Application of ternary and multicomponent complexes to spectrophotometric and spectrofluorimetric analysis of inorganics

Rao, T. Prasada; Reddy, M. L. P.; Pillai, A. Ramalingom

doi:10.1016/s0039-9140(97)00262-2

Cited by 44 publications

(14 citation statements)

References 220 publications

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“…Separate sections are devoted to advances in both spectrophotometric and spectrofluorimetric determination of individual elements. Future trends in spectrophotometric and spectrofluorimetric analysis are discussed [3].…”

Section: Introductionmentioning

confidence: 99%

Spectroscopic Investigation of the Complex Formation of Niobium Using 2,6-Dithiolphenol and Aminophenols

Kuliyev¹,

Verdizadeh²

2015

AJAC

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A new, simple, precise, selective and sensitive method for the extraction and spectrophotometric determination of niobium has been described. Mixed-ligand complexes of Niobium (V) with 2,6-dithiolphenol (DTP) and aminophenols (AP) have been studied by spectrophotometry. Extraction of mixed-ligand complexes is maximal at pH 3.6 -5.0. The optimal conditions for the formation and extraction of mixed-ligand compounds have been found. The molar ratio of the reacting species was 1:2:2 (Nb:DTP:AP). The Beer's law was applicable in the range of 0.05 -4.0 μg/ml. The method is free from common interferences. A procedure has been developed for extraction-spectrophotometric determination of Niobium in steel.

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Section: Introductionmentioning

confidence: 99%

Spectroscopic Investigation of the Complex Formation of Niobium Using 2,6-Dithiolphenol and Aminophenols

Kuliyev¹,

Verdizadeh²

2015

AJAC

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“…14,15 Although these methods can exhibit low detection limits, they are time consuming, expensive and suffer from serious matrix interferences.…”

Section: Introductionmentioning

confidence: 99%

On-line Flow-injection Liquid-phase Microextraction and Spectrophotometric Determination of Traces of Copper(II) with Trithia-9-crown-3 as Complexing Agent

2013

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A novel on-line flow-injection liquid-phase microextraction (FI-LPME) and spectrophotometric determination of the Cu 2+ ion using trithia-9-crown-3 (TT9C3) as a sensitive and selective charge transfer complexing agent was developed. After phase segmentation by pulsating motions of a peristaltic pump, the phase separation takes place by the aid of gravitation forces. The optimum values of the pH (= 5 of phosphate buffer) and ionic strength (5 mM Na2SO4) of the solution, amount of ligand (2.0 × 10 -3 mol L -1 ), nature of the counter ion (10 mM SDS), volume of the organic solvent (150 μL), coil length (3 m) and extraction time (2 min) for an efficient extraction were determined. The calibration curve was found to be linear over a concentration range of 0.008 -4.2 μg mL -1 (R 2 = 0.9985) with a limit of detection of 0.37 ng mL -1 . The enrichment factor and relative standard deviation (n = 7) were 16 and 5.7%, respectively. Finally, the proposed method was applied to the determination of copper(II) as an impurity in the several commercial metallic salts.

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“…A number of reagents [13][14][15][16][17][18] including xylenol orange, thiocyanate, chlorsulfophenol S, toluene-3,4-dithol, 2-amino-4-chlorobenzenethiol, phenylfluorone, catechol violet, morin, 8-hydroxyquinoline, thiazolylazo compounds, 7,8-dihydroxy-4-methylcoumarin and bromopyrogallol red have been proposed for the determination of molybdenum.…”

Section: Introductionmentioning

confidence: 99%

Cloud-point preconcentration and spectrophotometric determination of trace amounts of molybdenum(VI) in steels and water samples

Madrakian

Ghazizadeh

2008

Journal of Hazardous Materials

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Application of ternary and multicomponent complexes to spectrophotometric and spectrofluorimetric analysis of inorganics

Cited by 44 publications

References 220 publications

Spectroscopic Investigation of the Complex Formation of Niobium Using 2,6-Dithiolphenol and Aminophenols

Spectroscopic Investigation of the Complex Formation of Niobium Using 2,6-Dithiolphenol and Aminophenols

On-line Flow-injection Liquid-phase Microextraction and Spectrophotometric Determination of Traces of Copper(II) with Trithia-9-crown-3 as Complexing Agent

Cloud-point preconcentration and spectrophotometric determination of trace amounts of molybdenum(VI) in steels and water samples

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