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flotation spectrophotometric determination

Flotation-spectrophotometric determination of mercury

DOI: 10.2116/analsci.20.1449 Abstract This paper describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of trace amounts of

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Floatation-spectrophotometric Determination of Thorium,

Jan 24, 2011  A novel and sensitive floatation-spectrophotometric method is presented for determination of trace amounts of thorium in water samples. The method is based on the

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Flotation-Spectrophotometric Determination of

Dec 23, 1988  The molar absorptivity is 2.1×10 5 l mol -1 cm -1 at 555 nm and the detection limit Is 3 ng/ml. Beer’s law is obeyed up to a vanadium concentration of 0.3 μg/ml. The composition

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[Flotation spectrophotometric determination of platinum

The flotation spectrophotometric method for the determination of platinum with isochromatic dye ion-pair is described. Rhodamine 6G (R6G) was produced and entered into aqueous

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Flotation-spectrophotometric determination of trace of

Jun 01, 1997  A flotation spectrophotometric method for the determination of germanium with isochromatic dye ion-pairs is described. The molar ratio of germanium to

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[PDF] Flotation-Spectrophotometric Determination of Ag(I) at the

The method is based on the flotation of Ag(I)-iodide complex as an ion-associate with ferroin in pH of 4 from a large volume of an aqueous solution (500 mL) using n-heptane. The floated

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Flotation Spectrophotometric Determination of Aluminium with

Feb 27, 2008  Aluminium was determined in a weakly alkaline medium by reaction with alizarin at trace level. Flotation of the complex was carried out with heptane, followed by dissolution in

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Flotation-Spectrophotometric Determination of Trace

Feb 19, 1995  A flotation-spectrophotometric method for the separation and determination of Fe (III) in fresh and natural water samples has been developed. The method is based on the

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Flotation-spectrophotometric determination of osmium

Dec 01, 1981  A sensitive flotation-spectrophotometric method for the determination of osmium, based on the ion associate formed by the anionic thiocyanate osmium c

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Floatation-Spectrophotometric Determination of

A novel and sensitive floatation-spectrophotometric method is presented for determination of trace amounts of thorium in water samples. The method is based on the ion-associated

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[Flotation spectrophotometric determination of platinum on

The flotation spectrophotometric method for the determination of platinum with isochromatic dye ion-pair is described. Rhodamine 6G (R6G) was produced and entered into aqueous phase when pH = 5.5 buffer solution was added to the Pt (SnCl3)5 (R6G)3 by isopropyl ether flotation. And then R6G. TBF was

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Flotation-spectrophotometric determination of palladium with ...

A sensitive and precise method for the determination of microgram amounts of palladium, based on the ion associate of the anionic palladium(II)-thiocyanate complex with Methylene Blue (MB), has been developed. ... Flotation-spectrophotometric determination of palladium with thiocyanate and Methylene Blue Z. Marczenko and M. Jarosz, Analyst ...

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Flotation-spectrophotometric determination of trace of

Jun 01, 1997  A flotation spectrophotometric method for the determination of germanium with isochromatic dye ion-pairs is described. The molar ratio of germanium to

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Flotation-spectrophotometric determination of osmium

Dec 01, 1981  A sensitive flotation-spectrophotometric method for the determination of osmium, based on the ion associate formed by the anionic thiocyanate osmium c

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Sensitive flotation-spectrophotometric determination of gold,

The gold(I)-iodide-Methylene Blue (MB) system is suitable for flotation separation and spectrophotometric determination of gold. Under the optimum conditions [(MB(+))(AuI(2)(-))].3[(MB(+))(I(3)(-))] is formed, and floated with cyclohexane. The product is dissolved in methanol and its absorbance meas

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Flotation-Spectrophotometric Method for Separation and Determination

Dec 31, 2012  Summary: A flotation-spectrophotometric method for the determination of Cu2+ has been developed. The flotation process is based on the formation of a ternary ion-associate between Cu2+, methylthymol blue (MTB) and cetyltrimethylammonium bromide (CTAB) which is floated at the interface of aqueous phase and n-hexane by shaking in a separating

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[PDF] Flotation-Spectrophotometric Determination of Ag(I) at

The method is based on the flotation of Ag(I)-iodide complex as an ion-associate with ferroin in pH of 4 from a large volume of an aqueous solution (500 mL) using n-heptane. The floated layer was then dissolved in dimethylsulfoxide (DMSO) for the subsequent spectrophotometric determination. Beer's law was obeyed over a range of 2.0 × 10 - 7 -4 ...

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Flotation and Atomic Absorption Spectrophotometric Determination

Apr 11, 1990  The technique was successfully extended to float silver ions from a synthetic mixture. In the determination of silver by atomic absorption spectrophotometry, Bu-A was used to eliminate the interference effects of some organic compounds by adding it to both the sample and the standard solutions. The mechanism of this elimination is discussed.

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Flotation Spectrophotometric Determination of Aluminium with

Feb 27, 2008  Aluminium was determined in a weakly alkaline medium by reaction with alizarin at trace level. Flotation of the complex was carried out with heptane, followed by dissolution in N, N-dimethylformamide (DMF) for subsequent spectrophotometric determination. The molar absorptivity was 2.92×10 5 mol − cm − at 518 run. Beer's law was obeyed in ...

