Direct chronoamperometric determination of free available chlorine in soil samples using built-in diffusion layer coated glassy carbon electrode

Kiss, László; Kovács, Barna; Nagy, Géza

doi:10.1007/s10008-014-2596-7

Cited by 6 publications

(2 citation statements)

References 36 publications

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“…Electrochemical methods include the galvanometric methods and the potentiometric methods. Numerous galvanometric sensors using different electrode materials, including screen-printed electrochemical sensor [ 22 ], platinum, gold, glassy carbon [ 23 ], graphite [ 24 ], Prussian blue [ 15 ], poly MnTAPP-nano Au [ 25 ], carbon [ 26 ], polydopamine [ 27 ], and multi-walled carbon nanotubes [ 28 ], for monitoring TRC have been reported. Although these galvanometric methods perform quite well for TRC measurement in tap water, it is not suitable for detection of TRC in the electrolytically-treated BW due to the large deviation and unstable current arising from the differences in temperature, composition, and conductivity of the BW at different locations.…”

Section: Introductionmentioning

confidence: 99%

Potentiometric Sensor Based on Carbon Paste Electrode for Monitoring Total Residual Chlorine in Electrolytically-Treated Ballast Water

Zhang

Guo

et al. 2021

Sensors

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A new potentiometric sensor based on modified carbon paste electrode (CPE) was prepared for the sensitive and selective detection of total residual chlorine (TRC) in simulated electrolytically-treated ballast water (BW). The modified CPE was prepared using ferrocene (Fc) as the sensing species and paraffin oil as the binder. It is revealed that the addition of Fc can significantly shorten the response time and improve the reproducibility, selectivity, and stability of the sensor. The open circuit potential of the Fc-CPE is in linear proportion to the logarithm of TRC within the TRC concentration range from 1 mg∙dm−3 to 15 mg∙dm−3. In addition, the Fc-CPE sensor exhibits good selectivity to TRC over a wide concentration range of the possible co-exiting interference ions in seawater. The Fc-CPE electrode can be used as a convenient and reliable sensor for the continuous monitoring of TRC during the electrolytic treatment of BW.

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Section: Introductionmentioning

confidence: 99%

Potentiometric Sensor Based on Carbon Paste Electrode for Monitoring Total Residual Chlorine in Electrolytically-Treated Ballast Water

Zhang

Guo

et al. 2021

Sensors

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“…The CGO on the surface of the nanocolumns results in increased surface reactions, and the single crystal nanocolumns allow for efficient electron transfer for these reactions at the electrode surface. The electrochemical reduction mechanism of NaOCl at CGO-SnO 2 electrodes, which has been shown to occur at roughly -0.42 V (Kodera et al 2005;Olivé-Monllau et al 2010Thiagarajan et al 2011;Kiss et al 2014;Senthilkumar and Zen 2014;Tang et al 2014;Muñoz et al 2015;Salazar et al 2015;Wang and Anzai 2015) is as follows:…”

Section: Electrochemical Detection Of Free Chlorinementioning

confidence: 99%

Crumpled graphene oxide decorated SnO2 nanocolumns for the electrochemical detection of free chlorine

et al. 2017

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A crumpled graphene oxide-SnO 2 nanocolumn (CGO-SnO 2 ) composite electrode was fabricated using aerosol-based techniques. First, SnO 2 nanocolumn thin films were fabricated using an aerosol chemical vapor deposition (ACVD) technique. The surface of the nanocolumn was then decorated with CGO by electrospray deposition. The CGOSnO 2 electrode was utilized for the electrochemical detection and determination of the free chlorine concentration in aqueous solutions using linear sweep voltammetry (LSV) and amperometric i-t curve techniques. The CGO-SnO 2 electrodes worked through the direct electrochemical reduction of hypochlorite ions (ClO -) on the surface of the electrode, which was used to determine the free chlorine concentration. The electrodes operate over a wide linear range of 0.1-10.08 ppm, with a sensitivity of 2.69 lA lM -1 cm -2 . Further, selectivity studies showed that these electrodes easily conquer the electrochemical signals of other common ions in drinking water distribution systems, and only shows the electrochemical reduction signals of free chlorine. Finally, the CGO-SnO 2 electrodes were successfully employed for the detection of free chlorine in tap water solutions (St. Louis, MO 63130, USA) with a sensitivity of 5.86 lA lM -1 cm -2 . Overall, the sensor fabricated using simple and scalable aerosol-based techniques showed a comparable performance to previous studies on amperometric chlorine sensing using carbonbased electrodes.

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Direct Voltammetric Determination of Ascorbic Acid in Natural Paprika Fruits Without Sample Pretreatment

et al. 2015

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Direct electrochemical measuring technique for estimation of the ascorbic acid (AA) content of freshly cut yellow pepper fruits without special sample treatment was worked out. Dialysis membrane modified glassy carbon electrode combined with short time chronoamperometric measuring method was employed to eliminate the interfering effect of tortuosity and electrode fouling. Viscosity change inside the diffusion layer was taken in account. AA content of the fruit was found to be 114.5 mg/100 g, and it is shown that the metal ions derived from iron blade are able to accelerate the oxidation process significantly. Classical iodometric titration was applied as a reference method.

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Direct chronoamperometric determination of free available chlorine in soil samples using built-in diffusion layer coated glassy carbon electrode

Cited by 6 publications

References 36 publications

Potentiometric Sensor Based on Carbon Paste Electrode for Monitoring Total Residual Chlorine in Electrolytically-Treated Ballast Water

Potentiometric Sensor Based on Carbon Paste Electrode for Monitoring Total Residual Chlorine in Electrolytically-Treated Ballast Water

Crumpled graphene oxide decorated SnO2 nanocolumns for the electrochemical detection of free chlorine

Direct Voltammetric Determination of Ascorbic Acid in Natural Paprika Fruits Without Sample Pretreatment

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