In-situ preconcentration, and electrochemical sensing of Zinc(II) and Copper(II) based on ionic liquid mediated hollow fiber-modified pencil graphite electrode using response surface methodology
Journal Title: Eurasian Chemical Communications - Year 2019, Vol 1, Issue 0
Abstract
A single-use electrochemical sensor using ionic liquid mediated hollow fiber-graphite working electrode was fabricated for the first time. The screening tool was developed by coupling this electrode with differential pulse voltammetry (DPV) for in-situ pre-concentration and determination of Zn(II) and Cu(II). In our plot, porous polypropylene hollow fiber membrane divided into pieces of 2 cm, then fiber's lumen and pores was satiated with homogeneous mixture of reduced graphene oxide (rGO) and three types used ionic liquids:(1-ethyl-3-methylimidazolium tetrafuoroborate), (1-butyl-3-methylimidazoliumhexafluorophosphate) and (1-butyl-2,3-dimethylimidazolium hexafluorophosphate) individually. Thereafter, a pencil graphite rod was placed inside the fiber. Fabricated sensors used for single-step simultaneous purification and determination of Zn(II) and Cu(II) ions from water samples. The response surface method (RSM) was used as the basis of the design and analysis of the experiments. Parameters that were most important in separation part of study such as: molar mass of ionic liquids, amount of nanoparticle and sonication time have been investigated. Analysis of variance (ANOVA) and RSM contour plots were presented for effect of all factors (input parameters) on the maximum current of differential pulse voltammetry (DPV) peaks (output responses). The results disclosed that the metal removal was impressed by the molar mass of ionic liquids, amount of nanoparticle and sonication time respectively. The efficiency specifications of this procedure were evaluated by calculating precision and response linearity. Under the optimal experimental conditions linear concentration ranges of 0.9–550µgL-1 and 0.7–500 µgL-1 were obtained for Zn(II) and Cu(II) ions respectively. The reported limit of detection for Zn(II) and Cu(II) were 0.27 and 0.21µgL-1 with relative standard deviations (RSD) 3.2%, and 4.4%, respectively. In addition, this sensor was successfully applied to real water samples.
Authors and Affiliations
Ghobad Mansouri, Mohammd Bagher Gholivand, Zarrin Eshaghi
Keywords
Related Articles
- EP ID EP658127
- DOI 10.33945/SAMI/ECC.2019.5.10
- Views 157
- Downloads 0
A clean and efficient synthesis of spiro[4H-pyran-oxindole] derivatives catalyzed by egg shell
Egg shell has been utilized as a natural, green, reusable and eco-friendly reagent for the synthesis of spiro[4H-pyran-oxindole] derivatives by one-pot multicomponent reaction of isatins, 1,3-diketones, and malononitrile...
Cobalt oxide nanoparticles by solid-state thermal decomposition: Synthesis and characterization
In this study, mononuclear octahedral cobalt(III) Schiff base complex [CoL3], L = (5-bromo-2-hydroxybenzyl-2-furylmethyl)imine, was synthesized from the reaction of Co(NO3)2•6H2O and the Schiff base ligand L in methanol...
Use of data mining in the corrosion classification of pipelines in catalytic reforming units (CRU)
Nowadays, computational tools for analyzing and collecting data in the operation of petroleum units are essential. One of the methods is the classification or regression is to step in the overall process of knowledge ext...
Selective trimethylsilylation of alcohols and phenols with hexamethyldisilazane catalyzed by LaCoO3 perovskite
Trimethylsilylation of alcohols and phenols were carried out under solvent-free conditions with hexamethyldisilazane (HMDS) using LaCoO3 perovskite. LaCoO3 as an efficient catalyst accelerated this reaction under milder...
Study of bendamustine anticancer drug in gaseous and in a few selected liquid solvents phases using functional density theory (DFT)
In this research, Bendamustine anticancer drug in main and excited states in gaseous phase and in water, ethanol and methanol solvent phases have studied, using DFT and at MPW1PW91/6-311++G(d, p) theoretical level. The m...