest, most symmetrical and intense peaks were obtained in th e neutral and slightly alkaline solutions (pH 7.0 and 8.0), whic h is in good agreem ent with previous voltammetric investigations of neonicotinoids with a nitro-group. [11][12][13][14][15][18][19][20][21] Based on these results and with th e aim of avoiding possible hydrolysis of the TCP binder in alkalin e media, pH 7.0 was chos en for t he determinations. Studies of t he reproducibility of t he TCP -CPE signals were also performed, first to check the signal stabilit y and possibl e changes in its shape duri ng t he m easurement.…”

Section: Voltammetric Investigation Of Thiamethoxam At Cpementioning

confidence: 99%

Voltammetric determination of the neonicotinoid insecticide thiamethoxam using a tricresyl phosphate-based carbon paste electrode

et al. 2010

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The objective of the work was to i nvestigate the possibility of using a tricresyl phosphate-based carbon paste electrode for the direct voltammetric determination of the neonicotinoid insecticide thiamethoxam. The analyte was determined by differential pul se voltammetry in Britton-Robinson buffer p H 7.0 in the concentr ation range of 3.72-41.5 µg m L -1 . The reproducibility of t he analytical signal at the 7.29 µg mL -1 level was characterized by a relative standard devi ation of 1.3 %. The applicability of the d eveloped method was ev aluated by determining thiamethoxam in a river water sa mple and a co mmercial formulation Actara 25 WG.

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Section: Voltammetric Investigation Of Thiamethoxam At Cpementioning

confidence: 99%

Voltammetric determination of the neonicotinoid insecticide thiamethoxam using a tricresyl phosphate-based carbon paste electrode

et al. 2010

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“…5,18 These instrumental methods are accurate but expensive and time consuming, requiring lengthy sample extraction and cleanup procedures. Recently, various electrochemical methods have been proposed for the determination of Imidacloprid, including square wave adsorptive stripping voltammetry 19 and Differential-Pulse Polarography. 8 Carbon-based materials e.g.…”

Section: Introductionmentioning

confidence: 99%

Determination of Imidacloprid in Tomato Grown in Greenhouse Based on Copper(II) Phthalocyanine Modified Carbon Ceramic Electrode by Differential Pulse Voltammetry

Majidi

Asadpour‐Zeynali

Bamorowat

et al. 2011

J Chinese Chemical Soc

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A new sol-gel derived electrocatalytic carbon ceramic electrode was prepared by incorporating copper(II) phthalocyanine (CuPc) in a carbon ceramic network. This electrode was used as a sensitive electrochemical sensor for determination of the insecticide Imidacloprid (1-(6-chloro-3-pyridylmethyl)-N-nitroimidazolidin-2-ylideneamine) by differential pulse voltammetry (DPV). The resulting modified electrode exhibits a cathodic peak potential shifted positively and an increasing in cathodic peak current in comparison with unmodified electrode. The redox properties of this modified electrode at various pH values and CuPc percentage were investigated. The catalytic current obtained from differential pulse voltammetry is linearly dependent on Imidacloprid concentration over the two linear ranges of 0.67-17 µM and 17-93 µM with correlation coefficient of R 2 = 0.9999 and R 2 = 0.990, respectively. The detection limit for Imidacloprid was found to be 0.28 mM according to lower linear range. Possible interferences from several common pesticides were also evaluated. The inherent stability, high sensitivity, low detection limit and low cost for each preparation are advantages of this sensor. Determination of Imidacloprid in commercial formulation and residual Imidacloprid in tomato grown in greenhouse (protected cultivation) was also conducted. The results obtained from commercial formulation were completely consistent with those obtained through the standard high-performance liquid chromatography (HPLC) method.

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“…Recently, some alternative techniques like an enzyme-linked immunosorbent assay (ELISA) [21,22], fluorimetry [23], Fourier transform infrared spectroscopy (FTIR) [24] have been employed for the rapid, selective analysis of neonicotinoid containing samples of different origins. Electroanalytical methods such as differential-pulse polarography (DPP) [25], square-wave adsorptive stripping voltammetry on a hanging mercury drop electrode (HMDE) [26]), have also been published on the determination of imidacloprid, in commercial formulations and spiked river water samples. A current publication [27] described the on line photochemical transformation of imidacloprid, allowing the highly sensitive and selective, indirect determination of the parent compound and its stable degradation products, using liquid chromatography with electrochemical detection.…”

Section: Introductionmentioning

confidence: 99%

“…To the best of our knowledge, no publications dealing with the electroanalytical monitoring of the photocatalytic degradation of neonicotinoids (imidacloprid and acetamiprid) have appeared so far. As these compounds have functional groups reducible in a fairly negative potential range, only the mercury [25,26,29] and glassy carbon electrodes [27,28] were applied for their determination. It is known that bismuth film on glassy carbon and carbon-based screen printed electrodes [30,31], likewise mercury film, improves the sensitivity of different types of stripping analysis methods, especially for a wide assortment of metal ions [32 -47].…”

Section: Introductionmentioning

confidence: 99%

Monitoring of Photocatalytic Degradation of Selected Neonicotinoid Insecticides by Cathodic Voltammetry with a Bismuth Film Electrode

et al. 2008

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An electroanalytical method has been developed for the determination of two water soluble pyridine based neonicotinoid insecticides (imidacloprid and acetamiprid) by differential pulse voltammetry with a bismuth film electrode in aqueous Britton -Robinson buffer solution as supporting electrolyte. The bismuth film electrode preparation was optimized for cathodic voltammetric application. The reduction peaks of the neonicotionids appeared at potentials more negative than À 0.5 V (BiFE vs. Ag/AgCl/3.0 M KCl) and the signal characteristics depended on the pH of the supporting electrolyte. The best analysis conditions were found to be pH 8.0 for imidacloprid and pH 3.0 for acetamiprid at the following measurement parameters: pulse amplitude 50 mV, pulse width 50 ms and scan rate 25 mV. Calibration curves were linear in the concentration range of 2.43 -51.1 mg/cm 3 for imidacloprid and 2.95 -47.3 mg/cm 3 for acetamiprid, while the detection limits were 0.73 mg/cm 3 and 0.88 mg/cm 3 for imidacloprid and acetamiprid, respectively. The electroanalytical method has allowed monitoring the heterogeneous photocatalytic (O 2 /TiO 2 /UV) degradation of the two insecticides via their disappearance. The dynamics and the reaction rate determined on the basis of the electrochemical data were validated with HPLC/DAD and FTIR measurements.

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Study and determination of the pesticide Imidacloprid by square wave adsorptive stripping voltammetry

Cited by 75 publications

References 15 publications

Voltammetric determination of the neonicotinoid insecticide thiamethoxam using a tricresyl phosphate-based carbon paste electrode

Voltammetric determination of the neonicotinoid insecticide thiamethoxam using a tricresyl phosphate-based carbon paste electrode

Determination of Imidacloprid in Tomato Grown in Greenhouse Based on Copper(II) Phthalocyanine Modified Carbon Ceramic Electrode by Differential Pulse Voltammetry

Monitoring of Photocatalytic Degradation of Selected Neonicotinoid Insecticides by Cathodic Voltammetry with a Bismuth Film Electrode

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