Magda Akl

Selective flotation-separation and spectrophotometric determination of cadmium using phenanthraquinone monophenythiosemicarbazone MA Akl, ME Khalifa, SE Ghazy, MM Hassanien Analytical sciences 18 (11), 1240 , 2002

Determination of Trace Amounts of Lead Using the Flotation ...

The present study describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of extremely low concentrations of lead. It is based on flotation of a complex of Pb 2+ ions and Alizarin yellow between aqueous and n -hexane interface at pH = 6.

Printed in Ethiopia DOI

application of ( pyridylazo)resorcinol for flotation- SPECTROPHOTOMETRIC DETERMINATION OF IRON Galya K. Toncheva 1 , Kiril B. Gavazov 1* , Zlatka G. Georgieva 1 , …

Selective Flotation-Spectrophotometric Procedure for …

A highly selective and sensitive spectrophotometric procedure was proposed for the determination of microamounts of Pd(II) as its floated complex. The flotation-determination method was …

Flotation-Spectrophotometric Determination of Vanadium ...

A new method of flotation separation and preconcentration of vanadium traces is described. The ion-associate formed by the anionic vanadium(V) , dinitrocatechol complex and Rhodamine B is floated with cyclohexane.

Spectrophotometric determination of xanthate and …

20 · A sensitive and robust analytical method for spectrophotometric determination of ethyl xanthate, CH(3)CH(2)OCS(2)(-) at trace concentrations in pulp solutions from froth flotation …

Development of a flotation-spectrophotometric method for ...

A new simple and sensitive flotation-spectrophotometric method for the determination of cetylpyridinium chloride (CPC) is reported. The method is based on the formation of an ion- associate between CPC and Orange II (OR) which is floated in the interface of aqueous phase and n-hexane by vigorous shaking.

www.journal.csj.jp

The extraction and preconcentration of a metal complex via surfactant-mediated phase separation was studied. A sensitive, selective and low-cost methodology for the determination

Hamid Hashemi-Moghaddam

Flotation-Spectrophotometric Determination of Ag (I) at the 7 mol L Level Using Iodide and Ferroin as an Ion-associate MS Hosseini, H Hashemi-Moghaddam Bulletin of the Korean Chemical Society 26 (10), 1532 , 2005

flotation spectrophotometric 2009

Determination of Trace Amounts of Lead Using the Flotation-spectrophotometric ... for the spectrophotometric determination of lead is ... 2009.06 .046..

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 formation between thorium, Eriochrome ...

Determination of Trace Amounts of Lead Using the …

3 · The present study describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of extremely low concentrations of lead. It is based on flotation of a complex of Pb2+ ions and Alizarin yellow between aqueous and n-hexane interface at pH = 6.

Selective Flotation-Separation and …

18 · A simple, selective and sensitive procedure is described for the preconcentration by flotation followed by spectrophotometric determination of trace amounts of Cd(II).

Flotation–Spectrophotometric Method for …

NAHID POURREZA et al., J.Chem.Soc.Pak.,Vol. 34, No. 6 2012 1352 Flotation–Spectrophotometric Method for Separation and Determination of Trace Amounts of Copper NAHID POURREZA*, HOOSHANG ...

Flotation and spectrophotometric determination of silver ...

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

Flotation and enhanced Spectrophotometric Determination of ...

A green and simple technique for the separation via flotation and spectrophotometric detection of U(VI) in water and real ore samples is presented in this research study in which the heterocyclic azo dye (2pyridyl azo) resorcinol (NaPAR) is used to preconcentrate the uranyl(VI) ions to form a reddish complex in the aqueous solution in the pH range 5.0. .0.

Flotation–Spectrophotometric Determination of Mercury in …

spectrophotometric determination of low level of mercury in aquatic samples by a simple flotation method in which the anionic mercury iodide complex is strongly associated with ferroin as a cationic dye reagent. Experimental ...

Separation via Flotation and Spectrometric Determination of …

Separation via Flotation and Spectrometric Determination of Copper(II) in Environmental Samples using a Newly Synthesized Girard T Derivative Magda A Akl*, ...

Determination of Trace Amounts of Lead Using the …

 · The present study describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of extremely low concentrations of lead. It is based on flotation of a complex of Pb2+ ions and Alizarin yellow between aqueous ...

mol L Level Using Iodide and Ferroin as an Ion-associate

Flotation-Spectrophotometric Determination of Ag(I) Bull. Korean Chem. Soc. 2005 , Vol. 26, No. 10 1529 Flotation-Spectrophotometric Det ermination of Ag(I) at the 10 −7 mol L −1 Level Using Iodide and Ferroin as an Ion-associate Mohammad Saeid Hosseini * and Hamid Hashemi-Moghaddam

Flotation—spectrophotometric determination of …

A sensitive flotation—spectrophotometric method, based on the ion associate formed by the anionic thiocyanate complex of osmium with the basic dye methylene blue () is described. The ion associate precipitates when the ...

Journal of the Iranian Chemical Society, JOURNAL OF THE ...

Eriochrome Cyanine R (ECR) with a flotation step prior to spectrophotometric determination was developed. The precipitate in the scum layer was quantitatively collected, stripped with 4 ml of 3% HCl and measured spectrophotometrically at 540 nm for

Flotation-spectrophotometric method for the …

 · Abstract This paper describes a sensitive spectrophotometric method for the determination of mercury, based on the flotation of a mercury iodide-brilliant green complex with cyclohexane at pH 5 and dissolution of the ...

Floatation-Spectrophotometric Determination of …

 · In the present research, a fast and sensitive flotation-spectrophotometric method was developed for quantitative determination of thorium, ...

A Selective Flotation-Spectrophotometric Method for …

7 · A Selective Flotation-Spectrophotometric Method for the Determination of Nickel using Dimethylglyoxime Article (PDF Available) in Journal of the Brazilian Chemical Society 22(6) · …

Flotation-spectrophotometric determination of …

 · 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 (), has been developed. The ion associate is floated with benzene and ...

UV spectrophotometric determination of 2 ...

UV spectrophotometric determination of Mercaptobenzothiazole (MBT) in flotation liquors. M.H. Jones & J.T. Woodcock. Pages 505 ... (MBT) is a constituent of certain flotation collectors, and there is a need for determination of MBT residuals in flotation plant liquors.

Extraction flotation/spectrophotometric determination …

Keiya KOTSUJI, Kazumi WAKIYA 1), Shigehiko HAYASHI 2) 1) Department of Chemistry, Fukui Medical School 2) Department of …

Study on Spectrophotometric Determination of Trace Copper ...

A new spectrophotometric method of determination of trace copper by flotation separation was established.The proposed method has been successfully applied to the determination of Cu 2+ in various environmental water samples with satisfactory results.

Flotation-Spectrophotometric Determination of Ag(I) …

A simple and cost effective method for separation and preconcentration of Ag(I) at the level in the environmental and mineral samples is present. 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 …