Optimization for the Simultaneous Determination of Zinc in Environmental Samples With Calcon by Adsorptive Stripping Voltammetry : Response Surface Methodology

Suyani, Hamzar; Rahmi, Izzati; Pardi, Hilfi

doi:10.13005/ojc/330455

Cited by 5 publications

(2 citation statements)

References 13 publications

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“…Therefore, we need an alternative method that can overcome the limitations of the method. One of them is the differential pulse adsorptive stripping voltammetry (DPAdSV) method [31][32][33][34][35][36][37][38][39][40][41][42][43][44][45].…”

Section: Introductionmentioning

confidence: 99%

Optimization of Pb Adsorption from Seawater from Former Bauxite Mines Using Crab Shell Waste

Pardi

Fitriyah

Silitonga

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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Crab shell waste can cause pollution to the surrounding environment, but has the potential to be used as a biosorbent in the absorption of heavy metals, especially Pb because crab shells contain CaCO3 and chitin. Methods: Several variables that play a role in the biosorption process, among others: initial metal concentration, biosorbent mass, and contact time. Pb metal was determined by the Atomic Absorption Spectroscopy (AAS) method. Results: The results showed that the crab shell biosorbent contained Pb 0.019 mg/g. The concentration of Pb in the shell was used as a correction factor. Optimal result for parameter of initial concentration of Pb is 100 mg/L with efficiency percentage (99.11 ± 0.02)% and adsorption capacity (620.15 ± 0.3) ug/g. The optimal result of contact time is 120 minutes with efficiency percentage (91.22 ± 0.13)%. The optimal yield of biosorbent mass based on the percentage efficiency (98.01 ± 0.2)% is 2 grams. Conclusion: This study can show that crab shell waste can be used as an effective biosorbent for Pb metal adsorption. The results of the optimization of the best factors to be used in the biosorption process of Pb metal were the initial concentration of 100 mg/L, the mass of the biosorbent was 3 grams and the contact time was 110 minutes. The optimum conditions for Pb adsorption were successfully applied to seawater from the former bauxite mine.

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Section: Introductionmentioning

confidence: 99%

Optimization of Pb Adsorption from Seawater from Former Bauxite Mines Using Crab Shell Waste

Pardi

Fitriyah

Silitonga

et al. 2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…This method allows mixtures of ions to be measured individually in one step 7 . Stripping 8 and cyclic voltammetry 9 were chosen because it has high sensitivity 10 , low detection limit on the ppb scale 11 , easy use, and easy sample preparation 12 .…”

Section: Introductionmentioning

confidence: 99%

Microdetection of Chromium Mixed–Valences using CuNi/Ti Electrode and Linear Sweep Voltammetry

Syarif

2022

Mediterr.J.Chem.,

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An electrode of non-precious metal has the potency to be utilized as a working electrode for voltammetry measurements of Cr3+ and Cr6+. The analytical performance of the electrode in determining specific metal species qualitatively and quantitatively was studied. The detection data were recorded and analyzed using cyclic voltammetry (CV) and linear sweep voltammetry (LSV), whereas scanning electron microscope (SEM) and X-ray diffraction (XRD) spectroscopy were used to determine the surface morphology and the presence of crystalline in the electrode. Electroanalytical performance was determined by linear sweep voltammetry. The results show that the reduction of Cr6+ to Cr3+ appeared at +0.84 V (vs Ag/AgCl) and the reduction of Cr3+ to Cr2+ at +0.74 V (vs Ag/Ag). The optimum conditions for measuring Cr3+ were found at pH 6, deposition time of 30 seconds, and a scan rate of 160 mVs-1. The optimum pH for measuring Cr6+ is 4, deposition time of 60 seconds, and a scan rate of 140 mVs-1. The regression curve for the Cr3+ is linear in concentration 1 – 10 gL-1 with a correlation coefficient of 0.9883 and a detection limit of 2.08 gL-1. While the Cr6+ is linear in the range of 1 – 10 gL-1 with a correlation coefficient of 0.99 and a detection limit of 2.18 gL-1. There is a slight difference in the individual measurement current and the mixture of Cr3+ and Cr6+ but with a good agreement for the oxidation-reduction potential. The measurement data analysis shows the feasibility of the electrode and the measurement system developed.

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Voltammetric Study for Determination of Non-essential Metal Cd(II) in water samples (River and Sea) using Eriochrome Blue Black R as Complexing

et al. 2021

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The research on the determination of Cd(II) metal in river and seawater samples using the Adsortive Cathodic Stripping Voltammetry (AdCSV) method has been done. In order to increase the sensitivity and selectivity of Cd(II) measurement, it is necessary to determine the optimum condition for the variation of potential ligand accumulation, accumulation time, pH and optimum ligand concentration. It is also determined the accuracy and precision of the method used by determining the value of the relative standard deviation (SDR), as well as the recovery value. The result obtained is chalcone as the optimum ligand, the optimum accumulation potential is -0.1 V, the optimum accumulation time is 60 seconds, the optimum solution pH is 6, and the optimum chalcone concentration is 0.5 mM. The relative standard deviation value is 4.27%, the recovery value is 98.31%. The application of the VSAd method to water sample results the concentration of Cu(II) metal in the sample of Bangek river, Indonesia is 4.778 g/L and seawater in Teluk Kabung, Indonesia is 5.189 g/L.

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Optimization for the Simultaneous Determination of Zinc in Environmental Samples With Calcon by Adsorptive Stripping Voltammetry : Response Surface Methodology

Cited by 5 publications

References 13 publications

Optimization of Pb Adsorption from Seawater from Former Bauxite Mines Using Crab Shell Waste

Optimization of Pb Adsorption from Seawater from Former Bauxite Mines Using Crab Shell Waste

Microdetection of Chromium Mixed–Valences using CuNi/Ti Electrode and Linear Sweep Voltammetry

Voltammetric Study for Determination of Non-essential Metal Cd(II) in water samples (River and Sea) using Eriochrome Blue Black R as Complexing

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