Pre-Concentration of Traces of Cadmium, Cobalt, Nickel and Lead in Natural Honeys by Solid Phase Extraction Followed by Their Determination Using Flame Atomic Absorption Spectrometry

Stecka, Helena; Jedryczko, Dominika; Pohl, Paweł; Wełna, Maja

doi:10.5935/0103-5053.20130301

Cited by 3 publications

(4 citation statements)

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“…The precision (RSD < 20%, n = 5) can be considered good. In Table 2 are shown the main characteristics of the proposed method and works found in the literature [27][28][29][30][31][32] that used cloud point extraction (CPE) and SPE extraction methods applied to similar samples. As can be observed, the LOD of the proposed method is similar those of the other works.…”

Section: Determination Of CD and Pb In Honeymentioning

confidence: 99%

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Dispersive liquid–liquid microextraction: An efficient approach for the extraction of Cd and Pb from honey and determination by flame atomic absorption spectrometry

Rosa

Duarte

Paniz

et al. 2015

Microchemical Journal

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Section: Determination Of CD and Pb In Honeymentioning

confidence: 99%

“…[10,[27][28][29] Therefore, the effect of the volume of extraction and dispersive solvents were evaluated on extraction of Cd and Pb. The volume of dispersive solvent was evaluated from 200 to 900 μL and from 300 to 1000 μL for Cd and Pb, respectively.…”

mentioning

confidence: 99%

Dispersive liquid–liquid microextraction: An efficient approach for the extraction of Cd and Pb from honey and determination by flame atomic absorption spectrometry

Rosa

Duarte

Paniz

et al. 2015

Microchemical Journal

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“…The each detection limit of Cd, Co, and Ni, and Pb was measured to 0.005, 0.015, 0.015, and 0.073 mg/g by flame atomic absorp-tion spectrometry. It was found that Cd, Co and Pb were under detection limits in nine honeys, while Ni was determined at the level of 0.19~0.93 mg/g [4] . The effect of polyethylene glycols with molecular weights of 2000, 6000, 13000, and 20000 on the sensitivity of the thermal lens determination of cobalt(III) using nitroso-R-salt and 2-nitroso-1-naphthol was studied.…”

Section: Introductionmentioning

confidence: 96%

Determination of Cobalt(III) Ion Using a Nafion-Ethylenediamine Modified Glassy Carbon Electrode

Kim¹,

Ko²

2014

Journal of the Chosun Natural Science

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Determination of cobalt(III) ion with a perfluorinated sulfonated polymer-ethylenediamine (nafion-en) modified glassy carbon electrode is studied. It is based on the chemical reactivity of an immobilized layer, nafion-en, to yield complex [Co(en) 3 ] 3+. The reduction peak potential by differential pulse voltammetry (DPV) is observed at-0.437±0.047 V (vs. Ag/ AgCl). The linear calibration curve is obtained in cobalt(III) ion concentration range 1.0×10-8~1 .0×10-3 M (5.893×10-125 .893×10-5 g/mL).

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“…It is widely used in production, recovery or removal of the toxic or precious heavy metals for different purposes [1][2][3] . The principle of the SX technique is based on the preferential distribution of dissolved target substance between two immiscible phases.…”

Section: Introductionmentioning

confidence: 99%

A Novel Viewpoint of Imidazolium Salts for Selective Extraction of Cobalt in the Presence of Nickel from Acidic Thiocyanate Solutions by Ionic-Liquid-Based Solvent-Extraction Technique

Eyüpoğlu

Polat

Kunduracıoğlu

et al. 2015

Journal of Dispersion Science and Technology

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In this study, the selective extraction and stripping conditions of Co(II) from acidic thiocyanate solution containing Co(II) and Ni(II) by ionic liquid based solvent extraction technique (ILBSX) using symetric and asymetric imidazolium bromide salts substituting butyl and isobutyl groups were experimentally optimized. The molecular structure effect of IMs have been determined as main factor to extract Co(II). The executive parameters on stripping and extraction processes such as IMs concentration, pH, thiocyanate concentration, stripping reagent type and concentration and etc. were experimentaly investigated. Molecular changes in the adduct consisting between IMs and Co-SCN, was illuminated by comparison of ATR-FTIR spectrums of pure and Co-SCN loaded IMs.Stochiometric rates of the adduct was verified with slope analysis. In the light of these examinations, Co(SCN) 3 -has been determined as prominent Co-SCN species in aqueous media. Symetric IMs were identified as more effective than asymetric ones on selective separation of Co(II) from Ni(II). Under optimum conditions, 99.20% of Co(II) was extracted and 93.33% of Co(II) was recovered with higher separation factors especially in diluted solution, whereas, Ni(II) extractions were negligible. We have concluded that the separation power of this study is high in Co(II)/Ni(II) containing dilute solutions and it can be used in preconcentration purposes effectively. Downloaded by [University of Connecticut] at 05

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Pre-Concentration of Traces of Cadmium, Cobalt, Nickel and Lead in Natural Honeys by Solid Phase Extraction Followed by Their Determination Using Flame Atomic Absorption Spectrometry

Cited by 3 publications

References 0 publications

Dispersive liquid–liquid microextraction: An efficient approach for the extraction of Cd and Pb from honey and determination by flame atomic absorption spectrometry

Dispersive liquid–liquid microextraction: An efficient approach for the extraction of Cd and Pb from honey and determination by flame atomic absorption spectrometry

Determination of Cobalt(III) Ion Using a Nafion-Ethylenediamine Modified Glassy Carbon Electrode

A Novel Viewpoint of Imidazolium Salts for Selective Extraction of Cobalt in the Presence of Nickel from Acidic Thiocyanate Solutions by Ionic-Liquid-Based Solvent-Extraction Technique

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