Ultra sensitive detection of Cd (II) using reduced graphene oxide/carboxymethyl cellulose/glutathione modified electrode

Shanmugapriya, T.; Dhanalakshmi, N.; Thennarasu, Sathiah; Thinakaran, N.

doi:10.1016/j.carbpol.2018.06.024

Cited by 32 publications

(30 citation statements)

References 36 publications

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“…The electrodes used in this method are all modified with nanomaterials on their surface. Based on a graphene-modified electrode, an electrochemical detection of Cd 2+ was performed by square wave anodic stripping voltammetry (SWASV) [56]. A thoroughly cleaned glassy-carbon electrode (GCE) was adopted to be the working device.…”

Section: Working-electrode-based Platformsmentioning

confidence: 99%

Heavy Metal Ion Detection Platforms Based on a Glutathione Probe: A Mini Review

2019

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Globally, heavy metal ion (HMI) contamination is on the rise, posing an ever-increasing risk to ecological and human health. In recent years, great research effort has been devoted to the sensitive detection and quantitative analysis of HMIs. Low cost, sensitive, selective, and rapid methods for HMI detection are of growing demand, and HMI biosensors have great potential in meeting this need due to their timeliness, cost-effectiveness and convenience in operation. Glutathione is known for its strong ability to bind with toxic heavy metal ions, in addition to its water solubility, stable activity and ready availability. As a result, glutathione is becoming a molecular probe of choice in the preparation of sensors for sensitive, affordable, and accessible HMI detection. This review summarizes the results from various glutathione-based HMI detection strategies reported in recent years, which are categorized according to their signal transduction methods. Their operation and implementation, along with figures of merit such as limit of detection, selectivity, and response time, are discussed and compared. Based on the review, both individual HMI detection and simultaneous detection of multiple HMIs can be realized under specific reaction conditions, showing the great potential of glutathione-based detection to realize various types of practical HMI detection.

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Section: Working-electrode-based Platformsmentioning

confidence: 99%

Heavy Metal Ion Detection Platforms Based on a Glutathione Probe: A Mini Review

2019

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“…Thus, it has been also reported that CMC can be used in the modification of electrodes to construct electrochemical sensors for the detection of heavy metal ions. For example, Priya et al firstly used a reduced graphene oxide/CMC/glutathione composite modified electrode to detect Cd 2 + by SWASV [34], and then used a porous graphene/CMC/fondaparinux nanocomposite modified electrode to detect both Cd 2 + and Pb 2 + also by SWASV [35]. As can be seen from these examples, in its application for the treatment or electrochemical detection of heavy metal ions, CMC usually forms various kinds of composites with other functional materials, instead of being used alone.…”

Section: Introductionmentioning

confidence: 99%

Highly Hydrophilic Polymer Composite Modified Electrode for Trace Copper Detection Based on Synergetic Electrostatic Attractions and Chelating Interactions

Wang

Liu

et al. 2020

Electroanalysis

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A new electrochemical sensor for Cu 2 + detection by square wave voltammetry with high sensitivity has been constructed, based on a composite of sodium carboxymethyl cellulose and Nafion. Starting from these two polymers that are rich of hydrophilic groups in backbones, a highly negative-charged composite has been easily prepared, which displays outstanding ability to adsorb and enrich Cu 2 + onto the electrode surface through both electrostatic attractions and chelating interactions. After optimizing test conditions, this new sensor exhibits a good linear signal response to Cu 2 + in a concentration range from 1.0 nΜ to 50.0 nM with a limit of detection of 0.6 nM (S/N = 3), as well as good antiinterference for commonly co-existing metal ions. Besides, this new electrochemical copper sensor has been successfully applied to detect trace Cu 2 + in natural water samples with satisfactory recoveries of 98-104 %. These findings provide a new simple but effective way for the determination of heavy metal ions in environmental pollutants.

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“…Thus, rapid identification and quantification of Cd(II) in food and environmental samples has attracted widespread attention and is of paramount importance. The main methods for detecting trace amounts of Cd(II) are graphite furnace atomic absorption spectrometry (GFAAS) [8], inductively coupled plasma mass spectrometry (ICP-MS) [9], electrochemical sensing [10,11,12], surface-enhanced Raman spectroscopy (SERS) [13], fluorescence [14], and colorimetry [15]. Among these methods, GFAAS, ICP-MS, and SERS have excellent sensitivities and wide availabilies in laboratories, but colorimetry is more suitable for on-site screening.…”

Section: Introductionmentioning

confidence: 99%

Highly Selective, Aptamer-Based, Ultrasensitive Nanogold Colorimetric Smartphone Readout for Detection of Cd(II)

Liang

Wang³

et al. 2019

Molecules

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A highly selective and sensitive method for Cd(II) detection was developed based on aptamer and gold nanoparticles (AuNPs) combined with a colorimetric smartphone readout. The experimental conditions such as reaction time of polydiene dimethyl ammonium chloride (PDDA) and AuNPs, PDDA dose, time of aptamer and PDDA incubation, and aptamer concentration were optimized. Under the optimized conditions, the color and red(R) value of the solution was concentration-dependent on Cd(II). The proposed method exhibited a linear range of 1–400 ng/mL (r2 = 0.9794) with a limit of detection (LOD) of 1 ng/mL. This method had been successfully applied to test and quantify Cd(II) in water and rice samples, and the results were in full agreement with those from the atomic absorption spectrometer. Therefore, low-cost colorimetry demonstrated its potential for practical application in visual or quantitative detection with a smartphone. This approach can be readily applied to other analytes.

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Ultra sensitive detection of Cd (II) using reduced graphene oxide/carboxymethyl cellulose/glutathione modified electrode

Cited by 32 publications

References 36 publications

Heavy Metal Ion Detection Platforms Based on a Glutathione Probe: A Mini Review

Heavy Metal Ion Detection Platforms Based on a Glutathione Probe: A Mini Review

Highly Hydrophilic Polymer Composite Modified Electrode for Trace Copper Detection Based on Synergetic Electrostatic Attractions and Chelating Interactions

Highly Selective, Aptamer-Based, Ultrasensitive Nanogold Colorimetric Smartphone Readout for Detection of Cd(II)

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