Construction of a modified carbon paste electrode for the highly selective simultaneous electrochemical determination of trace amounts of mercury(II) and cadmium(II)

Electrochemical determination of inorganic mercury and arsenic—A review

“…MWCNT-CPE was modified with a Schiff base. This electrode performed simultaneous detection of Hg(II) and Pb (II) in a number of samples achieving a 0.18 µg/L limit of detection(Afkhami et al 2012b).…”

Fluorene functionalized nanoporous SBA-15 incorporated into carbon paste electrode for trace copper determination

“…The main components of the past of these type electrodes are powdered carbon (graphite), mineral (paraffin) oils and the ionophore. Each paste component plays a special role in the paste function [25][26][27][28][29]. Since the sensitivity and selectivity degree of a CPE is greatly related to the carbon paste ingredients, the carbon paste composition influence on the potential responses of the copper ion sensor was studied.…”

Amperometric determination of nanomolar mercury(II) by layered double nanocomposite of zinc/aluminium hydroxide-3(4-methoxyphenyl)propionate modified single-walled carbon nanotube paste electrode

“…8b shows that the amperometric response is [26]. At higher pH medium, mercury(II) is hydrolysed [49]. Hence, pH 4.0 is selected as medium pH in the subsequent experiments.…”

“…The Zn/Al-LDH-MPP/SWCNT CV 1.0 × 10 −7 -1.0 × 10 −3 1.0 × 10 −9 This work 1.0 × 10 −9 -1.0 × 10 −7 SBA-15 nanostructured silica/carbon paste electrode DPASV 2.0 × 10 −6 -1.0 × 10 −5 4.7 × 10 −7 [36] SWCNT-PhSH-modified gold electrode SWASV 5.0 × 10 −9 -9 × 10 −8 3.0 × 10 −9 [45] Nitro benzoyldiphenyl methylene phosphorane/carbon paste electrode SWASV -4.1 × 10 −8 [49] Chitosan/carbon nanotubes paste electrode ASV 6.7 × 10 −9 -8.3 × 10 −8 2.4 × 10 −9 [51] BMIM·BF 4 /MWCNTs ISE 1.0 × 10 −4 -5.0 × 10 −9 2.5 × 10 −9 [52] Bismuth-film/carbon paste electrode SWASV 2.0 × 10 −8 -9 × 10 −8 2.5 × 10 −7 [53] Fluorescent carbon nanoparticles Fluorescent sensing 5 × 10 −8 -1 × 10 −10 2.3 × 10 −8 [54] Single-labelled fluorescent oligonucleotide probe PhSH thiophenol, CV cyclic voltammetry, SWASV square wave anodic stripping voltammetry, DPASV differential pulse anodic stripping voltammetry, ASV anodic stripping voltammetry, ISE ion selective electrode, BMIM·BF4 1-n-butyl-3-methylimidazolium tetrafluoroborate, LOD limit of detection The repeatability measurement of the developed electrode was employed by repeatedly examining the voltammetric response of a single electrode in five different 1 × 10 −3 M Hg 2+ at optimum condition. The RSD obtained for the measurement was 0.61 %.…”