Methods of stripping voltammetry in system of monitoring priority ecotocsicants in objects of an environment

Ковалева, С. В.; Gladyshev, V. P.; Nazarov, B. F.; Ainalov, M.M.; Gormakova, N.A.

doi:10.1109/korus.2005.1507680

Cited by 3 publications

(3 citation statements)

References 1 publication

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“…It is important to refer that the square wave voltammetry method assures an excellent low limit of metals' detection (some parts per billion, p.p.b.) [13,[16][17][18]. Fig.…”

Section: Measurement Systemmentioning

confidence: 98%

“…During the end of the 1950s, the importance of voltammetric methods decreased as they were replaced by spectroscopic methods [3,4]. After the 1970s, with the advent of low cost and accurate electronic components, namely operational amplifiers, the importance of voltammetric methods became strongly improved because the price of the instruments based on this measuring method got cheaper and their metrological characteristics improved substantially [5][6][7][8]. The working principle of voltammetry measurement methods (MM) is based on current measurements when a voltage sweep is applied between two electrodes, namely, the reference electrode (RE) and the working electrode (WE) placed in a cell filled with a water sample.…”

Section: Introductionmentioning

confidence: 99%

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Using A Segmented Voltage Sweep Mode and A Gaussian Curve Fitting Method to Improve Heavy Metal Measurement System Performance

Pereira

Postolache

Girão

2012

Metrology and Measurement Systems

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This paper presents a voltammetric segmented voltage sweep mode that can be used to identify and measure heavy metals' concentrations. The proposed sweep mode covers a set of voltage ranges that are centered around the redox potentials of the metals that are under analysis. The heavy metal measurement system can take advantage of the historical database of measurements to identify the metals with higher concentrations in a given geographical area, and perform a segmented sweep around predefined voltage ranges or, alternatively, the system can perform a fast linear voltage sweep to identify the voltammetric current peaks and then perform a segmented voltage sweep around the set of voltages that are associated with the voltammetric current peaks. The paper also includes the presentation of two auto-calibration modes that can be used to improve system's reliability and proposes the usage of a Gaussian curve fitting of voltammetric data to identify heavy metals and to evaluate their concentrations. Several simulation and experimental results, that validate the theoretical expectations, are also presented in the paper.

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“…It is important to refer that the square wave voltammetry method assures an excellent low limit of metals' detection (some parts per billion, p.p.b.) [13,[16][17][18]. Fig.…”

Section: Measurement Systemmentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Using A Segmented Voltage Sweep Mode and A Gaussian Curve Fitting Method to Improve Heavy Metal Measurement System Performance

Pereira

Postolache

Girão

2012

Metrology and Measurement Systems

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show abstract

“…Different laboratorial methods can be used to evaluate the low level concentration of heavy metals in water. Among them the most attractive for on-line measurements seem to be potentiometry, spectophotometry and voltammetry [5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

A Smart and Portable Solution for Heavy Metals Concentration Measurements

Pereira

Postolache

Girão

2007

2007 IEEE Instrumentation &Amp; Measurement Technology Conference IMTC 2007

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This paper presents a measurement solution for heavy metals concentrations. The proposed solution can be installed in stand-alone environmental monitoring stations and can incorporate measurement units for other water quality parameters such as temperature, conductivity, salinity, pH, dissolved oxygen and turbidity.A fully-automated monitoring station based on a low-cost potentiostat unit is presented together with a set of components and devices that can be used to provide auto calibration capabilities. A special attention is dedicated to data interpolation based on ANN curve ftting techniques and the interpolation results are compared with the ones obtained with traditional LMS polynomial interpolation techniques.

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Water Quality Monitoring and Associated Distributed Measurement Systems: An Overview

Postolache¹,

Girão²,

Pereira³

2012

Water Quality Monitoring and Assessment

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Methods of stripping voltammetry in system of monitoring priority ecotocsicants in objects of an environment

Cited by 3 publications

References 1 publication

Using A Segmented Voltage Sweep Mode and A Gaussian Curve Fitting Method to Improve Heavy Metal Measurement System Performance

Using A Segmented Voltage Sweep Mode and A Gaussian Curve Fitting Method to Improve Heavy Metal Measurement System Performance

A Smart and Portable Solution for Heavy Metals Concentration Measurements

Water Quality Monitoring and Associated Distributed Measurement Systems: An Overview

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