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cloud point e traction of copper

Study on the Cloud Point Extraction of Copper(II) from an

Removal of Copper(II) from a Concentrated Sulphate Medium by Cloud Point Extraction Using an N,N′-Bis(salicylaldehyde)Ethylenediimine Di-Schiff Base Chelating Ligand. Journal of Surfactants and Detergents 2014,17 (1),27-35.

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Cloud point extraction for the determination of copper

Feb 11, 2008· 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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The cloud point extraction of copper(II) with

Mar 10, 2003· The possibility to use monocarboxylic acids and their mixtures with amines for copper concentrating by the way of micellar extraction at cloud point t

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Cloud Point Extraction of Trace Amounts of Copper and Its

N. Baghban et al., Cloud Point Extraction of Trace Amounts of Copper 87 Croat. Chem. Acta 85 (2012) 85. Rice Flour Preparation One gram of rice flour was placed in a 100 mL beaker, 7 mL

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

Feb 15, 2007· 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

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Cloud point extraction for the determination of trace

Cloud point extraction for the determination of copper(II) is proposed after the formation of a complex with sulfapyridylazo resorcinol (SPAR) and later measurement by flame atomic absorption spectrometry (FAAS) using Triton X-100 as a surfactant. The surfactant-rich phase was diluted with nitric acid in methanol, prior to FAAS measurement.

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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 and flame atomic absorption

Jun 15, 2009· Cloud point extraction was used with lipophilic Schiff base N,N′-bis(2-hydroxyacetophenone)-1,2-propanediimine (L) as a pre-concentration step prior to flame atomic absorption spectrometry determination of trace amounts of copper in water samples.The process is based upon the formation of Cu(II)/L complexes soluble in a micellar phase composed by the non

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Use of cloud point extraction for removal of nanosized

Feb 23, 2010· Triton X-114 based cloud point extraction has been demonstrated to be an advantageous approach for the recovery of nanosized copper oxide (NCO) from water. The removal of NCO was influenced by the concentrations of TX-114 and salt, incubation temperature and time, as well as solution pH. With the addition of 0.3% (w/v) Triton X-114, over 88% of the spiked NCO was

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Cloud point extraction studies on recovery of nickel(II

Jul 27, 2015· The cloud point extraction process of copper(II) by salicylideneaniline dissolved in Triton X-100 non-ionic surfactant micellar solutions was investigated over a pH range of approximately 6–10. The concentrations of the ligand and Triton X-100 were between 1.7 × 10 −3 mol/L and 1.7 × 10 −2 mol/L, and 1 wt.% and 13 wt.% respectively. The

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Cloud point extraction for the determination of copper

Feb 11, 2008· 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 of trace

Cloud point extraction for the determination of copper(II) is proposed after the formation of a complex with sulfapyridylazo resorcinol (SPAR) and later measurement by flame atomic absorption spectrometry (FAAS) using Triton X-100 as a surfactant. The surfactant-rich phase was diluted with nitric acid in methanol, prior to FAAS measurement.

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CLOUD POINT EXTRACTION FOR THE DETERMINATION OF

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

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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{Room temperature cloud point extraction: An application

Abstract: The novel cloud point extraction procedure for preconcentration of copper(II) was discovered. A simple chemical method for initiating the cloud point extraction (CPE) has been proposed. The formation of surfactant rich phase in a system containing a nonionic surfactant Triton X-100, copper

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Optimization of cloud point extraction of copper with

Abstract. Taguchi method was applied to optimize cloud point extraction (CPE) conditions for preconcentration and determination of trace amounts of copper by UV-Vis spectrophotometry.Briefly, the copper ions formed complexes with neocuproine in aqueous solution; then, Triton X-114 (0.15%, w/v) was added and phase separation occurred upon heating to 60°C.

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Cloud-Point Extraction for On-Line Trace Determination of

A cloud point extraction-flow injection procedure is proposed for on-line determination of trace amounts of copper(II) by flame atomic absorption spectrometry. Copper(II) was extracted using the non-ionic surfactant, Triton X-114 after complex formation with N-phenyl benzohydroxamic acid at pH 5 in the presence of sodium sulfate as a salting-out agent at 25 °C.

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(PDF) Cloud point extraction using NDTT reagent for

The effect of equilibration temprature on cloud point extraction of copper Conditions: pH: 8.5, Cu +2 : 50 ng ml-1,TritonX114: 0.05%, NDTT: 3 × 10-6 mol l-1 Figures uploaded by Pourya Biparva

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Use of cloud point extraction for removal of nanosized

Triton X-114 based cloud point extraction has been demonstrated to be an advantageous approach for the recovery of nanosized copper oxide (NCO) from water. The removal of NCO was influenced by the concentrations of TX-114 and salt, incubation temperature and time, as well as solution pH. With the addition of 0.3% (w/v) Triton X-114, over 88% of the spiked NCO was removed from wastewater after

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Cloud point extraction and flame atomic absorption

Dec 30, 2008· A cloud point extraction procedure was presented for the preconcentration of copper(II) ion in various samples. After complexation by 4-(phenyl diazenyl) benzene-1,3-diamine (PDBDM) (chrysoidine), copper(II) ions were quantitatively recovered in Triton X-114 after centrifugation. 0.5ml of methanol acidified with 1.0molL(-1) HNO3 was added to

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

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 as a Procedure of Separation and

Cloud point extraction for the copper species was prepared at different buffered pH solutions. The separation of by copper ion cloud point extractioninvolves prior formation of a complex with sufficient hydrophobic and the Amoxicillin drug to be extracted into the small volume of the surfactant-rich phase.

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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 quantitatively extracted into the phase rich in Triton

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Development of a cloud point extraction

Jan 10, 2007· A simple and efficient cloud point extraction-spectrofluorimetric method for the determination of copper(II) in different samples has been proposed. The procedure is based on the oxidation of thiamine with copper(II) to form highly fluorescent thiochrome, its extraction to Triton X-114 micelles and spectrofluorimetric determination.

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