Flotation Spectrophotometric Determination of Aluminium with Alizarin

Chamsaz, Mahmoud; Zavar, Mohammad Hossein Arbab; Hosseini, Mohammad Said

doi:10.1080/00032710008543149

Cited by 29 publications

(19 citation statements)

References 17 publications

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“…16, flotationspectrophotometry probably provides the most sensitive, relatively simple and fast approach to trace metal analysis. [17][18][19][20][21][22][23][24] The aim of this work is to present a simple method for the separation and spectrophotometric determination of Tl(I) ions using iodide and Rhodamine B, as an ion-associated complex, via the flotation process. The method has been found to be suitable for the determination of Tl(I) at levels down to 0.2 µg in a final volume of 30 ml.…”

Section: Introductionmentioning

confidence: 99%

Determination of Thallium(I) by Flotation-Spectrophotometric Method Using Iodide and Rhodamine B

Hosseini

Naseri

2003

ANAL. SCI.

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Section: Introductionmentioning

confidence: 99%

Determination of Thallium(I) by Flotation-Spectrophotometric Method Using Iodide and Rhodamine B

Hosseini

Naseri

2003

ANAL. SCI.

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“…[9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] Primary investigations showed that the none of two usual complexes of Ni and DMG could not float completely in interface of liquid and organic phase due to solubility in water and organic phase of Ni(Dm) 3 2-and Ni(HDm) 2 , respectively. Thus a different complex of Ni and DMG was studied.…”

Section: Introductionmentioning

confidence: 99%

A selective flotation-spectrophotometric method for the determination of nickel using dimethylglyoxime

Hashemi‐Moghaddam¹

2011

J. Braz. Chem. Soc.

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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 determinado por espectrofotometria. A flotação quantitativa do complexo foi possível no intervalo de pH de 9-12. O método é simples e livre da interferência de todos os cátions e ânions e apresenta um grande intervalo linear. O procedimento foi aplicado com sucesso na determinação de traços de níquel em águas de poços e águas residuais de um processo de eletrodeposição. A exatidão do método foi avaliada usando material de referência certificado (NIST 864) e enriquecendo as amostras com diferentes quantidades de Ni 2+ .A simple and selective method for separation and preconcentration of nickel has been developed. The method is based on the flotation of a complex of Ni and dimethylglyoxime (DMG) at the aqueous solution-n-hexane interface. The complex was separated and Ni determined spectrophotometrically by DMG after addition of oxidizing agent. The quantitative flotation of the complex was possible in the pH range of 9-12. The method is simple and free from the interference of all cations and anions and has a wide linear range. The procedure was successfully applied to the determination of trace amounts of nickel in well water and waste water in coating plant. The method's accuracy was investigated by using standard reference materials alloys (NIST 864) and by spiking the samples with different amounts of Ni 2+ . Keywords: flotation, spectrophotometry, dimethylglyoxime, nickel IntroductionNickel 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, which enters from land-based resources, such as oxidic and sulfide ores or industrial sources, such as spent catalysts, alloy scrap, sludge, dust, and wastewater. 2 Dimethylglyoxime (DMG) is widely used and for the spectrophotometric determination of nickel 3,4 it has also been used for separation and preconcentration of Ni by liquid-liquid extraction 5 or solid phase extraction 6-8 but all of these separation methods suffer from lack of selectivity. For example, metal ions such as Ni(II), Pb(II), Mn(II), Bi(III), Co(II), Cd(II), Zn(II), and Fe(II) could interfere at concentrations higher than 5 mg L -1 in solid phase extraction of Ni 2+ using DMG as a complexing agent. 8 This paper deals with a selective and simple method for separation and preconcentration of Ni with DMG.Flotation spectrophotometry allows one to preconcentrate the trace elements in various materials. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] Primary investigations showed that the none of two usual complexes of Ni and DMG could not float completely in interface of liquid and organic phase due to solubility in water and organic phase of Ni(Dm) 3 2-and Ni(HDm) 2 , respectively. Thus a different ...

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“…reagents for the determination of trace amounts of various metal Hence, utilizing analytical techniques, including ions in water samples. [28][29][30][31][32] On the other hand, 1,4 voltammetry, 8,9 chromatography, 10,11 spectrophotometry, [12][13][14][15][16] and diaminoanthraquinone (1,4-DAAQ) has also been used as a spectrofluorometry [17][18][19] has been successfully developed for the fluorescence quencher 33 and for the synthesis of conducting determinations in different sample matrices. Among them, the organic materials based on either complexation or oxidation last two techniques utilizing Cr(VI)-selective methods are of behaviors.…”

Section: Introductionmentioning

confidence: 99%

Speciation Determination of Chromium Using 1,4-Diaminoanthraquinone with Spectrophotometric and Spectrofluorometric Methods

Hosseini

Asadi

2009

ANAL. SCI.

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A highly sensitive and selective method has been proposed for speciation determination of trace amounts of Cr(III) and Cr(VI) in water samples using 1,4-diaminoanthraquinone (1,4-DAAQ). The method is based on mixing an organic phase containing 1,4-DAAQ with an acidic solution (pH 1) of Cr(VI), which is accomplished with absorbance decreasing or luminescence quenching of the organic phase due to a partial oxidation of the 1,4-DAAQ content. After oxidation of Cr(III) to Cr(VI) and determining the total chromium content, Cr(III) content is obtained by subtracting. All of the variables were studied in order to optimize the reaction conditions. No considerable interference was observed due to the presence of coexisting anions and cations. The calibration graphs were linear in the range 3.0×10 -7 -3.0×10 -6 and 1.0×10 -7 -4.0×10-6M with detection limits of 3.5×10 -8 and 2.1×10 -9 M for absorptiometry and fluorometry, respectively. Validation of the measurements was confirmed using standard reference materials and a certificated method.

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Flotation Spectrophotometric Determination of Aluminium with Alizarin

Cited by 29 publications

References 17 publications

Determination of Thallium(I) by Flotation-Spectrophotometric Method Using Iodide and Rhodamine B

Determination of Thallium(I) by Flotation-Spectrophotometric Method Using Iodide and Rhodamine B

A selective flotation-spectrophotometric method for the determination of nickel using dimethylglyoxime

Speciation Determination of Chromium Using 1,4-Diaminoanthraquinone with Spectrophotometric and Spectrofluorometric Methods

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