Adsorptive stripping square wave voltammetry (Ad-SSWV) accomplished with second-order multivariate calibration

Galeano-Dı́az, Teresa; Cabanillas, Agustina Guiberteau; Espínosa-Mansilla, A.; López-Soto, M.D.

doi:10.1016/j.aca.2008.04.058

Cited by 52 publications

(20 citation statements)

References 35 publications

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“…In the recent years, the SW voltammetry has emerged as a viable and cheap alternative to the expensive and time-consuming techniques (such as chromatography, or spectrophotometry, for example) for the determination of inorganic and biologically important compounds. The simple working set-up, the quick time of performing the measurements, the different modes that can be applied, together with its sensitivity, make the SWV a technique of choice for quantification of important classes of compounds such as proteins [82], vitamins [83], phenols [84][85][86][87][88], benzoquinones [89], pesticides, herbicides and fungicides [90][91][92][93][94][95][96][97][98], alkaloids [99], terpenoids [100], heavy metals [101][102][103][104][105][106][107][108][109][110][111][112][113][114][115][116], and drugs [117,118]. One of the most valuable ability of SWV is its application for simultaneous determination of compounds with similar structures present in various pharmaceutical and physiological samples.…”

Section: Analytical and Biochemical Applications Of Square-wave Voltamentioning

confidence: 99%

Square‐Wave Voltammetry: A Review on the Recent Progress

et al. 2013

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A review on the recent progress of square-wave voltammetry is presented, covering the period of the last five years. The review addresses the new theoretical development of the technique as well as its application for mechanistic purposes, electrode kinetic measurements, biochemical and analytical applications. Besides, a few novel methodological modifications are proposed that might expand the scope and application of the technique.

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Section: Analytical and Biochemical Applications Of Square-wave Voltamentioning

confidence: 99%

Square‐Wave Voltammetry: A Review on the Recent Progress

et al. 2013

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“…In the proposed method changing of the pulse duration allowed to simple generation of the electrochemical second-order data. The present work for data creation is usable for differential pulse voltammetry in all condition while the previous method [18], is usable only for stripping analysis.…”

Section: Discussionmentioning

confidence: 99%

“…Very recently one paper has been published in this attractive field. Galeano Diaz and co-workers demonstrated that the electrochemical three way data could be obtained by changing the accumulation time of the stripping analysis at a mercury electrode [18]. The main drawback of their method is that their approach can be used only for stripping voltammetry analysis, while the present work proposed a new way for generation of the electrochemical secondorder data by differential pulse voltammetry in stripping and non stripping analysis.…”

Section: Introductionmentioning

confidence: 94%

Second‐Order Data Obtained from Differential Pulse Voltammetry: Determination of Lead in River Water Using Multivariate Curve Resolution‐Alternating Least‐Squares (MCR‐ALS)

Abdollahi

Kooshki

2010

Electroanalysis

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Multivariate curve resolution by alternating least squares (MCR-ALS) with the aim of achieving the electrochemical second order advantage has been applied to potential-time second-order data. In this work a simple way is reported as a first approach towards generation of the instrumental electrochemical second-order data by differential pulse voltammetry (DPV). A linear dependency exists in the pulse duration profiles of the electroactive species in the mixture samples. Rank deficiency of the mixture data matrix is broken by matrix augmentation. Due to existence of potential shift in the obtained data, MCR-ALS could not be achieved the convergence on the augmented data. So this shift was corrected with potential shift correction algorithm. Results of MCR-ALS after shift correction show that the proposed method could be efficiently used for determination of Pb 2 + in the presence of unexpected interferents in the river water sample.

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“…In order to evaluate and control the quality of water and food, simple and sensitive methods are required for the determination of OPP in water and food. 1 Several analytical methods have been proposed in the literature for the determination of methamidophos and fenitrothion residues, such as gas chromatography, 2 adsorptive stripping square wave voltammetry, 3 differential pulse stripping voltammetry, 4 acetylcholine enzyme sensor 5 and high performance liquid chromatography. 6 However, sometimes, analytical problems derived from matrix interferences or signal overlapping make the determination of analytes difficult.…”

Section: Introductionmentioning

confidence: 99%

Differential Kinetic Spectrophotometric Determination of Methamidophos and Fenitrothion in Water and Food Samples by Use of Chemometrics

Deng

Kokot

2010

Chin. J. Chem.

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A spectrophotometric method for simultaneous analysis of methamidophos and fenitrothion was proposed by application of chemometrics to the spectral kinetic data, which was based upon the difference in the inhibitory effect of the two pesticides on acetylcholinesterase (AChE) and the use of 5,5'-dithiobis(2-nitrobenzoic acid) (DTNB) as a chromogenic reagent for the thiocholine iodide (TChI) released from the acetylthiocholine iodide (ATChI) substrate. The absorbance of the chromogenic product was measured at 412 nm. The different experimental conditions affecting the development and stability of the chromogenic product were carefully studied and optimized. Linear calibration graphs were obtained in the concentration range of 0.5-7.5 ng•mL -1 and 5-75 ng•mL -1 for methamidophos and fenitrothion, respectively. Synthetic mixtures of the two pesticides were analysed, and the data obtained processed by chemometrics, such as partial least square (PLS), principal component regression (PCR), back propagation-artificial neural network (BP-ANN), radial basis function-artificial neural network (RBF-ANN) and principal component-radial basis function-artificial neural network (PC-RBF-ANN). The results show that the RBF-ANN gives the lowest prediction errors of the five chemometric methods. Following the validation of the proposed method, it was applied to the determination of the pesticides in several commercial fruit and vegetable samples; and the standard addition method yielded satisfactory recoveries.

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Adsorptive stripping square wave voltammetry (Ad-SSWV) accomplished with second-order multivariate calibration

Cited by 52 publications

References 35 publications

Square‐Wave Voltammetry: A Review on the Recent Progress

Square‐Wave Voltammetry: A Review on the Recent Progress

Second‐Order Data Obtained from Differential Pulse Voltammetry: Determination of Lead in River Water Using Multivariate Curve Resolution‐Alternating Least‐Squares (MCR‐ALS)

Differential Kinetic Spectrophotometric Determination of Methamidophos and Fenitrothion in Water and Food Samples by Use of Chemometrics

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