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(PDF) Flotation and enhanced Spectrophotometric Determination

Flotation and enhanced Spectrophotometric Determination of uranium (VI) in environmental samples

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Flotation-spectrophotometric determination of vanadium with

A new method of flotation separation and preconcentration of vanadium traces is described. The ion-associate formed by the anionic vanadium(V)-3, 5-dinitrocatechol complex and Rhodamine B is floated with cyclohexane. The separated and washed compound readily dissolves in acetone, giving an intensely coloured solution which forms the basis for a sensitive

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Flotation-spectrophotometric determination of mercury in

Nov 05, 2004  This paper describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of trace amounts of mercury. The method is based on the flotation of an ion-associate of HgI4(2-) and ferroin between aqueous and n-heptane interface at pH 5.

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Flotation and spectrophotometric determination of silver with

A sensitive flotation-spectrophotometric method, based on the complex formed between Ag(I) and 4-(p-nitrophenylazo)-2-amino-3-pyridinol is described. The complex precipitates when the aqueous solution is shaken with benzene, and the solid formed is then dissolved in dimethylformamide.

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Flotation-spectrophotometric determination of mercury in

This paper describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of trace amounts of mercury. The method is based on the flotation of an ion-associate of HgI4(2-) and ferroin between aqueous and n-heptane interface at pH 5. The ion-associate was then separated and dissolved in acetonitrile to measure its

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Flotation-spectrophotometric determination of praseodymium with

Aug 02, 1993  Flotation-spectrophotometric methods [4-6] for the determination of platinum metals and gold based on sparingly soluble ion associates of anionic complexes of these metals with basic dyes provide molar absorptiv ties (e) of 2 x 105-1 x 106 1 mol-t cm-t. Flotation-spectrophotometric methods have not been reported for rare earth elements.

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Flotation-spectrophotometric determination of palladium with ...

Flotation-spectrophotometric determination of palladium with thiocyanate and Methylene Blue . Z. Marczenko and M. Jarosz Abstract. A sensitive and precise method for the determination of microgram amounts of palladium, based on the ion associate of the anionic palladium(II)-thiocyanate complex with Methylene Blue (MB), has been developed. ...

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Flotation-spectrophotometric determination of trace of

Jun 01, 1997  A flotation spectrophotometric method for the determination of germanium with isochromatic dye ion-pairs is described. The molar ratio of germanium to

get price

Sensitive flotation-spectrophotometric determination of gold,

The gold(I)-iodide-Methylene Blue (MB) system is suitable for flotation separation and spectrophotometric determination of gold. Under the optimum conditions [(MB(+))(AuI(2)(-))].3[(MB(+))(I(3)(-))] is formed, and floated with cyclohexane. The product is dissolved in methanol and its absorbance meas

get price

[PDF] Flotation-Spectrophotometric Determination of Ag(I) at

The method is based on the flotation of Ag(I)-iodide complex as an ion-associate with ferroin in pH of 4 from a large volume of an aqueous solution (500 mL) using n-heptane. The floated layer was then dissolved in dimethylsulfoxide (DMSO) for the subsequent spectrophotometric determination. Beer's law was obeyed over a range of 2.0 × 10 - 7 -4 ...

get price

Flotation and Atomic Absorption Spectrophotometric Determination

Apr 11, 1990  The technique was successfully extended to float silver ions from a synthetic mixture. In the determination of silver by atomic absorption spectrophotometry, Bu-A was used to eliminate the interference effects of some organic compounds by adding it to both the sample and the standard solutions. The mechanism of this elimination is discussed.

get price

Flotation Spectrophotometric Determination of Aluminium with

Feb 27, 2008  Aluminium was determined in a weakly alkaline medium by reaction with alizarin at trace level. Flotation of the complex was carried out with heptane, followed by dissolution in N, N-dimethylformamide (DMF) for subsequent spectrophotometric determination. The molar absorptivity was 2.92×10 5 mol − cm − at 518 run. Beer's law was obeyed in ...

get price

(PDF) Flotation and enhanced Spectrophotometric Determination

Flotation and enhanced Spectrophotometric Determination of uranium (VI) in environmental samples

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Flotation-spectrophotometric determination of vanadium with

A new method of flotation separation and preconcentration of vanadium traces is described. The ion-associate formed by the anionic vanadium(V)-3, 5-dinitrocatechol complex and Rhodamine B is floated with cyclohexane. The separated and washed compound readily dissolves in acetone, giving an intensely coloured solution which forms the basis for a sensitive

get price

Flotation–Spectrophotometric Determination of Mercury in

Oct 03, 2004  This paper describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of trace amounts of mercury. The method is based on the flotation of an ion-associate of HgI42– and ferroin between aqueous and n-heptane interface at pH 5. The ion-associate was then separated and dissolved in

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Flotation-spectrophotometric determination of mercury in

Nov 05, 2004  This paper describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of trace amounts of mercury. The method is based on the flotation of an ion-associate of HgI4(2-) and ferroin between aqueous and n-heptane interface at pH 5.

get price

Flotation and spectrophotometric determination of silver with

A sensitive flotation-spectrophotometric method, based on the complex formed between Ag(I) and 4-(p-nitrophenylazo)-2-amino-3-pyridinol is described. The complex precipitates when the aqueous solution is shaken with benzene, and the solid formed is then dissolved in dimethylformamide.

get price

Flotation-spectrophotometric determination of mercury in

This paper describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of trace amounts of mercury. The method is based on the flotation of an ion-associate of HgI4(2-) and ferroin between aqueous and n-heptane interface at pH 5. The ion-associate was then separated and dissolved in acetonitrile to measure its

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PRIME PubMed Selective flotation-spectrophotometric determination

Khalifa, M E., et al. "Selective Flotation-spectrophotometric Determination of Trace copper(II) in Natural Waters, Human Blood and Drug Samples Using Phenanthraquinone Monophenylthiosemicarbazone." Chemical Pharmaceutical Bulletin, vol. 49,

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