Home--->flotation spectrophotometric sensitive

  • Sensitive flotation—spectrophotometric determination of

    01-07-1979· Many highly sensitive, flotation spectrophotometric methods for determi- nation of various elements have been developed recently [4] . On shaking the aqueous solution with a slightly polar solvent the sparingly soluble ion associate precipitates at the phase boundary.

    Sensitive flotation-spectrophotometric determination of

    01-01-1983· Sensitive flotation-spectrophotometric methods are based on the ion-associates formed by the anionic chlorostannate(II) complex of platinum with the basic dyes rhodamine 6G, Victoria blue B, Victoria blue 4R and Capri blue.

    Sensitive flotation-spectrophotometric determination of

    Sensitive flotation-spectrophotometric determination of gold, based on the gold(I)-iodide-methylene blue system. Marczenko Z(1), Jankowski K. Author information: (1)Department of Analytical Chemistry, Technical University, Warsaw, Poland.

    Sensitive flotation-spectrophotometric determination of

    01-01-1989· A method of flotation separation with subsequent sensitive spectrophotometric determination of niobium is developed. In the presence of oxalate, niobium and 3,4-dinitrocatechol form an anionic complex able to associate with Rhodamine B (RB).

    Separation via flotation, spectrophotometric speciation

    The composition of the float was 1:1 [V(IV)]:[HMBPT]. A highly selective and sensitive spectrophotometric procedure was proposed for the determination of microamounts of V(IV) as its floated complex. The molar absorptivities of the V(IV)-HMBPT and V(IV)-HMBPT-HOL systems were 0.4 x 10(4) and 0.12 x 10(5) L mol(-1) cm(-1) at 560 nm, respectively.

    Sensitive flotation-spectrophotometric method for the

    01-03-1994· Flotation-spectrophotometric 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.

    Sensitive flotation-spectrophotometric determination of

    Sensitive flotation-spectrophotometric determination of gold, based on the gold(I)-iodide-methylene blue system. Marczenko Z(1), Jankowski K. Author information: (1)Department of Analytical Chemistry, Technical University, Warsaw, Poland.

    Sensitive flotation—spectrophotometric determination

    01-07-1979· Two sensitive, precise spectrophotometric methods for the determination of rhodium with malachite green are proposed. The anionic rhodium complex with tin(II) chloride yields an ion associate with malachite green; on shaking the solution (in 6.5 M HCl) with benzene, the sparingly soluble ion associate (rhodium: malachite green =1:2) precipitates at the phase boundary.

    Sensitive spectrophotometric determination of osmium

    Sensitive spectrophotometric determination of osmium with tin(II) chloride and rhodamine B after flotation using cyclohexane Analyst . 1988 Jan;113(1):129-32. doi: 10.1039/an9881300129.

    Flotation-spectrophotometric method for the

    15-02-2005· 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 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 = 5.96 × 105 1 mol−1 cm

    Sensitive flotation-spectrophotometric determination

    Sensitive flotation-spectrophotometric determination of osmium based on the osmium(IV)-chloride-rhodamine 6 G system. Empfindliche Osmium-Bestimmung durch Flotation und Spektrophotometrie auf der Grundlage des Osmium(TV)chlorid-Rhodamin-6G-Systems. Z. Marczenko 1, M. Balcerzak 1

    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 (MB), has been developed. The ion associate is floated with benzene and dissolved in acetone, and its molar absorptivity is

    Selective Flotation-Spectrophotometric Procedure for the

    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 flotation-determination method was achieved in the pH range 2.5 7.0. Beer’s law was obeyed up to 6×10-5 mol l-1 (6.3 ppm).

    Sensitive spectrophotometric determination of osmium

    Sensitive spectrophotometric determination of osmium with tin(II) chloride and Rhodamine B after flotation using cyclohexane

    Publication Sensitive flotation-spectrophotometric

    Sensitive flotation-spectrophotometric determination of ruthenium with tin(II) chloride and Rhodamine 6G Authors: Maria Balcerzak, W. Woźniak

    A selective flotation-spectrophotometric method for the

    ARTICLE . A selective flotation-spectrophotometric method for the determination of nickel using dimethylglyoxime . Hamid Hashemi-Moghaddam *. Department of Chemistry, Islamic Azad University Damghan Branch, PO Box 36716-39998, Damghan, Iran

    Flotation-spectrophotometric method for the

    15-02-2005· 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 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 = 5.96 × 105 1 mol−1 cm

    Flotation-Spectrophotometric Method for the Determination

    Abstract: 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 8.35 ×10 4 L mol −1 cm-1. The calibration curve was linear in

    Sensitive spectrophotometric determination of osmium

    Sensitive spectrophotometric determination of osmium with tin(II) chloride and Rhodamine B after flotation using cyclohexane M. Balcerzak, Analyst,1988, 113,129 DOI: 10.1039/AN9881300129

    Sensitive flotation-spectrophotometric determination of

    A method of flotation separation with subsequent sensitive spectrophotometric determination of niobium is developed. In the presence of oxalate, niobium and 3,5-dinitrocatechol form an anionic complex able to associate with Rhodamine B (RB). The niobium compound is 'floated' with cyclohexane, dissolved in acetone and the absorbance of the solution is measured at 555 nm.

