MnO2/3MgO Nanocomposite for Preconcentration and Determination of Trace Copper and Lead in Food and Water by Flame Atomic Absorption Spectrometry

Khayatian, Gholamreza; Moradi, Marzieh; Hassanpoor, Shahed

doi:10.1134/s1061934818050088

Cited by 21 publications

(5 citation statements)

References 37 publications

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“…As a result, the reported new SiO 2 -APH-SPE method is potentially applicable to the analysis of trace Cu, Zn and Pb metals with FAAS in natural water samples. Food and water [43] Cu, Zn, Pb Water [44] Cu Iminodiacetic acid-containing polymer Water [45] Pb Octadecyl silica membrane disks modified with Schiff's base…”

Section: Discussionmentioning

confidence: 99%

Silica Gel‐Immobilized 5‐aminoisophthalohydrazide: A novel sorbent for solid phase extraction of Cu, Zn and Pb from natural water samples

Aydın

Çakmak

Levent

et al. 2020

Applied Organom Chemis

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A novel silica sorbent, silica gel‐immobilized 5‐aminoisophthalohydrazide (SiO2‐APH), was prepared by the condensation of 3‐chloropropyl‐functionalized silica gel with 5‐aminoisophthalohydrazide (APH) derived from dimethyl 5‐aminoisophthalate as a starting material and used for separation and preconcentration of Cu, Zn, and Pb metals in water samples using Flame Atomic Absorption Spectrometry (FAAS). The characterization of the new sorbent was carried out by Elemental Analysis, Thermogravimetric Analysis (TGA) and Fourier Transform Infrared Spectroscopy (FTIR). Important analytical parameters including as pH, amount of sorbent, type and amount of eluting solvent, sample volume, vortex and ultrasonic bath time, matrix ions that effect the developed SiO2‐APH‐solid phase extraction (SPE) method were investigated and optimum parameters were detected. Recoveries of examined metals were obtained as 98% for Cu and Pb and 101% for Zn. The relative standard deviation (RSD, n = 8) of Cu, Zn and Pb metals were 3.2, 2.8 and 1.6%, respectively. Limit of detections (LODs) (n = 10) were found as 2.7 μg L−1 for Cu, 7.4 μg L−1 for Zn and 3.5 μg L−1 for Pb μg L−1. The accuracy of the new method was assessed by analyzing of TMDA‐51.4 and TMDA‐70.2 certified reference materials. The results obtained for metals were in a good agreement with certified values. Addition/recovery test was applied to the real well, river, dam and stream water samples to check the accuracy of the method. The results showed that the developed SiO2‐APH‐SPE method can be effectively used as an alternative method for determination of Cu, Zn, and Pb metals in water samples.

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Section: Discussionmentioning

confidence: 99%

Silica Gel‐Immobilized 5‐aminoisophthalohydrazide: A novel sorbent for solid phase extraction of Cu, Zn and Pb from natural water samples

Aydın

Çakmak

Levent

et al. 2020

Applied Organom Chemis

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“…The pH of the leachate was measured by using a digital pH meter (Metrohm). Dissolved manganese was analyzed by using a flame atomic absorption spectrophotometer (Hitachi, Z-2000) [21]. The organic acid components were investigated using high-performance liquid chromatography (HPLC, Knauer) equipped with a Zorbax C18 column (250 mm × 4.6 mm) and a detector with diode array at 210 nm.…”

Section: Instrumentationmentioning

confidence: 99%

Bioleaching Ability of Fungi Isolated from an Indonesian Sulfurous River Sediment

et al. 2020

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The unique characteristics of sulfurous river sediment located in Ungaran, Indonesia, are a reservoir of novel fungi with manganese bioleaching properties. Fungi are known to produce metabolic organic acids that have a potential for the industrial application of leaching metal from the ores. This application has high advantages, including low cost, low energy, and creates minimal environmental damage. Therefore, this research was performed to analyze the manganese bioleaching activities of two fungal isolates (KA2B2 and KB4B) from Indonesian sulfurous river sediment on pyrolusite and determine their phenotypic characters. These activities were investigated in terms of changes in fungal biomass, soluble manganese concentration, pH reduction, and organic acid production during 16 days of leaching. Soluble manganese concentrations were measured by atomic absorption spectrometry (AAS), whereas organic acid concentrations were analyzed by high-performance liquid chromatography (HPLC). According to bioleaching investigations, KA2B2 strain was more efficient than KB4B1 strain in extracting manganese from 0.02 g/cm3 pyrolusite. It also produced higher levels of organic acids, such as oxalic acid and citric acid, than KB4B1 strain, proving that strain of KA2B2 could be used to extract manganese from pyrolusite. Based on the phenotypic characters, both strains were identified as genus Penicillium.

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“…The device working parameters (air, acetylene, optics, and electronics) were adjusted for maximum absorption for each element. Under the optimum established parameters, standard calibration curves for metals were constructed by plotting absorbency against dissolved manganese concentration [19].…”

Section: Bioleaching Experimentsmentioning

confidence: 99%

Pyrolusite Bioleaching by an Indigenous <i>Acidithiobacillus</i> sp KL3 Isolated from an Indonesian Sulfurous River Sediment

Retnaningrum¹,

Wilopo²

2019

Indones. J. Chem.

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The manganese bioleaching process of pyrolusite from Kliripan, Indonesia using Acidithiobacillus sp KL3 was investigated. The influence pulp densities of pyrolusite (0.01, 0.02, 0.03 and 0.05 g/cm3) on the bioleaching processes were studied for 16 days. The reduction on pH values, the increasing of oxidation-reduction potential (ORP), sulfate and manganese concentration were analyzed. The manganese bioleaching mechanism of pyrolusite by the strain was monitored using Scanning Electron Microscope-Energy Dispersive-X-ray Spectroscopy (SEM-EDX). The results indicated that 0.02 g/cm3 of pyrolusite was considered to be the optimal pulp density for manganese bioleaching process. During this process, pH values decreased, furthermore resulted in increasing of ORP, the concentration of sulfate and manganese. SEM-EDX analysis clearly showed the evidence of directly bacterial cell attachment into the surface of pyrolusite. Extracellular polymeric substances (EPSs) were further founded on that surface. Sulfur elemental was oxidized by the strain which was then confirmed of resulting in solubilized manganese.

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MnO2/3MgO Nanocomposite for Preconcentration and Determination of Trace Copper and Lead in Food and Water by Flame Atomic Absorption Spectrometry

Cited by 21 publications

References 37 publications

Silica Gel‐Immobilized 5‐aminoisophthalohydrazide: A novel sorbent for solid phase extraction of Cu, Zn and Pb from natural water samples

Silica Gel‐Immobilized 5‐aminoisophthalohydrazide: A novel sorbent for solid phase extraction of Cu, Zn and Pb from natural water samples

Bioleaching Ability of Fungi Isolated from an Indonesian Sulfurous River Sediment

Pyrolusite Bioleaching by an Indigenous <i>Acidithiobacillus</i> sp KL3 Isolated from an Indonesian Sulfurous River Sediment

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