Solvent Extraction of Chromium with Acetylacetone

McKaveney, J. P.; Freiser, Henry

doi:10.1021/ac60144a024

Cited by 38 publications

(5 citation statements)

References 14 publications

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“…If it is necessary to isolate chromium further after extracting it as the chromium III-2,4-pentanedione complex into chloroform, the chloroform phase may be washed with 3 N sulfuric or 3 N hydrochloric acid (McKaveney and Preiser, 1958). Ninety-nine percent of the chromium remained in the organic phase after three hydrochloric acid washings.…”

Section: Interferencesmentioning

confidence: 99%

Determination of chromium in plants and other biological materials

Cary¹,

Allaway²

1971

J. Agric. Food Chem.

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Section: Interferencesmentioning

confidence: 99%

Determination of chromium in plants and other biological materials

Cary¹,

Allaway²

1971

J. Agric. Food Chem.

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“…Further extraction studies in this laboratory using 2-thenoyltrifluoroacetone (TTA) (1-5) have been applied to ehromium(III). TTMrk by McKavanev and Freiser (6) showed that chromium(III) does not readily form a complex with acetylacetone. The solution containing chromium must be adjusted to pH 7.0 and heated under reflux with acetylacetone for 30 minutes before the complex can be measured in the organic layer speetrophotometrically at 560 µ.…”

Section: Extraction Of Chromium(lll) With 2-thenoyltrifluoroacetonementioning

confidence: 99%

Extraction of Chromium(III) with 2-Thenoyltrifluoroacetone. Direct Spectrophotometric Determination in the Organic Phase

Majumdar¹,

De²

1960

Anal. Chem.

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“…EDTA will mask the extraction of copper, bismuth, and lead but will not affect that of uranium. Vanadium (29) and chromium (30) can be-extracted with acetyl acetone. Recent work with TTA includes the highly selective extraction of zir conium from concentrated nitric acid solutions (31), the extraction of nep tunium (32) , plutonium (33), cerium (34), and protactinium (35) from strong mineral acid media.…”

Section: Chelate Systemsmentioning

confidence: 99%

“…Tracer-level Cew is selectively extracted away from other lanthanides by 0. 30 Carboxylic acids.-Solutions of carboxylic acids in organic solvents have been found to be effective in extracting several metals ou t of alkaline aqueous solutions, and those elements that have been shown to extract under a variety of conditions are given in Figure 8.…”

Section: Ion Association Systemsmentioning

confidence: 99%

Solvent Extraction in Radiochemical Separations

Freiser¹,

Morrison²

1959

Annu. Rev. Nucl. Sci.

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The last several years have seen a reawakening appreciation of the value of solvent extraction separations processes both on analytical and process scales. Separations by solvent extraction are simple, convenient, clean, and applicable equally well to carrier-free tracer and macro amounts of materials. They usually require apparatus as uncomplicated as a separatory funnel and may readily be adapted to remote handling procedures.A variety of separations techniques have been applied to the problems of isolation and radiochemical purification of nuclides. General descriptions and recent surveys of radiochemical separations can be found in references (1) through (5). Although all of the separation methods mentioned are of great importance to the radiochemist, solvent extraction is particularly well suited to the purification of many radioisotopes since, after several extractions of a substance, the final product is usually relatively free from extraneous im purities which may be present when other separation procedures are em ployed. Also, if the isotope of interest has a short half life, a rapid separation is essential and extraction procedures have proved invaluable. Most of the extractions employed in radiochemistry are based on previously developed conventional analytical extractions, and the recent book by the authors (6) offers a comprehensive treatment of the subject of extraction as applied to inorganic analysis. In addition to covering the principles and practical as pects of the technique, procedures for the extraction of the elements are presented. The review by the authors (7) in Analytical Chemistry surveys the latest developments in the field. CLASSIFICATION OF SOLVENT EXTRACTION SYSTEMSMost metal salts are strong electrolytes that are relatively insoluble in organic solvents and soluble in water because of its ability to solvate the ions as well as because of its high dielectric constant. Since it is usually necessary to transform the hydrated metal ion into an uncharged complex in order to extract it into an organic solvent, it is convenient to classify metal extraction systems on the basis of the nature of the extractable metal 1 The survey of literature pertaining to this review was completed in December, 1958.2 Among the abbreviations used in this chapter are: EDTA (ethylenediamine tetraacetic acid); HDGP (dioctylphenyl orthophosphoric acid); TBP (tributyl phos phate); TTA (thenoyltrifluoracetone).

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Solvent Extraction of Chromium with Acetylacetone

Cited by 38 publications

References 14 publications

Determination of chromium in plants and other biological materials

Determination of chromium in plants and other biological materials

Extraction of Chromium(III) with 2-Thenoyltrifluoroacetone. Direct Spectrophotometric Determination in the Organic Phase

Solvent Extraction in Radiochemical Separations

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