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a c e u t i c a Analytica r h cta Pharmaceutica Analytica Acta

Keywords: Copper; 4-(2-pyridyl-azo) resorcinol mono sodium mono hydrate (NaPAR); Flotation; Spectrophotometry; Drugs Introduction Heavy metals are of the great importance for the life. Some of these such as Cu, Zn, Co, Fe are essential to humans [1]. Others such as Hg, Cd and Pb are toxic following occupational and environmental exposure [2].

Cited by: 4

Floatation-spectrophotometric Determination of Thorium ...

Keywords: flotation-spectrophotometric, thorium, Eriochrome cyanine R Introductory Statement Thorium has extensively been used in a variety of applications such as industrial, energy and environmental issues. 1 – 3 Due to negative impacts of thorium such as toxicity, radio toxicity and carcinogenic properties, such kind of applications ...

Cited by: 9

Flotation-spectrophotometric determination of trace of ...

A flotation spectrophotometric method for the determination of germanium with isochromatic dye ion-pairs is described. The molar ratio of germanium to rhodamine 6G to tetrabromofluorescein is 1:5:5. The apparent molar absorptivity is 5.8 × 10 5 l mol −1 cm −1 at 531 nm.

Cited by: 5

Flotation-spectrophotometric determination of praseodymium ...

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.

Cited by: 18

Flotation–Spectrophotometric Method for Separation and ...

spectrophotometry [3, 4]. Different preconcentration-spectrophotometric methods [5-12], solvent-extraction-spectrofluorimetry [13] and chromato-graphic [14] methods are used for trace quantitative determination of Cu2+. This paper presents a flotation– spectrophotometric method for quantitative determ-ination of Cu2+. The method is based on the

_ HEMIJSKA INDUSTRIJA - ACHE Publishing

A new, simple, rapid, sensitive and selective kinetic spectrophotometric method for Pd(II) traces determination was elaborated in this paper. It is based on the catalytic effect of palladium ions upon the oxidation of methylene blue B (MBB) by (NH 4) 2 S 2 O 8 (APS) in citric buffer (BUF) solution. At the working temperature of 25 °C and the wavelength of 662.4 nm, the optimal conditions for ...

c a l s m i ou h e rnl Chemical Sciences Journal ISSN ...

flotation, separation, elution and spectrophotometric and or flame AAS determination of Cu(II), were carried out. Results and Discussion. Absorption spectra. The absorption spectra of Cu-PTHAC in the aqueous and organic . layers are completely different from that of PTHAC reagent. PTHAC reagent exhibits a maximum absorbance at 570 nm. The ...

Separation and pre-concentration of Sunset Yellow in ...

Aug 26, 2019  (2019). Separation and pre-concentration of Sunset Yellow in beverages and effervescent vitamin C tablets by a new flotation technique prior to spectrophotometric determination. Food Additives Contaminants: Part A: Vol. 36, No. 11, pp. 1605-1615.

Floatation-Spectrophotometric Determination of Thorium ...

Keywords flotation-spectrophotometric, thorium, Eriochrome cyanine R Introductory Statement Thorium has extensively been used in a variety of applications such as industrial, energy and environmental issues. 1 – 3 Due to negative impacts of thorium such as toxicity, radio toxicity and carcinogenic properties, such kind of applications ...

Flotation-Spectrophotometric Method for the Determination ...

Present paper shows a flotation-spectrophotometric method for (Al 3+-XO)-CTA + ternary ion-associate in to the interface between aqueous and n-hexane phase by flotation method. The effect of standing time, concentrations of surfactant, xylenol orange and salt on the flotation-spectrophotometric of

Synergistic flotation of U(VI)–alizarin complex with some ...

In this work, synergistic flotation of U(VI)–alizarin complex at the presence of some diamine compounds was firstly investigated by the spectrophotometric method. The flotation process was carried out on aliquots of 100 ml of U(VI) solutions containing alizarin and the diamine at pH of 5.00 using n -heptane.

