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cloud point extraction of copper

The cloud point extraction of copper(II) with ...

2003-3-10  Thus the cloud point extraction of copper with 1-(2-thiazolylazo)-2-naphtol into the NS Triton X-114 phases is shown . The using of 0.05% Triton X-114 solution for the extraction of copper allows to decrease the limit of metal determination to 0.27 ng ml −1 by the AAS.

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Cloud point extraction for the determination of copper in ...

The final residue was treated with 0.5 mL concentrated hydrochloric acid and 1- 2 mL 70% The cloud point extraction of copper ion was performed in perchloric acid and evaporated to fumes, so that all the copper metal solutions of pH ranging from 3 to 8. Extraction recovery depends changes to copper ions.

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CLOUD POINT EXTRACTION FOR THE DETERMINATION

2020-1-13  A simple cloud point extraction procedure is presented for the preconcentration of copper in various samples. After complexation by 4-hydroxy-2-mercapto-6-propylpyrimidine (PTU), copper ions are quantitatively extracted into the phase rich in Triton X-114 after

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Cloud point extraction and separation of copper and ...

2010-4-10  A method is presented for the cloud-point extraction and separation of copper and lanthanoid ions. A water-soluble calixarene, p-sulfonatocalix[4]arene (C4AS), is used as the chelating agent and Triton X-100 is chosen as the surfactant.The factors affecting the extraction efficiency, such as pH, the concentrations of Triton X-100 and C4AS, equilibration time and centrifugation time, were ...

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Cloud point extraction for the determination of copper in ...

A simple cloud point extraction procedure is presented for the preconcentration of copper in various samples. After complexation by 4-hydroxy-2-mercapto-6-propylpyrimidine (PTU), copper ions are ...

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Cloud Point Extraction of Copper, Lead, Cadmium, and Iron ...

2019-11-27  A cloud point extraction procedure was optimized for the separation and preconcentration of lead(II), cadmium(II), copper(II), and iron(III) ions in various water and canned food samples. The metal ions formed complexes with 2,6-diamino-4-phenyl- 1,3,5-triazine that were extracted by surfactant-rich phases in the nonionic surfactant Triton X-114.

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Cloud Point Extraction of Copper, Zinc, Iron and Nickel in ...

2018-6-6  Cloud point methodology was successfully employed for preconcentration of trace copper, zinc, iron, and nickel prior to their determination by flame atomic absorption spectrometry (FAAS). The metals react with 2-phenyl-1H-benzo[d] imidazole (PHBI) in a surfactant Triton X-114 medium.

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Cloud point extraction of copper, lead, cadmium, and iron ...

2012-1-1  A cloud point extraction procedure was optimized for the separation and preconcentration of lead(II), cadmium(II), copper(II), and iron(III) ions in various water and canned food samples. The metal ions formed complexes with 2,6-diamino-4-phenyl-1,3,5-triazine that were extracted by surfactant-rich phases in the nonionic surfactant Triton X-114.

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A centrifuge-less cloud point extraction ...

Cloud point extraction for the separation, preconcentration and spectrophotometric determination of trace copper (II) in herbal plants samples using new synthesized reagent J. Global Pharma Technol. , 11 ( 7 ) ( 2019 ) , pp. 817 - 826

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(PDF) Cloud Point Extraction as a Procedure of Separation ...

Cloud point extraction is a separation and preconcentration procedure that has been extensively applied for trace metal determination in several different matrices.

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Cloud point extraction for the determination of copper ...

A cloud point extraction procedure was presented for the preconcentration of copper, nickel and cobalt ions in various samples. After complexation with methyl-2-pyridylketone oxime (MPKO) in basic medium, analyte ions are quantitatively extracted to the phase rich in Triton X-114 following centrifugation. 1.0 mol L(-1) HNO(3) nitric acid in methanol was added to the surfactant-rich phase prior ...

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Cloud Point Extraction of Trace Amounts of Copper and

86 N. Baghban et al., Cloud Point Extraction of Trace Amounts of Copper Croat. Chem. Acta 85 (2012) 85. OES),24 laser induced-thermal lens spectrometry (LI- TLS),25 and spectrophotometry.26 2-[(2 ...

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Cloud point extraction for the determination of copper ...

2008-2-11  A cloud point extraction procedure was presented for the preconcentration of copper, nickel and cobalt ions in various samples. After complexation with methyl-2-pyridylketone oxime (MPKO) in basic medium, analyte ions are quantitatively extracted to the phase rich in Triton X-114 following centrifugation. 1.0 mol L(-1) HNO(3) nitric acid in ...

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CLOUD POINT EXTRACTION FOR THE DETERMINATION

2020-1-13  A simple cloud point extraction procedure is presented for the preconcentration of copper in various samples. After complexation by 4-hydroxy-2-mercapto-6-propylpyrimidine (PTU), copper ions are quantitatively extracted into the phase rich in Triton X-114 after

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Sensitive Determination Of Copper By Cloud Point ...

2013-8-28  Key words: Cloud point extraction, Flame atomic absorption spectrometry, Copper. Introduction Everyone is exposed to trace amounts of copper through air, soil, household dust, food, drinking water and various consumers. Inorganic copper arising from a number of industrial and mining sources occurs in water in the +2 oxidation state1.

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Cloud Point Extraction of Copper, Lead, Cadmium, and Iron ...

