Determination of chlorite in drinking water by differential pulse voltammetry on graphite

Pezzatini, Giovanni; Midili, Ilaria; Toti, G. L.; Loglio, Francesca; Innocenti, Massimo

doi:10.1007/s00216-004-2732-9

Cited by 10 publications

(5 citation statements)

References 30 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…As depicted in Figure , an oxidation and reduction peak at around 0.6 V vs Ag/AgCl pseudoreference was observed in presence of ClO 2 using both bare and CB‐SPE. In agreement with the literature , this couple of the peaks is ascribed to the redox reaction of chlorine dioxide/chlorite ion:

true reduction ClO_{2} + normale^{-} \to ClO_{2}^{-}

true oxidation ClO_{2}^{-} \to ClO_{2} + normale^{-}

…”

Section: Resultsmentioning

confidence: 99%

A Miniaturized Carbon Black‐based Electrochemical Sensor for Chlorine Dioxide Detection in Swimming Pool Water

et al. 2020

View full text Add to dashboard Cite

The recent trend of using sustainable disinfectants in water treatment sector boosted the employment of chlorine dioxide (ClO2) as green disinfectant. Indeed, this disinfectant is characterised by several attractive features such as the working capability in a wide range of pH and the absence of harmful by‐products. These characteristics confer to chlorine dioxide a prominent position between the disinfectants, thus analytical tools for on‐site detection are needed to customize the water treatment. Herein, we described the development of an innovative and cost‐effective carbon black modified screen‐printed electrode for amperometric quantification of chlorine dioxide in standard solution and in swimming pool water. The carbon black as working electrode nanomodifier allowed for the detection of chlorine dioxide at low applied potential, with linear range of 0.05–20 ppm, and a detection limit of 0.01 ppm. The matrix effect evaluation as well as the recovery study demonstrated the capability of this sensor for a cost‐effective detection of chlorine dioxide in swimming pool water, paving the way for the use of miniaturised electrochemical sensors in water treatment field.

show abstract

true reduction ClO_{2} + normale^{-} \to ClO_{2}^{-}

true oxidation ClO_{2}^{-} \to ClO_{2} + normale^{-}

…”

Section: Resultsmentioning

confidence: 99%

A Miniaturized Carbon Black‐based Electrochemical Sensor for Chlorine Dioxide Detection in Swimming Pool Water

et al. 2020

View full text Add to dashboard Cite

show abstract

“…FTIR spectrum was recorded in ATR apparatus with a PerkinElmer Spectrum Two spectrophotometer. 1 H-and 13 C-NMR measurements were performed on an Agilent 400 MHz NMR spectrometer. The NMR data (chemical shifts, ) were reported in ppm units with tetramethylsilane (TMS) as internal standard and deuterated chloroform (CDCl3) as solvent.…”

Section: Generalmentioning

confidence: 99%

“…The disinfection process of water sources by treatment with chlorine dioxide (ClO2) has brought a disadvantage along with many advantages [1][2][3][4]. The related process has been reviewed and all disinfection by-products (DBPs) have been identified in line with the studies in the literature [5][6][7].…”

Section: Introductionmentioning

confidence: 99%

Tetiklenmiş Floresans Özelliğe Sahip Bir Kimyasal Sensör Olarak Benzotiyazol Grubu Taşıyan Kaliksaren Sentezi

Bozkurt¹,

Halay²

2021

European Journal of Science and Technology

View full text Add to dashboard Cite

A fluorescence probe based on calix [4]arene-benzothiazole platform was rationally designed and synthesized for the detection of chlorite ion in aqueous solution. The sensor candidate was characterized by such spectroscopic techniques as FTIR, fluorescence, 1 Hand 13 C-NMR along with HRMS analysis. During the photophysical characterization experiments, it was observed that the synthesized sensor candidate exhibited weak fluorescence while its chlorite detection created a strong blue fluorescence facilitating sensitive detection. Besides, the related chlorite probe possessed a large Stokes shift (158 nm) with large pseudo Stoke's shift within the value of 242 nm that enables more accurate detection among other tested ions. Considering that chlorite anion is formed from chlorine dioxide as a result of reduction, and the importance of on-site monitoring of the concentration range regulated by many countries, it is obvious that our sensor has presented a convenient detection option as an alternative method to fulfil the daily monitoring requirements.

show abstract

“…A potential change was observed at a redox electrode based on reaction of the oxy-chlorine species with a Fe(III)-Fe(II) buffer; however, ClO − 2 ion interfered with the measurement if its concentration was higher than that of ClO − 3 . Pezzatini and Innocenti used pulse voltammetry with a carbon electrode to investigate the oxidation of ClO − 2 to ClO 2 (15). Although the detection limit, 0.07 mg/L, was comparable to that of ion chromatography with a conductivity detector, the electrode required extensive polishing and electrochemical pretreatment prior to measurements, a factor that precludes this approach from consideration as an in-line sensor.…”

Section: Introductionmentioning

confidence: 99%

Development of an automated on-line electrochemical chlorite ion sensor

Myers

Steinecker

Sandlin³

et al. 2012

Talanta

View full text Add to dashboard Cite

A sensor system for the automatic, in-line, determination of chlorite ion is reported. Electroanalytical measurements were performed in electrolyte-free liquids by using an electrochemical probe (EC), which enables in-line detection in high-resistance media such as disinfected water. Cyclic voltammetry scan rate studies suggest that the current arising from the oxidation of chlorite ion at an EC probe is mass-transfer limited. By coupling FIA with an EC probe amperometric cell, automated analysis was achieved. This sensor is intended to fulfill the daily monitoring requirements of the EPA DBP regulations for chlorite ion. Detection limits of 0.02-0.13 mg/L were attained, which is about one order of magnitude below the MRDL. The sensor showed no faradaic signal for perchlorate, chlorate, or nitrate. The lifetime and stability of the sensor were investigated by measuring calibration curves over time under constant-flow conditions. Detection limits of <0.1 mg/L were repeatedly achieved over a period of three weeks.

show abstract

Determination of chlorite in drinking water by differential pulse voltammetry on graphite

Cited by 10 publications

References 30 publications

A Miniaturized Carbon Black‐based Electrochemical Sensor for Chlorine Dioxide Detection in Swimming Pool Water

A Miniaturized Carbon Black‐based Electrochemical Sensor for Chlorine Dioxide Detection in Swimming Pool Water

Tetiklenmiş Floresans Özelliğe Sahip Bir Kimyasal Sensör Olarak Benzotiyazol Grubu Taşıyan Kaliksaren Sentezi

Development of an automated on-line electrochemical chlorite ion sensor

Contact Info

Product

Resources

About