    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 (MB), has been developed. The ion associate is floated with benzene and dissolved in acetone, and its molar absorptivity is

    Selective Flotation-Spectrophotometric Procedure for the

    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 flotation-determination method was achieved in the pH range 2.5 7.0. Beer’s law was obeyed up to 6×10-5 mol l-1 (6.3 ppm).

    Lobinski, R. and Marczenko, Z. (1989) Sensitive Flotation

    Lobinski, R. and Marczenko, Z. (1989) Sensitive Flotation-Spectrophotometric Determination of Niobium with Use of Oxalate, 3,5-Dinitrocatechol and Rhodamine B. Analytica Chimica Acta, 226, 281.

    Sensitive spectrophotometric determination of osmium

    Sensitive spectrophotometric determination of osmium with tin(II) chloride and Rhodamine B after flotation using cyclohexane

    A selective flotation-spectrophotometric method for the

    ARTICLE . A selective flotation-spectrophotometric method for the determination of nickel using dimethylglyoxime . Hamid Hashemi-Moghaddam *. Department of Chemistry, Islamic Azad University Damghan Branch, PO Box 36716-39998, Damghan, Iran

    A SENSITIVE SPECTROPHOTOMETRIC METHOD FOR

    26-02-2021· ABSTRACT This paper discusses a quick and easy spectrophotometric approach for the estimation of promethazine HCl drug in a pure and pharmaceutical formulation. This system relies on the instruction of colour ion-pair between complexes. Promethazine HCl is reacted in acidic medium with methyl blue dye resulting in the formulation of a coloured product with a maximum absorption of 480 nm.

    Sensitive flotation-spectrophotometric determination of

    01-01-1989· A method of flotation separation with subsequent sensitive spectrophotometric determination of niobium is developed. In the presence of oxalate, niobium and 3,4-dinitrocatechol form an anionic complex able to associate with Rhodamine B (RB).

    Sensitive flotation-spectrophotometric determination of

    01-01-1983· Sensitive flotation-spectrophotometric methods are based on the ion-associates formed by the anionic chlorostannate(II) complex of platinum with the basic dyes rhodamine 6G, Victoria blue B, Victoria blue 4R and Capri blue.

    Sensitive flotation-spectrophotometric determination of

    Sensitive flotation-spectrophotometric determination of gold, based on the gold(I)-iodide-methylene blue system. Marczenko Z(1), Jankowski K. Author information: (1)Department of Analytical Chemistry, Technical University, Warsaw, Poland.

    Sensitive flotation-spectrophotometric determination of

    15-11-1989· A method of flotation separation with subsequent sensitive spectrophotometric determination of niobium is developed. In the presence of oxalate, niobi

    Sensitive flotation-spectrophotometric method for the

    01-03-1994· Read "Sensitive flotation-spectrophotometric method for the determination of vanadium (IV) with 3,5-dinitrosalicylic acid and rhodamine B, Analytical and Bioanalytical Chemistry" on DeepDyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips.

    Sensitive flotation-spectrophotometric determination of

    01-04-1985· 01-04-1985· We have used the sparingly soluble ion-association compounds formed by some anionic complexes of platinum metals with appropriate basic dyes to de- velop very sensitive flotation-spectrophotometric methods for determination of all six platinum metals.''8 The molar absorptivities (e) are in the range 1.7-4.0 x 105 l.mole^'.cm"', because one atom of metal is associated

    Sensitive flotation-spectrophotometric determination of

    01-06-1988· 01-06-1988· The reaction of various chloride complexes of ruthenium with tin(II) chloride has been studied and the optimum conditions (the hydrochloric acid and t

    Sensitive flotation—spectrophotometric determination of

    01-07-1979· Two sensitive, precise spectrophotometric methods for the determination of rhodium with malachite green are proposed. The anionic rhodium complex with tin(II) chloride yields an ion associate with malachite green; on shaking the solution (in 6.5 M HCl) with benzene, the sparingly soluble ion associate (rhodium: malachite green =1:2) precipitates at the phase boundary.

    Sensitive flotation-spectrophotometric determination of

    01-01-1985· 01-01-1985· Sensitive flotation-spectrophotometric methods for the determination of all six platinum metals have been described [1-7]. The methods are based on ion-associates of basic dyes with polyvalent anionic complexes of these metals.

    A sensitive and simple flotation-spectrophotometric method

    03-05-2008· 03-05-2008· A simple and sensitive spectrophotometric procedure for the determination of microgram amounts of silver has been developed. The method is based on the flotation of the complex of Schiff base, 2-[(2-mercaptophenylimino)methyl]phenol (MPMP), and silver at the aqueous solution-chloroform interface. The complex was then separated and dissolved in 5 mL of methanol,

  •