Simultaneous flow injection analysis of cadmium and lead with differential pulse voltammetric detection

Alpízar, Jesús; Cladera, A.; Cerdà, Vı́ctor; Lastres, E.; García, Luciano; Catasús, M.

doi:10.1016/s0003-2670(96)00547-8

Cited by 22 publications

(9 citation statements)

References 21 publications

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“…43 Simultaneous determination of Cd and Pb was described with differential pulse voltammetric detection using a static mercury-drop working electrode with experimental data processing using artificial neural networks. 44 In flow systems also electrochemical stripping multicomponent techniques were used. Fast-scan (5 V/s) anodic stripping voltammetry (ASV) with Pt-based mercury microelectrodes 45 and square wave ASV at Hg-plated iridium microelectrodes 27,46 were employed for simultaneous determination of Cd and Pb.…”

Section: Flow Analysis With Electrochemical Detectionsmentioning

confidence: 99%

Electroanalytical Flow Measurements

Trojanowicz

2005

Annali di Chimica

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Section: Flow Analysis With Electrochemical Detectionsmentioning

confidence: 99%

Electroanalytical Flow Measurements

Trojanowicz

2005

Annali di Chimica

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“…A FIA system with pulsed amperometric detection was reported for simultaneous non-enzymatic determination of glucose and fructose with a Nafion-coated Au electrode [97]. Simultaneous determination of Cd and Pb was described with differential pulse voltammetric detection using a static mercury-drop working electrode with experimental data processing using artificial neural networks [98].…”

Section: Multicomponent Determinations In Flow Electroanalysis Includmentioning

confidence: 99%

Electroanalytical Flow Measurements–Recent Advances

2003

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As general trends in current development of chemical analysis, including electroanalysis, one can indicate a search for methods fast and multianalyte, for miniaturized measuring devices, mechanization and automation of analytical processes. In all these trends a significant role is played by measurements in flow conditions. The major advantage of flow electroanalysis is a possibility of utilizing a kinetic discrimination in potentiometric measurements and enhancement of mass transport in voltammetric techniques. Flow injection techniques provide shortening of time of a single analytical determination due to reproducible use of transient signal from the detector without need of obtaining a steady-state equilibrium signal. Electrochemical detection in HPLC gives often improved selectivity and detection limit for electroactive solutes, whereas in capillary electrophoresis it allows a convenient design of portable, integrated chips for field application. This review presents state-of-the -art of flow electroanalysis based on 226 cited literature references

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“…Although a number of multivariate calibration approaches can be applied to the simultaneous determination of certain heavy metals such as classical least squares (CLS), principal component regression (PCR), partial least squares (PLS), iterative target transformation factor analysis (ITTFA) [32], and artificial neural networks (ANNs) [33], PLS tends to give the most accurate predictions due to its ability to account for the variance in the concentration (dependent) matrix [17]. ANNs have been shown to perform marginally better than PLS [34] but training of the model is prolonged due to an infinite number of possible outcomes as a result of the initialization of the weights and biases with random numbers within a specific range [19].…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Quantitative Determination of Cadmium, Lead, and Copper on Carbon‐Ink Screen‐Printed Electrodes by Differential Pulse Anodic Stripping Voltammetry and Partial Least Squares Regression

2008

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Water is a vital commodity for every living entity on the planet. However, water resources are threatened by various sources of contamination from pesticides, hydrocarbons and heavy metals. This has resulted in the development of concepts and technologies to create a basis for provision of safe and high quality drinking water. This paper focuses on the simultaneous quantitative determination of three common contaminants, the heavy metals cadmium, lead and copper. Multivariate calibration was applied to voltammograms acquired on in-house printed carbon-ink screenprinted electrodes by the highly sensitive electrochemical method of differential pulse anodic stripping voltammetry (DPASV). The statistically inspired modification of partial least squares (SIMPLS) algorithm was employed to effect the multivariate calibration. The application of data pretreatment techniques involving range-scaling, mean-centering, weighting of variables and the effects of peak realignment are also investigated. It was found that peak realignment in conjunction with weighting and SIMPLS led to the better overall root mean square error of prediction (RMSEP) value. This work represents significant progress in the development of multivariate calibration tools in conjunction with analytical techniques for water quality determination. It is the first time that multivariate calibration has been performed on DPASV voltammograms acquired on carbon-ink screen-printed electrodes.

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Simultaneous flow injection analysis of cadmium and lead with differential pulse voltammetric detection

Cited by 22 publications

References 21 publications

Electroanalytical Flow Measurements

Electroanalytical Flow Measurements

Electroanalytical Flow Measurements–Recent Advances

Simultaneous Quantitative Determination of Cadmium, Lead, and Copper on Carbon‐Ink Screen‐Printed Electrodes by Differential Pulse Anodic Stripping Voltammetry and Partial Least Squares Regression

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