flotation spectrophotometric

Flotation–Spectrophotometric Method for Separation and

“flotationspectrophotometric” is based on the fact that some ion associations are not soluble in polar organic solvents, and when an aqueous phase is shaken with an organic solvent, a precipitate originates in the interface or on the extraction funnel walls Once both phases have been separated the precipitate is dissolved in an appropriate solvent, and the corresponding measurements are

Floatationspectrophotometric Determination of Thorium

Floatationspectrophotometric procedure A 1 mL portion of the standard solution containing the thorium at concentration level of 10 μg mL −1 was placed into a 100 mL volumetric flask To this solution 15 mL of 1 × 10 −4 mol L −1 Eriochrome cyanine R, 5 mL of buffer with pH = 4, 10 mL of 1M NaCl, 15 mL of 1 × 10 −4 mol L −1 Brij35 were added This mixture was diluted to the mark

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FlotationSpectrophotometric Method for the Determination

spectrophotometric method for (Al 3+XO)CTA + ternary ionassociate in to the interface between aqueous and n hexane phase by flotation method The effect of standing time,

FloatationSpectrophotometric Determination of Thorium

24/01/2011· A novel and sensitive floatationspectrophotometric method is presented for determination of trace amounts of thorium in water samples The method is based on the ionassociated formation between t

Cited by: 11

FlotationSpectrophotometric Method for the

A simple, fast, reproducible and sensitive method for the flotation spectrophotometric determination of Al 3+ is reported The apparent molar absorptivity (ε) of the ion associate was determined to be 835×10 4 L mol 1 cm 1 The calibration curve was linear in the concentration range of 1050 ng mL >1</sup> of Al<sup>3+</sup> with a correlation coefficient of 09997

Cited by: 2

Flotation Spectrophotometric Determination of Aluminium

Flotation of the complex was carried out with heptane, followed by dissolution in N, Ndimethylformamide (DMF) for subsequent spectrophotometric determination The

Cited by: 26

Flotation–Spectrophotometric Method for Separation and

“flotationspectrophotometric” is based on the fact that some ion associations are not soluble in polar organic solvents, and when an aqueous phase is shaken with an organic solvent, a precipitate originates in the interface or on the extraction funnel walls Once both phases have been separated the precipitate is dissolved in an appropriate solvent, and the corresponding measurements are

FlotationSpectrophotometric Method for the

A simple, fast, reproducible and sensitive method for the flotation spectrophotometric determination of Al 3+ is reported The apparent molar absorptivity (ε) of the ion associate was determined to be 835×10 4 L mol 1 cm 1 The calibration curve was linear in the concentration range of 1050 ng mL >1</sup> of Al<sup>3+</sup> with a correlation coefficient of 09997

Flotation Spectrophotometric Determination of

Flotation of the complex was carried out with heptane, followed by dissolution in N, Ndimethylformamide (DMF) for subsequent spectrophotometric determination The

Floatationspectrophotometric Determination of

Floatationspectrophotometric procedure A 1 mL portion of the standard solution containing the thorium at concentration level of 10 μg mL −1 was placed into a 100 mL volumetric flask To this solution 15 mL of 1 × 10 −4 mol L −1 Eriochrome cyanine R, 5 mL of buffer with pH = 4, 10 mL of 1M NaCl, 15 mL of 1 × 10 −4 mol L −1 Brij35 were added This mixture was diluted to the mark

Selective FlotationSpectrophotometric Procedure for the

An intense clear violet layer was formed, after flotation, by adding an oleic acid (HOL) surfactant The composition of the float is 1: 1 (Pd:HHB) A highly selective and sensitive spectrophotometric procedure was proposed for the determination of microamounts of Pd(II) as its floated complex The flotationdetermination method was achieved in the pH range 2570 Beer's law was obeyed up to

Flotation Spectrophotometric Determination of

The flotation of the ion association complex was carried out with hexane, followed by dissolution in acetone for subsequent spectrophotometric determination The molar absorptivity was 183 × 105

FlotationSpectrophotometric Method for the Determination

Keywords: Flotationspectrophotometric, Aluminium, Xylenol orange, Cetyltrimethylammonium bromide, Ion associate Introduction Aluminium has long been considered as virtually nontoxic and nonabsorbable from the gastrointestinal tract More recent studies on humans, however, expose its acute toxicity 1, including impaired memory, convulsions, characteristic EEG changes, uremia, shaver’s

Selective FlotationSpectrophotometric Determination of

Request PDF | Selective FlotationSpectrophotometric Determination of Trace Copper(II) in Natural Waters, Human Blood and Drug Samples Using Phenanthraquinone Monophenylthiosemicarbazone | Copper

