Rapid titrimetric determination of thorium with fluoride using SPADNS

Banerjee, Gurupada

doi:10.1007/bf00440623

Cited by 24 publications

(2 citation statements)

References 9 publications

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“…The most common analytical techniques used to determine yttrium in monazite mineral as gravimetric [Arora, H. C. and Rao, G. N.; 1981], volumetric [Banjeree, G.;1955], and energy dispersive X-ray fluorescence [Mirashi, N. N. et al; 2010], The total rare earths was determined spectrophotometrically by Arzenazo(III) method [Marczenko;1986] using the absorption band at 650 nm on a double beam of high-resolution power UNICAM-UV spectrophotometer.…”

Section: Analytical Proceduresmentioning

confidence: 99%

Selective Precipitation of Yttrium From Monazite Acid Leach Liquor by Using Carbonates Precipitation Method.

Elawady

Abd-Elfatah

Abdelwahab

et al. 2019

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)

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Rare earth elements (REE) solubility with carbonate salts vary greatly from element to element. The heavy rare earth elements (HRE) being more soluble than the light rare earth elements. Their solubility is a function of the carbonate concentration and the kind of carbonate as sodium, potassium and ammonium. In this work, it is explored the ability of the carbonate for the precipitation of the REE and an easy separation of yttrium was achieved using sodium carbonate to form complex yttrium carbonate followed by oxalic acid precipitation. Form this work REEs concentrate containing (%) 1.

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Section: Analytical Proceduresmentioning

confidence: 99%

Selective Precipitation of Yttrium From Monazite Acid Leach Liquor by Using Carbonates Precipitation Method.

Elawady

Abd-Elfatah

Abdelwahab

et al. 2019

The Bulletin Tabbin Institute for Metallurgical Studies (TIMS)

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“…Thirteen azo dyes have been prepared from chromotropic acid and various amines in this laboratory and their analytical properties investigated. Most of these dyes, proved to be effective color-forming reagents for thorium (3,7,8), and some were effective for zirconium also. Some may also be used as indicators for thorium in the chelatometric and fluoride titrations of this metal.…”

Section: Many Azo Dyesmentioning

confidence: 99%

Spectrophotometric Determination of Thorium with 2 - (4 - Carboxy - 3 - hydroxyphenylazo) - 1,8-dihydroxynaphthalene-3,6-disulfonic Acid

Datta¹

1958

Anal. Chem.

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Raman and surface‐enhanced Raman spectroscopic studies of sulphanilic acid azochromotrope (SPADNS)

Siu

Chen

1993

J Raman Spectroscopy

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The trisodium salt of 2-(4-sulphophenylazo)l,8-dihydroxynaphthalene-3,6disulphonic acid (SPADNS) was studied by Raman and surfaceenhanced Raman spectroscopy (SERS) techniques. The Raman spectra of SPADNS powder and aqueous solution were investigated and an assignment of the Raman bands was made taking into account its infrared absorption spectrum. SPADNS tautomers, o-bydroxyazo and oquinone hydrazone, are also discussed Although the assigameot is still preliminary owiog to the complex structure of the SPADNS molecule, it provides useful information for SERS investigations of SPADNS in aqueous silver sol and on silver film. "he results of SERS are compared with those of visible absorption spectra aod x-ray photoelectron spectra (XPS) aod the adsorp tioo configuration of the SPADNS molecule on a silver surface is considered.

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Rapid titrimetric determination of thorium with fluoride using SPADNS

Cited by 24 publications

References 9 publications

Selective Precipitation of Yttrium From Monazite Acid Leach Liquor by Using Carbonates Precipitation Method.

Selective Precipitation of Yttrium From Monazite Acid Leach Liquor by Using Carbonates Precipitation Method.

Spectrophotometric Determination of Thorium with 2 - (4 - Carboxy - 3 - hydroxyphenylazo) - 1,8-dihydroxynaphthalene-3,6-disulfonic Acid

Raman and surface‐enhanced Raman spectroscopic studies of sulphanilic acid azochromotrope (SPADNS)

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