Spectrophotometric Study of Ternary Complex Forming Systems of Some Lanthanide Metal Ions with Eriochrome Cyanine R in Presence of Cetylpyridinium Bromide for Microdetermination

Dhepe, A. S.; Zade, Anil B.

doi:10.1155/2011/871685

Cited by 4 publications

(1 citation statement)

References 8 publications

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“…Spectrophotometric study of ternary complex forming systems of dysprosium (III) and holmium (III) with pyrogallol red and some lanthanide metal ions with eriochromecyanine R in presence of cetylpyridinium bromide for microdetermination have been reported by A. S. Dhepe and A. B. Zade 14,15 . Magda Ali Akl et al have discussed the extraction, preconcentration and determination of microamounts of lanthanum and yttrium using alizarin red sulfonate (ARS) of a metal complex via surfactant-mediated phase separation 16 .…”

Section: Introductionmentioning

confidence: 98%

Sensitization of Eriochromeazurol‐B in Presence of Cetyldimethylethylammonium Bromide for the Microdetermination of Some Lanthanides

Zade¹,

Kalbende²,

Umekar³

et al. 2011

Journal of Chemistry

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Cetyldimethylethylammonium bromide, a cationic surfactant has been used to decolorize eriochromeazurol B, an anionic triphenylmethane type of dye. Addition of specific lanthanide metal ion to this decolorized solution resulted into intense colored stable ternary complex with large bathochromic shift from 540 nm (binary complex) to 650 nm (ternary complex) with increase in absorbance values at shifted wavelength. CDMEAB thus decreases the color intensity of ECAB and increases the absorbance value of ternary complexes. This two fold advantage resulted into enhancement in molar absorptivities and sensitivities at shifted wavelength of ternary complexes with stoichiometric composition 1:(1:3)2, [Ln : (R:S)] for all lanthanides understudy namely yttrium, neodymium, europium, terbium and ytterbium. The ternary complexes at pH 6.0 exhibited absorption maxima at 650 nm with molar absorptivities 69000 L.mol-1.cm-2for Y(III), 66000 L.mol-1.cm-2for Nd(III), 69000 L.mol-1.cm-2for Eu(III), 64000 L.mol-1.cm-2for Tb(III), 70000 L.mol-1.cm-2for Yb(III). Beer's law were obeyed in concentration range 0.11-0.94, 0.19-1.53, 0.2-1.41, 0.21-1.69 and 0.23-1.11 ppm for Y(III), Nd(III), Eu(III), Tb(III) and Yb(III) respectively. Conditional formation constants and various analytical parameters have been evaluated and compared the results of newly formed ternary complexes with binary complexes. Finally newly suggested modified method have been recommended for the microdetermination of lanthanides understudy.

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Section: Introductionmentioning

confidence: 98%

Sensitization of Eriochromeazurol‐B in Presence of Cetyldimethylethylammonium Bromide for the Microdetermination of Some Lanthanides

Zade¹,

Kalbende²,

Umekar³

et al. 2011

Journal of Chemistry

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Micelle-mediated preconcentration using cationic surfactants for the spectrophotometric determination of uranium in aqueous solutions

Akl

2015

J Radioanal Nucl Chem

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Studies on Precision and Accuracy In Microdetermination of Transition Metals Using Ternary Complex EAB-CTAB-Metals

Deshmukh¹

2018

Orient. J. Chem

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Complexometric and Analytical studies have carried out by forming ternary complex between Eriochrome Azurol B, and Cetyl Trimethyl Ammonium Bromide CTAB; and some transition metal ions mainly Cu2+, Ni2+ and Cd2+. The absorption spectra of Eriochrome Azurol B ,EAB; a triphenylmethane dye, has studied in the presence as well as in the absence of surfactant, Cetyl Trimethyl Ammonium Bromide, CTAB at pH values ranging from pH 1.00 to 12.00. Hypsochromic shift is observed in the absorption spectra in the presence of surfactant pK values i.e. dissociation constant values are found to decreased, in the presence of surfactant is observed. Composition of chelates EAB:CTAB:Metal is found to be 1:1:1, and effect of foreign ions such as chlorides, nitrates; and sulphates of sodium, potassium and ammonium; has been studied in detail. Stability constants of the chelates are determined. Sensitivity and Stability of chelates formedincreases in the presence of surfactant. Various analytical parameters including range of adherence to Beers Law, Molar Extinction Constants, Sandells Sensitivity, were studied for all systems by its interaction with and without CTAB. Precision and Accuracy of the method suggested for microdetermination of metal ions is determined and found out that method is both precise as well as accurate.

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Spectrophotometric Study of Ternary Complex Forming Systems of Some Lanthanide Metal Ions with Eriochrome Cyanine R in Presence of Cetylpyridinium Bromide for Microdetermination

Cited by 4 publications

References 8 publications

Sensitization of Eriochromeazurol‐B in Presence of Cetyldimethylethylammonium Bromide for the Microdetermination of Some Lanthanides

Sensitization of Eriochromeazurol‐B in Presence of Cetyldimethylethylammonium Bromide for the Microdetermination of Some Lanthanides

Micelle-mediated preconcentration using cationic surfactants for the spectrophotometric determination of uranium in aqueous solutions

Studies on Precision and Accuracy In Microdetermination of Transition Metals Using Ternary Complex EAB-CTAB-Metals

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