Flotationspectrophotometric determination of traces

A simple, fast, reproducible and sensitive method for the flotationspectrophotometric determination of Pb2+ is reported The method is based on the ternary ionassociation of Pb2+, xylenol orange (XO) and cetyltrimethylammonium bromide (CTAB) which is floated at interface of aqueous phase and nhexane by shaking the separating funnel By discarding the aqueous solution (the more dense phase

Flotation spectrophotometric determination of

Flotation of the complex was carried out with heptane, followed by dissolution in N,Ndimethylformamide (DMF) for subsequent spectrophotometric determination The molar absorptivity was 292×10 5 mol1 cm1 at 518 nm Beer's law was obeyed in the range 580 µg/litre and the detection limit was 04 µg/litre The reliability of the procedure

FlotationSpectrophotometric Method for the

A simple, fast, reproducible and sensitive method for the flotation spectrophotometric determination of Al 3+ is reported The apparent molar absorptivity (ε) of the ion associate was determined to be 835×10 4 L mol 1 cm 1 The calibration curve was linear in the concentration range of 1050 ng mL >1</sup> of Al<sup>3+</sup> with a correlation coefficient of 09997

Flotationspectrophotometric method for the

This paper describes a sensitive spectrophotometric method for the determination of mercury, based on the flotation of a mercury iodidebrilliant green complex with cyclohexane at pH 5 and dissolution of the complex in acetone The absorbance of the complex is measured at 625 nm Beer's law is obeyed from 4–500 μg/l of mercury The method is highly sensitive (ɛ = 596 × 105 1 mol−1 cm

Flotation Spectrophotometric Determination of

Flotation of the complex was carried out with heptane, followed by dissolution in N, Ndimethylformamide (DMF) for subsequent spectrophotometric determination The

Flotationspectrophotometric determination of traces

A simple, fast, reproducible and sensitive method for the flotationspectrophotometric determination of Pb2+ is reported The method is based on the ternary ionassociation of Pb2+, xylenol orange (XO) and cetyltrimethylammonium bromide (CTAB) which is floated at interface of aqueous phase and nhexane by shaking the separating funnel By discarding the aqueous solution (the more dense phase

Flotation spectrophotometric determination of

Flotation of the complex was carried out with heptane, followed by dissolution in N,Ndimethylformamide (DMF) for subsequent spectrophotometric determination The molar absorptivity was 292×10 5 mol1 cm1 at 518 nm Beer's law was obeyed in the range 580 µg/litre and the detection limit was 04 µg/litre The reliability of the procedure

Flotation–Spectrophotometric Determination of Mercury in

Flotation–Spectrophotometric Determination of Mercury in Water Samples Using Iodide and Ferroin Mohammad Saeid HOSSEINI † and Hamid HASHEMIMOGHADDAM Department of Chemistry, Faculty of Science, Birjand University, Birjand, P O Box 79, Iran This paper describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of trace

Selective FlotationSpectrophotometric Determination of

spectrophotometric determination of copper,8,13—15)little work has been done using PPT16)and perhaps no trial has been made to float the analyte with this reagent The present investigation aims to develop a simple, rapid and selective procedure for the preconcentration and determination of CuII in natural waters, blood and drug samples using HOL as a surfactant and PPT as a chelating agent

Sensitive flotationspectrophotometric method for the

Flotationspectrophotometric methods have been described for the determination of noble metals, gold and rare earths [ 1 5] These techniques are highly sensitive and provide molar absorptivities (e) of 2 x 1 0 5 1 × 1 0 6 1 m o l e cm 1 Lobinski and Marczenko [6] described for the first time a flotationspectrophotometric method for the determination of vanadium using 3,5

New Article: Floatationspectrophotometric

New Article: Floatationspectrophotometric Determination of Thorium, Using complex Formation with Eriochrome Cyanine R A novel and sensitive floatationspectrophotometric method is presented for determination of trace amounts of thorium in water samples The method is based on the ionassociated formation between thorium, Eriochrome cyanine R and Brij35 at pH = 4 meAutoren: Sabah Shiri

(PDF) Development of a selective and sensitive flotation

Several methods have been phase extraction, etc can solve these problems and lead to developed for the flotation of heavy metal ions [22–27] a higher confidence level and easy determination of the trace Based on the spectrophotometric and potentiometric stud elements [7–17] Some of these methods suffer from inconve ies in nonaqueous and water sample, we revealed that phenyl niences