A selective procedure for the gravimetric estimation of uranium as oxinate using complexone as masking agent

Sarma, Rajdeep; Mallik, Abhijit

doi:10.1016/s0003-2670(00)87847-2

Cited by 15 publications

(1 citation statement)

References 3 publications

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“…In weakly acid solution, ethylenediaminetetraacetic acid forms a strong mole-to-mole complex with zirconium [ 11 ] and a weaker one with titanium [ 12 ]. Sen Sarma and Mallik [ 13 ] state that the zirconium complex is strong enough to prevent the precipitation of zirconium by 8-hydroxyquinoline in weakly acid solution. Experiments in our laboratory showed that titanium could be almost completely precipitated as titanyl quinolate, TiO-(C 9 H 6 NO) 2 ·2H 2 O, at p H 4.5 in the presence of ethylenediaminetetraacetic acid, under certain conditions.…”

Section: Development Of the Proceduresmentioning

confidence: 99%

Method for the separation of titanium, zirconium, iron, and aluminum from one another and for their subsequent determination

Murphy¹,

Clabaugh²,

Gilchrist³

1960

J. RES. NATL. BUR. STAN. SECT. A.

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A method is d c~c ribe d for t he se par ation of t itan ium , zi rco nium , iron, and aluminum from on e anothcr a nd for t heir subse qucnt d etermin ation . Iron i s first precipitated with I -ni t roso-2-naphthol after compJex i ng t he t itanium and zi rconium with citrate to pre vent t heir prec ipi tation . Titanium and zirconium are th en co llectivcly prec ipi tated with cupferron and subsequ en t ly se parated from each other by prec ipi tating t he titan ium wi t h 8-hydroxyquinoline after co mplexing the zircon ium wi th ct hylcnecliamin etctraacet i c acid . A luminum a nd zirconium are r ecovcred from their r cs pective so l u t ion s by prec ipi tation with cupfc r ron .Th e accuracy of t he mcthod w as p rovcd b y an alyz in g sy ntheti c so lu tio ns co n taining known amounts of t he foul' c lem ents.

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Section: Development Of the Proceduresmentioning

confidence: 99%

Method for the separation of titanium, zirconium, iron, and aluminum from one another and for their subsequent determination

Murphy¹,

Clabaugh²,

Gilchrist³

1960

J. RES. NATL. BUR. STAN. SECT. A.

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Analytisch‐technische Untersuchungenäthylendiamin‐tetraessigsäure als Maskierungsmittel in der analytischen Chemie

Flaschka

1957

Angewandte Chemie

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The adsorption of cations by ionic phosphorylated polymers

et al. 1959

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A preliminary investigation of the adsorption properties of ionic diallyl phosphate polymers has been conducted. Sodium diallyl phosphate polymer (NaDAP), separates hexavalent uranium (UO22+) quantitatively from alkaline earths (Ca and Sr), ferric and divalent elements of the first transitional period, aluminium and lanthanides dissolved together in a 2% w/v solution of disodium ethylene‐diaminetetra‐acetate. Unlike in quantitative separations of uranium from other cations by anion exchangers, the presence of sulphuric acid and the reduction of ferric to ferrous ion is not essential with NaDAP, and nitrate, chloride or perchlorate anions do not interfere. Elution of the adsorbed uranium is conducted with a solution of sodium carbonate. Separation from thorium and fission product β‐activity (after 96 hours' decay) under similar conditions was 91% and 92% respectively. The adsorption sequence for the resin is Th4+ > Fe3+ > UO22+ > La3+ > Cu2+ > Ca2+ > Na. From analogy with complexes formed with dibutyl phosphate and the high affinity of the resin for polyvalent cations it appears that these are adsorbed through the formation of stable foru‐membered ring complexes with the resin functional groups. An equivalent of acid is liberated for each equivalent of uranyl and ferric ion adsorbed by acid diallyl phosphate polymer (HDAP).

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A selective procedure for the gravimetric estimation of uranium as oxinate using complexone as masking agent

Cited by 15 publications

References 3 publications

Method for the separation of titanium, zirconium, iron, and aluminum from one another and for their subsequent determination

Method for the separation of titanium, zirconium, iron, and aluminum from one another and for their subsequent determination

Analytisch‐technische Untersuchungenäthylendiamin‐tetraessigsäure als Maskierungsmittel in der analytischen Chemie

The adsorption of cations by ionic phosphorylated polymers

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