An Electrochemical Sensor for Determination of Ultratrace Cd, Cu and Hg in Water Samples by Modified Carbon Paste Electrode Base on a New Schiff Base Ligand

Nourifard, Farzaneh; Payehghadr, Mahmood; Kalhor, Mehdi; Nejadali, Azizallah

doi:10.1002/elan.201500333

Cited by 21 publications

(11 citation statements)

References 27 publications

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“…Subsequently, the reduction and oxidation take place at the electrode surface. Based on this, the following plausible working mechanism can be proposed [35].…”

Section: Structural and Morphological Characterization Of Mn 3 O 4 Nanoparticlesmentioning

confidence: 99%

One-pot synthesis of Mn3O4/graphitic carbon nanoparticles for simultaneous nanomolar detection of Pb(II), Cd(II) and Hg(II)

et al. 2017

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In this paper, a facile one-step sucrose-nitrate decomposition method has been proposed to synthesis Mn 3 O 4 nanoparticles (Mns)/graphitic carbon. The prepared material has been characterized by X-ray diffraction, Fourier transform infrared spectrometer, surface area analysis and transmission electron microscopy. The prepared Mns/graphitic carbon is drop-casted on glassy carbon electrode to allow the fabrication of electrochemical sensors for the simultaneous detection of Pb(II), Cd(II) and Hg(II) at nanomolar (nM) levels in aqueous solutions via differential pulse anodic stripping voltammetry. The proposed Mns/graphitic carbon sensors exhibit a wide linear range from 20 to 680 nM towards the simultaneous sensing of Cd(II), Pb(II) and Hg(II), and the corresponding limits of detection were found to be 0.48 9 10 -11 , 9.66 9 10 -11 and 0.51 9 10 -11 M, respectively. The practical application of the proposed sensor is evaluated within a real battery, industrial and chrome plating effluents.

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“…Subsequently, the reduction and oxidation take place at the electrode surface. Based on this, the following plausible working mechanism can be proposed [35].…”

Section: Structural and Morphological Characterization Of Mn 3 O 4 Nanoparticlesmentioning

confidence: 99%

One-pot synthesis of Mn3O4/graphitic carbon nanoparticles for simultaneous nanomolar detection of Pb(II), Cd(II) and Hg(II)

et al. 2017

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“…AAS is a very sensitive method; however, it has many disadvantages including cost and inability to be miniaturized. In contrast, electrochemical methods are low cost and can be applied in situ [ 1 , 3 , 11 , 12 , 13 ]. The gold standard of electrochemistry is to perform a measurement with a mercury drop electrode.…”

Section: Introductionmentioning

confidence: 99%

Determination of Zinc, Cadmium, Lead, Copper and Silver Using a Carbon Paste Electrode and a Screen Printed Electrode Modified with Chromium(III) Oxide

Koudelková

Syrový

Ambrožová

et al. 2017

Sensors

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In this study, the preparation and electrochemical application of a chromium(III) oxide modified carbon paste electrode (Cr-CPE) and a screen printed electrode (SPE), made from the same material and optimized for the simple, cheap and sensitive simultaneous determination of zinc, cadmium, lead, copper and the detection of silver ions, is described. The limits of detection and quantification were 25 and 80 µg·L−1 for Zn(II), 3 and 10 µg·L−1 for Cd(II), 3 and 10 µg·L−1 for Pb(II), 3 and 10 µg·L−1 for Cu(II), and 3 and 10 µg·L−1 for Ag(I), respectively. Furthermore, this promising modification was transferred to the screen-printed electrode. The limits of detection for the simultaneous determination of zinc, cadmium, copper and lead on the screen printed electrodes were found to be 350 µg·L−1 for Zn(II), 25 µg·L−1 for Cd(II), 3 µg·L−1 for Pb(II) and 3 µg·L−1 for Cu(II). Practical usability for the simultaneous detection of these heavy metal ions by the Cr-CPE was also demonstrated in the analyses of wastewaters.

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“…Therefore, we also evaluated the performance of our system for the simultaneous electroanalytical determination of lead, cadmium, zinc, and copper using carbon DEP chips and arsenic and mercury using gold DEP chips. The application of chemically-modified carbon working electrodes has provided the simultaneous detection of heavy metals in water samples with enhanced specificity [ 28 , 29 ]. Bismuth is an environmentally-friendly element with a property to form “fused alloys” with heavy metals which facilitates the nucleation process during accumulation of heavy metals.…”

Section: Resultsmentioning

confidence: 99%

DEP-On-Go for Simultaneous Sensing of Multiple Heavy Metals Pollutants in Environmental Samples

Biyani

Tsuchihashi³

et al. 2016

Sensors

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We describe a simple and affordable “Disposable electrode printed (DEP)-On-Go” sensing platform for the rapid on-site monitoring of trace heavy metal pollutants in environmental samples for early warning by developing a mobile electrochemical device composed of palm-sized potentiostat and disposable unmodified screen-printed electrode chips. We present the analytical performance of our device for the sensitive detection of major heavy metal ions, namely, mercury, cadmium, lead, arsenic, zinc, and copper with detection limits of 1.5, 2.6, 4.0, 5.0, 14.4, and, 15.5 μg·L−1, respectively. Importantly, the utility of this device is extended to detect multiple heavy metals simultaneously with well-defined voltammograms and similar sensitivity. Finally, “DEP-On-Go” was successfully applied to detect heavy metals in real environmental samples from groundwater, tap water, house dust, soil, and industry-processed rice and noodle foods. We evaluated the efficiency of this system with a linear correlation through inductively coupled plasma mass spectrometry, and the results suggested that this system can be reliable for on-site screening purposes. On-field applications using real samples of groundwater for drinking in the northern parts of India support the easy-to-detect, low-cost (<1 USD), rapid (within 5 min), and reliable detection limit (ppb levels) performance of our device for the on-site detection and monitoring of multiple heavy metals in resource-limited settings.

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An Electrochemical Sensor for Determination of Ultratrace Cd, Cu and Hg in Water Samples by Modified Carbon Paste Electrode Base on a New Schiff Base Ligand

Cited by 21 publications

References 27 publications

One-pot synthesis of Mn3O4/graphitic carbon nanoparticles for simultaneous nanomolar detection of Pb(II), Cd(II) and Hg(II)

One-pot synthesis of Mn3O4/graphitic carbon nanoparticles for simultaneous nanomolar detection of Pb(II), Cd(II) and Hg(II)

Determination of Zinc, Cadmium, Lead, Copper and Silver Using a Carbon Paste Electrode and a Screen Printed Electrode Modified with Chromium(III) Oxide

DEP-On-Go for Simultaneous Sensing of Multiple Heavy Metals Pollutants in Environmental Samples

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