A new principle of activation analysis separations-II☆Substo chiometric determination of traces of zinc and copper in germanium dioxide

Zeman, Adolf; Růžička, Jaromír; Starý, J.

doi:10.1016/0039-9140(63)80086-7

Cited by 27 publications

(5 citation statements)

References 3 publications

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“…The amount of organic reagent used must be less than that corresponding to the stoichiometric ratio. The method has been used for rapid separations in activation analysis (697,792,943,944)• Similar approaches for determining mercury in plant materials (803) and cobalt in alloys (679) have been suggested by others. As an aid to increased selectivity and specificity in extractions, the theory of masking agents has been treated by Hulanicki (316).…”

Section: Apparatus and Techniquesmentioning

confidence: 94%

Extraction

Morrison¹,

Freiser²

1964

Anal. Chem.

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Section: Apparatus and Techniquesmentioning

confidence: 94%

Extraction

Morrison¹,

Freiser²

1964

Anal. Chem.

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“…S -2 (35) and, since the amounts of the element extracted are the same, (36) Hence w can be determined without regard to the yield by the following procedure: the solution of the irradiated sample is divided into two equal parts, to one of which a known weight of carrier (x) is added; then exactly the same amount of the radiochemically pure isotope is isolated from each part, and a t and a^ are measured. The weight, w, can then be calculated from Equation 36.…”

Section: Downloaded By [Columbia University] At 07:53 27 November 2014mentioning

confidence: 99%

“…Zinc as a trace element in germanium dioxide was determined by neutron-activation analysis 36 using selective extraction with a substoichiometric amount of dithizone in carbon tetrachloride in the presence of diethanolaminedithiocarbamate as a masking agent. The same principle has been applied in the determination of zinc in pure water 73 and other materials 74 ' 75 by isotope dilution.…”

Section: Downloaded By [Columbia University] At 07:53 27 November 2014mentioning

confidence: 99%

Principles and Applications of Substoichiometric Techniques of Analysis

Baishya¹,

Heslop²,

DeVoe³

1971

C R C Critical Reviews in Analytical Chemistry

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“…In most cases indium is present in such trace amounts that very sensitive methods often involving a preconcentration step are necessary for its determination. Indium has been determined by neutron activation analysis [2] using a substoichiometric amount of EDTA wherein a preliminary extraction of indium with dithizone ensures good selectivity. Traces of indium in zinc ore has been determined by neutron activation analysis.…”

Section: Introductionmentioning

confidence: 99%

Substoichiometric Isotope Dilution Analysis of Indium by Liquid Scintillation Counting

1993

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Indium / Aliquat-336 / Liquid scintillation counting / Ferric hydroxide collection SummaryA sensitive and selective substoichiometric isotope dilution method for the determination of trace amounts of indium is described. The method is based on the extraction of its ionassociation complex with substoichiometric amount of Aliquat-336 into toluene from 0.7 Μ KBr and 4.0 Μ H 2 S0 4 . The beta activity of indium-114 is measured by liquid scintillation counting. The counting efficiency was found to be 92%. The ease with which indium can be quantitatively collected over ferric hydroxide is put to advantage in developing the above method. The collection method in conjunction with the substoichiometric method is used to determine indium in the flue dust and zinc ore. The detection limit was found to be 0.5 μg in 100 ml of aqueous volume.

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A new principle of activation analysis separations-II☆Substo chiometric determination of traces of zinc and copper in germanium dioxide

Cited by 27 publications

References 3 publications

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Principles and Applications of Substoichiometric Techniques of Analysis

Substoichiometric Isotope Dilution Analysis of Indium by Liquid Scintillation Counting

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