Liquid—liquid extraction and determination of uranium(IV) with 2,6-diacetylpyridine bis(benzoylhydrazone)

Casoli, Antonella; Mangia, Alessandro; Mori, Giovanni; Predieri, Giovanni

doi:10.1016/s0003-2670(00)81798-5

Cited by 9 publications

(5 citation statements)

References 18 publications

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“…All products were characterized by direct chemical ionization mass spectrometry (Delsi-Nermag, R3010, Choisy Le Roi, France) and UV/visible spectrometry. The UV/visible spectra of H 2 terBuDIB, UO 2 terBuDIB, and CuterBuDIB, are similar to those of H 2 DIB, UO 2 DIB, and CuDIB, respectively …”

Section: Methodsmentioning

confidence: 65%

“…Because ionic compounds cannot be dissolved in supercritical carbon dioxide, it is necessary to complex the metal cations with an organic chelating agent prior to the injection in the SFC system. 2,6-diacetylpyridine bis(benzoylhydrazone) − (H 2 DIB), shown in Figure , has been chosen here. The chromatographic properties of the uranyl complex UO 2 DIB are studied on various alkyl stationary phases.…”

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confidence: 99%

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Packed-Column Supercritical Fluid Chromatography: Quantitative Determination of Uranium without Liquid Waste Generation

1997

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A new procedure for the determination of uranium by packed-column supercritical fluid chromatography is proposed. A nonfluorinated chelating agent selective for copper and uranium, the 2,6-diacetylpyridine bis(benzoylhydrazone), has been chosen. We have studied its chromatographic properties on different stationary phases and the influence of the methanol content in the carbon dioxide mobile phase. The separation of the metal compounds was conducted with and without solvent injection. A calibration curve was obtained for uranium in the range of 52-323 ng injected. The accuracy of the method is 0.5%, the repeatability 4%. The same studies were performed with a new compound, diacetyl-2,6 pyridine bis(4-tert-butyl benzoylhydrazone). An increase in retention and efficiency was then observed.

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Section: Methodsmentioning

confidence: 65%

mentioning

confidence: 99%

Packed-Column Supercritical Fluid Chromatography: Quantitative Determination of Uranium without Liquid Waste Generation

1997

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“…For such matrices, after evaporation, the high salt content has to be removed or the analyte must be selectively extracted from the water sample by either coprecipitation, solvent extraction or ion exchange. The liquid-liquid based extraction technique for selective separation of uranium from aqueous matrix has been widely used in combination with other analytical techniques like ICP-OES, 36,37 spectrophotometry 38 and ICP-MS 39 for the determination of uranium. However, using TXRF there are very limited literature reports.…”

Section: Evaporation Followed By Dispersive Liquid-liquid Extractionmentioning

confidence: 99%

Recent advances in ultra‐trace determination of uranium in natural water using total reflection X‐ray fluorescence (TXRF) spectrometry

Sanyal

Dhara

2023

X-Ray Spectrometry

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This review article describes some of the recent advances in ultra‐trace determination of uranium in various natural water bodies such as drinking water, underground water, seawater, etc. using total reflection x‐ray florescence (TXRF) spectrometry. Uranium is one of the most hazardous element having chemical as well as radio‐toxicity. However, due to its low concentration in water samples, direct determination is seldom possible in samples with high salt content. Various sample preconcentration and selective extraction techniques for uranium such as solvent extraction, dispersive liquid–liquid micro extraction, solid phase extraction, and membrane based preconcentration methods are summarized in this article. TXRF is a very versatile micro‐analytical technique with detection limits in picogram range and having multielemental analysis capability. TXRF determination of uranium using U Lα as the analytical line has many analytical challenges and difficulties, mainly due to the severe interference with Rb and Br, both are commonly available in natural water samples. This article highlights some of these challenges, along with the advantages and disadvantages of the different sample preparation techniques used so far for uranium determination in natural water samples by TXRF.

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“…Liquid-liquid extraction of uranium has attracted considerable attention [8][9][10]. However these classical extraction methods are usually time-consuming and labor-intensive and require large volumes of high-purity solvents.…”

Section: Introductionmentioning

confidence: 99%

Sodium dodecyl sulfate coated alumina modified with a new Schiff's base as a uranyl ion selective adsorbent

Tashkhourian

Abdoluosofi

Pakniat

et al. 2011

Journal of Hazardous Materials

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Liquid—liquid extraction and determination of uranium(IV) with 2,6-diacetylpyridine bis(benzoylhydrazone)

Cited by 9 publications

References 18 publications

Packed-Column Supercritical Fluid Chromatography: Quantitative Determination of Uranium without Liquid Waste Generation

Packed-Column Supercritical Fluid Chromatography: Quantitative Determination of Uranium without Liquid Waste Generation

Recent advances in ultra‐trace determination of uranium in natural water using total reflection X‐ray fluorescence (TXRF) spectrometry

Sodium dodecyl sulfate coated alumina modified with a new Schiff's base as a uranyl ion selective adsorbent

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