This has led to the development of a wide variety of spectrophotometric methods for the determination of nickel [11][12][13][14][15][16][17][18][19][20][21][22][23][24][25][26] [27] [28][29 ...
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 HgI 4 2– and ferroin between aqueous and …
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 1.83 × 10 5 1 mol −1 cm −1 at 530 nm.
Selective Flotation-Separation and Spectrophotometric Determination of Cadmium Using Phenanthraquinone Monophenythiosemicarbazone ... [Benzo thiazolyl azo]-4,5-diphenyl imidazole was prepared and used as complexing agent for separation and spectrophotometric determination of Cu 2+ ion in some samples include plants, soil, …
The relative standard deviation (RSD) for determination of 100 and 800 ng mL -1 of CPC was 3.47 and 2.04% (n=7), respectively. The method was successfully applied to the determination of CPC in a ...
Marczenko, Z., and Jarosz, M., Flotation-spectrophotometric determination of pal- ladium with thiocyanate and mhyle blue. Analyst 106, 751 (1981). …
The parameters that influence the flotation and spectrophotometric determination of Co(II) were studied. Beer's law was obeyed over a concentration range 0.01-0.32
This has led to the development of a wide variety of spectrophotometric methods for the determination of nickel …
Analytîca Chîmîca Acta. 87 (1976) 463—471 ©Eisevier Scientific Publishing Company, Amsterdam—Printed in The Netherlands SPECTROPHOTOMETRIC DETERMINATION OF FLOTATION COLLECTORS AND ORGANIC REAGENTS IN ORE TREATMENT PROCESS LIQUORS AND EFFLUENTS WITH AN ATOMIC …
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 colored complex which is formed between Fe(III) and 2-carboethoxy-l,3-indandione sodium salt (CEIDNa). The colored 1:3 (Fe: reagent) …
Flotation-Spectrophotometric Determination of Chem Pharm Bull (Japan) 49, 664-668(2001).
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.
A simple, sensitive and reproducible flotation-spectrophotometric method for the determination of thorium is reported. The method is based on the ion-associate formation between thorium, xylenol orange (XO) and cethyltrimethyl ammonium bromide (CTAB) which is floated in the interface of the aqueous phase and n-hexane by vigorous …
Flotation-Spectrophotometric Determination of Ruthenium in the Ru(lV)-Chloride-Rhodamine 6G-Toluene System. The reduction of RuO 4 in hydrochloric acid has been examined. A sensitive flotation-spectrophotometric method of the determination of ruthenium based on the ion associate formed by the anionic chloride complex of …
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. The proposed procedure is …
Flotation–Spectrophotometric Determination of Mercury in Water Samples Using Iodide and Ferroin. MS Hosseini, H Hashemi-Moghaddam. Analytical sciences 20 (10), 1449-1452, 2004. 39: 2004: Synthesis of polydopamine as a new and biocompatible coating of magnetic nanoparticles for delivery of doxorubicin in mouse breast adenocarcinoma.
This paper describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of trace amounts of mercury. …
Using air flotation, the extraction solvent is transferred to the surface of the mixture and is collected by means of a micro-syringe. ... of Lead from Water Using Homogeneous Liquid–Liquid Microextraction via Flotation Assistance Method and UV-Vis Spectrophotometric Determination. J. Water Chem. Technol. 40, 291–296 …
The present study describes a simple and highly selective method for separation, preconcentration and spectrophotometric determination of extremely low …
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.
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. The proposed procedure is …
DOI: 10.1016/S0003-2670(00)81645-1 Corpus ID: 97400736; Sensitive flotation-spectrophotometric determination of gold based on the gold(III)/bromide/rhodamine 6G system @article{Marczenko1985SensitiveFD, title={Sensitive flotation-spectrophotometric determination of gold based on the gold(III)/bromide/rhodamine …
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 HgI 4 2– and ferroin between aqueous and n-heptane interface at pH 5. The ion-associate was then separated and dissolved in ...
Optimum conditions for flotation-spectrophotometric determination of iron with 4-(2-pyridylazo)resorcinol (PAR) based on a 1:2 FeII-PAR complex were found to be as follows: flotation solvent (chloroform), shaking time (2 min), pH (4.5±0.5), concentration of PAR (2.0×10–4 mol L–1), reducing agent (hydroxylamine …
A literature survey showed that ion-flotation followed by a spectrophotometric determination of Cu(II) is rarely reported [17, 26]. Also, no attempt has been found for using NaPAR and oleic acid ...
A new spectrophotometric method for the determination of Pd(II) in the system of Pd(II)-2-mercapto-β- naphthalenethiazole (MNT) by floatation with N2 - methylbenzene was established.
A simple, selective and sensitive procedure is described for the preconcentration by flotation followed by spectrophotometric determination of trace amounts of Cd(II). Cadmium forms an intense red 1:2 complex with phenanthraquinone monophenylthiosemicarbazone (PPT) at pH > or = 6. The colored Cd- …
An intense clear violet layer was formed after flotation, by adding an oleic acid (HOL) surfactant. 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.
A sensitive and accurate method is described for the determination of phosphate with bis[2-(5-chloro-2-pyridylozo)-5-diethylaminophenolato]cobalt(III) chloride (Co-5-CI-PADAP). The ion pair of Co-5-CI-PADAP with molybdophos-phate was floated at the phase boundary between aqueous phase and butyl acetate phase when the aqueous phase was …
Fig. 1 Effect of pH on the flotation process at the conditions where: CKI = 1.2 × 10–3 mol l–1, CFerroin = 3.12 × 10–5 mol l–1, and CHg = 7.5 × 10–7 mol l–1. - "Flotation-spectrophotometric determination of mercury in …
The method is sensitive and it is the novelty of the work for flotation-spectrophotometric determination of Cr(III). This method is based on the formation of ion associate complex between Cr(III ...
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 …
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
Recently, flotation-spectrophotometric method for the determination of rhodium with malachite green {10), platinum with crystal violet (//), palladium with mhyle blue (8) or rhodamine 6G (9), and osmium with mhyle blue (/2), …
A simple, sensitive and reproducible flotation-spectrophotometric method for the determination of thorium is reported. The method is based on the ion-associate formation between thorium, xylenol ...
