A review on various electrochemical techniques for heavy metal ions detection with different sensing platforms

Bansod, Babankumar S.; Kumar, T. Jyothish; Thakur, Ritula; Rana, Shakshi; Singh, Inderbir

doi:10.1016/j.bios.2017.03.031

Cited by 842 publications

(350 citation statements)

References 137 publications

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“…On the other hand, the eye‐catching importance of ions in industry cannot be neglected. Water pollution is the other most harmful effects of metals in industry, which is a great concern for both society and government …”

Section: Introductionmentioning

confidence: 99%

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A novel optical probe based on d‐penicillamine‐functionalized graphene quantum dots: Preparation and application as signal amplification element to minoring of ions in human biofluid

Pashazadeh-Panahi

Hasanzadeh

Eivazzadeh‐Keihan

2020

J of Molecular Recognition

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In this study, d‐penicillamine‐functionalized graphene quantum dots (DPA‐GQD) has been synthesized, which significantly increases the fluorescence intensity of GQD. We used this simple fluorescent probe for metal ions detection in human plasma samples. Designed DPA‐GQD respond to Hg2+, Cu2+, Au2+, Ag+, Co2+, Zn2+, and Pb2+ with high sensitivity. The fluorescence intensity of this probe decreased significantly in the presence of metal ions such as, Hg2+, Cu2+, Au2+, Ag+, Co2+, Zn2+, and Pb2+. In this work, a promising probe for ions monitoring was introduced. Moreover, DPA‐GQD probe has been tested in plasma samples. The functionalized DPA‐GQDs exhibits great promise as an alternative to previous fluorescent probes for bio‐labeling, sensing, and other biomedical applications in aqueous solution.

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Section: Introductionmentioning

confidence: 99%

“…Considering the importance of metal ions, both in the field of health and industry, development of accurate and sensitive detection methods is in the center of attention …”

Section: Introductionmentioning

confidence: 99%

A novel optical probe based on d‐penicillamine‐functionalized graphene quantum dots: Preparation and application as signal amplification element to minoring of ions in human biofluid

Pashazadeh-Panahi

Hasanzadeh

Eivazzadeh‐Keihan

2020

J of Molecular Recognition

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“…This includes analysing metal contaminants in wastewater using: biosensors (Eltzov et al 2015), optical systems (Gómez-de Pedro et al 2014) and electrochemical techniques (Bansod et al 2017). However, further work is needed to develop simple, reliable, and cost-effective techniques for remote detection of pollutants, to better understand processes that regulate metal dispersion and allow for an emergency response to unexpected events (Byrne et al 2013;Cidu et al 2011;Jones et al 2013;Lynch et al 2017).…”

Section: Introductionmentioning

confidence: 99%

Comparison of Electromagnetic Wave Sensors with Optical and Low-frequency Spectroscopy Methods for Real-time Monitoring of Lead Concentrations in Mine Water

et al. 2018

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The feasibility of using novel electromagnetic wave sensors for real-time monitoring of metal pollution in water was assessed. Five solutions with different concentrations of lead (0, 1, 10, 50, 100 mg/L) were measured using several sensing methods: UV-Vis spectroscopy, low frequency capacitance and resistance measurements, and two sensing systems based on microwave technology. With this last approach, two sensing devices were used: a resonant cavity and a planar sensor with gold interdigitated electrode design printed on a PTFE substrate with a protective PCB lacquer coating. Results confirmed the ability of these systems to quantify the lead concentration as changes in spectrum signal at specific frequencies of the electromagnetic spectrum. Spectra were unique, with clearly observed shifts in the resonant frequencies of the sensors when placed in direct contact with different lead solutions, demonstrating the possibility of continuous monitoring with great sensitivity, selectivity, and high spatial and temporal resolution. Consequently, determination of trace and toxic metals using microwave spectroscopy is a promising alternative to traditional grab-sampling and laboratory based analyses. On-line and continuous monitoring of real-time metal concentrations offers the potential for a more effective emergency response and the platform for better scientific understanding and remediation of contaminated mine drainage.

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“…Electrochemical techniques such as conductivity, pulsed amperometry, and impedance have been used to quantify metal ions and even non-electrolytes (Bansod et al, 2017;Mefteh et al, 2015;Shervedani and Seyed, 2006;Zazoua et al, 2008;Gabrielli et al, 2004). Conductivity measures the resistance across two parallel plates using an alternating voltage with a frequency of 1-3 kHz.…”

Section: Introductionmentioning

confidence: 99%

“…This method using stainless steel plates has been applied in determining lithium (Adriana and Vannucci, 2008). Heavy metals such as mercury ions have been determined by EIS with a reported 20 parts per trillion (ppt) detection limit using nanoparticle modified electrodes including DNA (Bansod et al, 2017;Zhang et al, 2017). Silver ions have also been determined using modified electrodes and have detection limits ranging from 0.01 to 170 nM (Yang et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Determining detection limits of aqueous anions using electrochemical impedance spectroscopy

Scott

Alseiha

2017

J Anal Sci Technol

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Background: Pulsed amperometric detection is a relatively new method for detection of ions and especially nonelectrolytes such as carbohydrates in aqueous solutions. Pulsed amperometric detection relies on a redox reaction while electrochemical impedance simply measures the real and capacitive resistant of the solution. There is a correlation between the real impedance of a solution and the ionic strength of the solution.Method: This work explores measuring real impedance of pure water as a function of temperature from 25.0 to 60.0°C to determine the relationship between impedance and temperature. Maintaining temperature at 25.0°C, solutions of sodium chloride, potassium carbonate, sodium sulfate acetate and bicarbonate have been measured using impedance spectroscopy. Results: Regression analysis shows that measuring anions using impedance spectroscopy and simple stainless steel cylinders that detection limits at the parts per trillion (ppt) level are possible. There was no statistical difference when comparing impedance values of the same concentration of acetate and chloride in solution, showing real impedance is not dependent on ion size. However, ions with higher charge do result in lower impedance measurements. Conclusions: This work establishes the use of simple, small, robust stainless steel cylinders and impedance measurements following separation for the identification and quantification of ions in solution.

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A review on various electrochemical techniques for heavy metal ions detection with different sensing platforms

Cited by 842 publications

References 137 publications

A novel optical probe based on d‐penicillamine‐functionalized graphene quantum dots: Preparation and application as signal amplification element to minoring of ions in human biofluid

A novel optical probe based on d‐penicillamine‐functionalized graphene quantum dots: Preparation and application as signal amplification element to minoring of ions in human biofluid

Comparison of Electromagnetic Wave Sensors with Optical and Low-frequency Spectroscopy Methods for Real-time Monitoring of Lead Concentrations in Mine Water

Determining detection limits of aqueous anions using electrochemical impedance spectroscopy

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