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

Mar 01, 2011  Keywords: flotation–extraction, lead, alizarin yellow, spectrophotometry Introduction The impact of the effects of trace chemical species in the environmental and industrial samples on human health has fostered development of analytical techniques capable of addressing these issues.

a c e u t i c a Analytica r h cta Pharmaceutica Analytica Acta

Keywords: Copper; 4-(2-pyridyl-azo) resorcinol mono sodium mono hydrate (NaPAR); Flotation; Spectrophotometry; Drugs Introduction Heavy metals are of the great importance for the life. Some of these such as Cu, Zn, Co, Fe are essential to humans [1]. Others such as Hg, Cd and Pb are toxic following occupational and environmental exposure [2].

Flotation–Spectrophotometric Method for Separation and ...

spectrophotometry [3, 4]. Different preconcentration-spectrophotometric methods [5-12], solvent-extraction-spectrofluorimetry [13] and chromato-graphic [14] methods are used for trace quantitative determination of Cu2+. This paper presents a flotation– spectrophotometric method for quantitative determ-ination of Cu2+. The method is based on the

Separation via Flotation and Spectrometric Determination ...

Citation: Akl MA, Mostafa MM, Elbadrawy Z (2014) Separation via Flotation and Spectrometric Determination of Copper(II) in Environmental Samples using a Newly Synthesized Girard T Derivative.

Flotation-spectrophotometric determination of rhodium ...

The effect of the organic solvent on the flotation has been observed. The compound with Rhodamine 6G, separated and washed, is dissolved in acetone. The acetone solution is a basis of the developed sensitive and precise flotation-spectrophotometric method. The molar absorptivity in this method is 4.0×105 at 530 nm.

Separation and pre-concentration of Sunset Yellow in ...

Aug 26, 2019  (2019). Separation and pre-concentration of Sunset Yellow in beverages and effervescent vitamin C tablets by a new flotation technique prior to spectrophotometric determination. Food Additives Contaminants: Part A: Vol. 36, No. 11, pp. 1605-1615.

Flotation-Spectrophotometric Method for the

Present paper shows a flotation-spectrophotometric method for (Al 3+-XO)-CTA + ternary ion-associate in to the interface between aqueous and n-hexane phase by flotation method. The effect of standing time, concentrations of surfactant, xylenol orange and salt on the flotation-spectrophotometric of

Floatation-spectrophotometric Determination of Thorium ...

Keywords: flotation-spectrophotometric, thorium, Eriochrome cyanine R Introductory Statement Thorium has extensively been used in a variety of applications such as industrial, energy and environmental issues. 1 – 3 Due to negative impacts of thorium such as toxicity, radio toxicity and carcinogenic properties, such kind of applications ...

(PDF) Flotation-Spectrophotometric Investigations on an ...

The optimum conditions for zirconium (IV) flotation and spectrophotometric determination as an ion-association complex were found: flotation solvent (chloroform), shaking time (2 min), pH (6.0-6.1 ...

Flotation-spectrophotometric determination of traces of ...

A sensitive method for the determination of traces of P in Fe, Ni, Co, Cu and Zn is based on the formation of an ion-associate with molybdate and malachite green, whose absorbance is measured at 620 nm. The calibration curve is linear up to 0.10 μg/ml; molar absorptivity is 2.7×105 l mol−1 cm−1. It was found that commonly coexisting elements did not interfere.

Hamid Hashemi-Moghaddam* - SciELO

Keywords: flotation, spectrophotometry, dimethylglyoxime, nickel Introduction Nickel is an important constituent of several steel alloys. Its determination is required to control both raw material and industrial products.1 In addition it is readily encountered in the environment,

Sensitive flotation-spectrophotometric determination of ...

The method has been applied to the determination of osmium in mixtures of platinum metals. When xylene is used as flotation agent, osmium separates at a different acidity (pH 1.3–5), as a simple ion-association complex \([(R6G^ + )_2 (OsCl_6 ^{2 - } )]\). The spectrophotometric method involving xylene is less sensitive (by a factor of about 2).

Floatation-Spectrophotometric Determination of Thorium ...

Keywords flotation-spectrophotometric, thorium, Eriochrome cyanine R Introductory Statement Thorium has extensively been used in a variety of applications such as industrial, energy and environmental issues. 1 – 3 Due to negative impacts of thorium such as toxicity, radio toxicity and carcinogenic properties, such kind of applications ...