2019-11-27  A cloud point extraction procedure was optimized for the separation and preconcentration of lead(II), cadmium(II), copper(II), and iron(III) ions in various water and canned food samples. The metal ions formed complexes with 2,6-diamino-4-phenyl- 1,3,5-triazine that were extracted by surfactant-rich phases in the nonionic surfactant Triton X-114.

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Application of Cloud Point Extraction for Copper, Nickel ...

A cloud point extraction procedure was presented for the preconcentration of copper, nickel, zinc and iron ions in various samples. After complexation by 2‐(6‐(1H‐benzo[d]imidazol‐2‐yl)pyridin‐2‐yl)‐1H‐benzo[d]Imidazole (BIYPYBI), analyte ions are quantitatively extracted in Triton X‐114 following centrifugation. 1.0 mol L −1 HNO 3 nitric acid in

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Cloud point extraction for the determination of copper in ...

The cloud point extraction of copper ion was performed in solutions of pH ranging from 3 to 8. Extraction recovery depends on the pH at which complex formation occurs. The effects of pH on the extraction of copper complex are given in Figure 3. In the pH range 5.5–6.0, extraction was quantitative.

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Cloud point extraction of copper, lead, cadmium, and iron ...

Cloud point extraction of copper, lead, cadmium, and iron using 2,6-diamino-4-phenyl-1,3,5-triazine and nonionic surfactant, and their flame atomic absorption spectrometric determination in water and canned food samples. by Demirhan Citak, Mustafa Tuzen. Journal of AOAC International. Read more related scholarly scientific articles and abstracts.

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Determination of Copper in Human Urine by Cloud Point ...

2016-1-21  Determination of Copper in Human Urine by Cloud Point Extraction and Flame Atomic Absorption Spectrometry Simona Procházková Faculty of Natural Sciences, Department of Analytical Chemistry, Comenius University in Bratislava, Bratislava, Slovakia Radoslav Halko Faculty of Natural Sciences, Department of Analytical Chemistry, Comenius ...

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Cloud point extraction for the determination of copper ...

2008-2-11  A cloud point extraction procedure was presented for the preconcentration of copper, nickel and cobalt ions in various samples. After complexation with methyl-2-pyridylketone oxime (MPKO) in basic medium, analyte ions are quantitatively extracted to the phase rich in Triton X-114 following centrifugation. 1.0 mol L(-1) HNO(3) nitric acid in ...

More

CLOUD POINT EXTRACTION FOR THE DETERMINATION

2020-1-13  A simple cloud point extraction procedure is presented for the preconcentration of copper in various samples. After complexation by 4-hydroxy-2-mercapto-6-propylpyrimidine (PTU), copper ions are quantitatively extracted into the phase rich in Triton X-114 after

More

Sensitive Determination Of Copper By Cloud Point ...

2013-8-28  Key words: Cloud point extraction, Flame atomic absorption spectrometry, Copper. Introduction Everyone is exposed to trace amounts of copper through air, soil, household dust, food, drinking water and various consumers. Inorganic copper arising from a number of industrial and mining sources occurs in water in the +2 oxidation state1.

More

Cloud point extraction for the determination of copper in ...

The cloud point extraction of copper ion was performed in solutions of pH ranging from 3 to 8. Extraction recovery depends on the pH at which complex formation occurs. The effects of pH on the extraction of copper complex are given in Figure 3. In the pH range 5.5–6.0, extraction was quantitative.

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A cloud-point extraction-chromogenic system for

2018-7-6  Keywords: Cloud Point Extraction, Copper(II), Azo Dye, Spectrophotometry, TDDFT calculations, CPE INTRODUCTION Copper is a first row transition element from Group 11 with average content in the Earth’s crust of 50 ppm [1]. It is a soft, malleable, and ductile metal with high electrical and thermal conductivity.

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A new cloud point microextraction method for ...

2016-7-20  In cloud point extraction system, temperature of extraction is very important parameter for micelles occurring26. The effect of temperature was investigated in the range of 25-65°C. It was found that CPE sensitivity increased with increase in temperature from 25-45°C and reach maximum in the range of 45-55°C.

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Determination of Copper in Human Urine by Cloud Point ...

2016-1-21  Determination of Copper in Human Urine by Cloud Point Extraction and Flame Atomic Absorption Spectrometry Simona Procházková Faculty of Natural Sciences, Department of Analytical Chemistry, Comenius University in Bratislava, Bratislava, Slovakia Radoslav Halko Faculty of Natural Sciences, Department of Analytical Chemistry, Comenius ...

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Optimization of an analytical method for the ...

2015-7-24  On this basis, a cloud point extraction (CPE) was developed for copper determination by a UV-vis method. The BTF–Cu 2+ complex was explored for pre-concentration, and dissolved in a micellar phase composed by

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Determination of Zinc, Copper, and Mercury in Water ...

2018-12-14  Keywords: copper, mercury, zinc, micro cloud point extraction, UV-Vis spectrophotometry INTRODUCTION Trace determination of heavy metals is one of the most important issues of chemical analysis [1]. Over the years, UV-Vis spectrophotometry has been widely used for the determination of

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Colorimetric sensing of copper based on its suppressive ...

Silver nanoparticles exhibit the optical properties of surface plasmon resonance (SPR). This paper describes a method based on both SPR and cloud point extraction of silver nanoparticles (AgNPs) for the determination of copper. Label free AgNPs are enriched into

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