A binderless, covalently bulk modified electrochemical sensor: Application to simultaneous determination of lead and cadmium at trace level

Kempegowda, Raghu G.; Malingappa, Pandurangappa

doi:10.1016/j.aca.2012.03.053

Cited by 27 publications

(4 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…4A) exhibited a rapid and sensitive response to the variation of concentration of hydrazine with the increase of current linearly upto 400 µM (Fig. 4B) with a detection limit of 0.1 µM (3 σ) [25].…”

Section: Analytical Meritsmentioning

confidence: 97%

Polymer - Sn Composite : Development of Amperometric Hydrazine Sensor

Kempegowda¹

2023

Preprint

View full text Add to dashboard Cite

In the present work, an ease and green chemical protocol for the formation of polyaniline - Sn composite is proposed. The protocol involves the formation of composite by the simple mixing of tin nitrate and aniline at room temperature without using any agents for polymerisation process. The composite obtained has been well characterized with the aid of SEM with EDAX and XRD. Further, it has been used in the development of thin film electrodes on the surface of rigid glassy carbon electrode and subsequently employed as an electrochemical interface for the electroanalytical amperometric sensing of hydrazine model analyte system at trace concentration level. The developed interface showed good affinity towards the analyte in the dynamic range upto 400 µM with a detection limit of 0.1 µM (3ϭ). The stability, reproducibility has been proven to be good without any deviation in its electrochemical performance with least interference from commonly encountered foreign species. Finally, the practical utility of the developed sensor has been shown by determining the trace concentration levels of hydrazine from tap water.

show abstract

Section: Analytical Meritsmentioning

confidence: 97%

Polymer - Sn Composite : Development of Amperometric Hydrazine Sensor

Kempegowda¹

2023

Preprint

View full text Add to dashboard Cite

show abstract

“…Nanocomposite-based sensor materials have also been used to detect Chlorophenols [50]. In the past, optical fluorescent sensor materials have been found to sense Hg(II), Fe (III), Zn 2+ [51][52][53]. Piezo-based sensor materials have been found to sense flux [54] [59] [60] and ADCP [61] have been reported.…”

Section: Sensing Materials In Water Quality Control and Monitoringmentioning

confidence: 99%

“…3have been found to sense by Nickel-based [64] and microwave-based [65] materials. The technological advancement has led to the development of other sensing materials such as Clark type microelectrodes for sensing N 2 O [66], RAE electrochemical element for determining H 2 S [67], an electrode with graphite particles for detecting Pb(II), Cd(II) [53], carbon electrode with silver [Fe(CN) 6 ] 3nanoparticles for sensing CN - [68], ATR-imprinted p(HEMA-phenol) for determining Atrazine [69], ZnO/Ag nanoarrays for sensing Hg (II) [70], Triphenylmethane dyes for detecting organic solvents and NH 3 [71], ZnO/CNT for sensing N 2 H 4 , C 6 H 6 O [72].…”

Section: Sensing Materials In Water Quality Control and Monitoringmentioning

confidence: 99%

Gas Sensor Applications in Water Quality Monitoring and Maintenance

Yadav

Indurkar

2021

Water Conserv Sci Eng

View full text Add to dashboard Cite

Industrial and population expansion in the last few decades has been a critical contributor to water quality degradation. Some of the gases emanating from water treatment plants are toxic and flammable, which need to be identified, such as hydrogen sulphide, carbon dioxide, methane, and carbon monoxide. Water quality monitoring systems must be developed to meet legal, environmental, and social requirements. Monitoring water quality is difficult due to the variability, nature, and low concentrations of contaminants that need to be detected. The gas emanating from these treatment processes plays an essential role in water treatment, monitoring, and control. Gas sensors can be used as a safety device in the water purification process. The gas sensors receive input signals in chemical, physical, and biological stimulus and convert them into electrical signals. The gas sensors can be installed in different wastewater treatment processes. In this review, we present state-of-the-art progresses, landmark developments, and technological achievements that led to the development of gas sensors for evaluating water quality. The role of gas sensors in water quality maintenance and monitoring is discussed, and different analytes and their detection technologies and sensing materials outlining their advantages and disadvantages have been summarized. Finally, a summary and outlook for future directions of gas sensors in water quality monitoring and maintenance are provided.

show abstract

“…Chemical sensors represent a powerful analytical tool for simple, inexpensive, reliable, rapid, and selective detection of heavy metals [66][67][68][69][70]. Currently, chemical sensors are widely used in various applications that include biomedical instrumentation, detection of industrial emissions, electrochemical sensing devices, environmental pollution, and water quality monitoring [71,72].…”

Section: Introductionmentioning

confidence: 99%

Chitosan and Metal Oxide Functionalized Chitosan as Efficient Sensors for Lead (II) Detection in Wastewater

Boultif,

Dehchar,

Belhocine

et al. 2023

Separations

View full text Add to dashboard Cite

The work presented in this paper describes the preparation and the electrochemical application of functionalized chitosan-entrapped carbon paste electrodes (CH/CPE) for lead ions (Pb2+) detection in industrial wastewater. The chitosan was first functionalized using TiO2 and CuO, which were both metal oxides that were obtained by extracting it from waste products derived from shrimp shells. The analytical performance of the as-prepared electrodes, CH/CPE, TiO2-CH/CPE, and NiO-CH/CPE, for the detection of lead (II) was examined using electrochemical impedance spectroscopy (EIS) technique in the 0.1 M KNO3 electrolyte solution. The effect of experimental conditions, including polarization potential, frequency, and pH, are optimized to maximize the sensitivity of the measurements. The developed impedimetric sensors provided a linear response over a concentration range of 10−6 to 10−4 M with a detection limit of 3.10−7 M based on S/N = 3. The DFT computational analysis demonstrated that chitosan biopolymer possesses the ability to adsorb Pb (II) ions that are present in wastewater. Chitosan and the derivatives of chitosan, have the potential to remove heavy metals from industrial effluent in a manner that is both economical and eco-friendly to the environment. Chitosan is a biopolymer that is abundantly renewable.

show abstract

A binderless, covalently bulk modified electrochemical sensor: Application to simultaneous determination of lead and cadmium at trace level

Cited by 27 publications

References 38 publications

Polymer - Sn Composite : Development of Amperometric Hydrazine Sensor

Polymer - Sn Composite : Development of Amperometric Hydrazine Sensor

Gas Sensor Applications in Water Quality Monitoring and Maintenance

Chitosan and Metal Oxide Functionalized Chitosan as Efficient Sensors for Lead (II) Detection in Wastewater

Contact Info

Product

Resources

About