(PDF) Flotation-Spectrophotometric Investigations on an ...

The optimum conditions for zirconium (IV) flotation and spectrophotometric determination as an ion-association complex were found: flotation solvent (chloroform), shaking time (2 min), pH (6.0-6.1 ...

Flotation-spectrophotometric determination of traces of ...

A sensitive method for the determination of traces of P in Fe, Ni, Co, Cu and Zn is based on the formation of an ion-associate with molybdate and malachite green, whose absorbance is measured at 620 nm. The calibration curve is linear up to 0.10 μg/ml; molar absorptivity is 2.7×105 l mol−1 cm−1. It was found that commonly coexisting elements did not interfere.

Hamid Hashemi-Moghaddam* - SciELO

Keywords: flotation, spectrophotometry, dimethylglyoxime, nickel Introduction Nickel is an important constituent of several steel alloys. Its determination is required to control both raw material and industrial products.1 In addition it is readily encountered in the environment,

Sensitive flotation-spectrophotometric determination of ...

The method has been applied to the determination of osmium in mixtures of platinum metals. When xylene is used as flotation agent, osmium separates at a different acidity (pH 1.3–5), as a simple ion-association complex \([(R6G^ + )_2 (OsCl_6 ^{2 - } )]\). The spectrophotometric method involving xylene is less sensitive (by a factor of about 2).

Floatation-Spectrophotometric Determination of Thorium ...

Keywords flotation-spectrophotometric, thorium, Eriochrome cyanine R Introductory Statement Thorium has extensively been used in a variety of applications such as industrial, energy and environmental issues. 1 – 3 Due to negative impacts of thorium such as toxicity, radio toxicity and carcinogenic properties, such kind of applications ...

Development of a flotation-spectrophotometric method for ...

Keywords: flotation-spectrophotometry; cetylpyridinium chloride; Orange II. INTRODUCTION Flotation-spectrophotometry probably provides one of the most sensitive, relatively simple and fast approach to trace analysis. 1 Ion-association systems, in a more general way, could be said to result from the interaction of charged particles or complexes ...

Analytical Chemistry Insights - SE Journals

Analytical Chemistry Insights OrIgInAL reSeArCh Analytical Chemistry Insights 2011:6 15 Determination of Trace Amounts of Lead Using the Flotation-spectrophotometric method Sabah Shiri1, Ali Delpisheh2, Ali haeri3, Abdolhossein Poornajaf2, Babak golzadeh4 and Sina Shiri1 1Department of Chemistry, Payame noor University of Ilam, Iran.

A sensitive and simple flotation-spectrophotometric method ...

Abstract. 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

A selective flotation-spectrophotometric method for the ...

Keywords: flotation, spectrophotometry, dimethylglyoxime, nickel. RESUMO. Um método simples e seletivo para a separação e pré-concentração de níquel foi desenvolvido. O método é baseado na flotação de um complexo de Ni e dimetilglioxima (DMG) na interface de uma solução aquosa com n-hexano. O complexo Ni-DMG foi separado e ...

Flotation Separation Scientific.Net

Abstract: The paper presents a novel method for the flotation separation of Cu 2+ using microcrystalline adsorption system and the determination of trace Cu 2+ in water samples by spectrophotometry. The effects of the dosages of KI, ascorbic acid (AA) and cetyl pyridinium chloride (CPC),various salts and acidity on the flotation yield of Cu 2+ have been investigated.

Study on Spectrophotometric Determining Trace Tetracycline ...

A novel and green method for separating and enriching trace tetracycline(TC) in environment water by phase-separation Floatation has been proposed,the principium was discussed. In this paper,the hydrophobic complex composed of Al(III) and TC was floated into organic phase under the optimal conditions: PH=6.2, the floatation equipment is home-made, The n-propyl alcohol is organic solvent ...

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

Keywords flotation–extraction, lead, alizarin yellow, spectrophotometry Introduction The impact of the effects of trace chemical species in the environmental and industrial samples on human health has fostered development of analytical techniques capable of addressing these issues.

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

Dec 20, 2010  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.

Floatation-spectrophotometric Determination of Thorium ...

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 ...