Fast On-line Solvent Extraction with the SISAK-3 Centrifuge System as a Test of Chemical Studies of the Elements 105 and 106

Wierczinski, B.; Alstad, J.; Eberhardt, Κ.; Eichler, Β.; Gäggeler, Η. W.; Herrmann, G.; Jost, D.T.; Nähler, A.; Pense-Maskow, M.; Reddy, Α. V. R.; Skarnemark, Gunnar; Trautmann, Ν.; Türler, Andreas

doi:10.1524/ract.1995.69.2.77

Cited by 21 publications

(4 citation statements)

References 9 publications

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“…The extractant was 0.046 M trioctylamine (TOA) dissolved in toluene, which contains dimethyl-POPOP and naphthaline as scintillator. The group 4 homologs of Rf remain in the aqueous phase [150].…”

Section: J V Kratzmentioning

confidence: 99%

Critical evaluation of the chemical properties of the transactinide elements (IUPAC Technical Report)

Kratz¹

2003

Pure and Applied Chemistry

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Names of countries given after Members' names are in accordance with the IUPAC Handbook 1998Handbook -1999. Republication Abstract: In this paper, the chemical properties of the transactinide elements rutherfordium, Rf (element 104); dubnium, Db (element 105); and seaborgium, Sg (element 106) are critically reviewed. The experimental methods for performing rapid chemical separations on a time scale of seconds are reviewed, and comments are given on the special situation with the transactinides for which the chemistry has to be studied with single atoms. There follows a systematic description of theoretical predictions and experimental results on the chemistry of Rf, Db, and Sg-their mutual comparison and evaluation. The literature cited has the cutoff date of March 1999. The more recent chemical identification of bohrium, Bh (element 107), and of hassium, Hs (element 108), should be evaluated in a future Part II of this report.

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Section: J V Kratzmentioning

confidence: 99%

Critical evaluation of the chemical properties of the transactinide elements (IUPAC Technical Report)

Kratz¹

2003

Pure and Applied Chemistry

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“…All experiments aimed at the detection of correlated decay chains from 265 Sg and 266 Sg to obtain an unequivocal signal from element 106. Gas-chromatographic separations were performed with the On-Line Gas Chemistry Apparatus, OLGA III, [24,25], and the centrifuge system Brought to you by | New York University Bobst Library Technical Services Authenticated Download Date | 6/12/15 2:41 PM SISAK III [26,27] was used for continuous extractions from an aqueous solution into an organic phase. First results from OLGA III were briefly summarized in [20], while a detailed description of the OLGA III and the SISAK experiments will be reported elsewhere.…”

Section: The Nuclear Aspectmentioning

confidence: 99%

First Aqueous Chemistry with Seaborgium (Element 106)

et al. 1997

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For the first time, chemical separations of element 106 (Seaborgium, Sg) were performed in aqueous solutions. The isotopes 265 Sg and 266 Sg were produced in the 248 Cm + 22 Ne reaction at a beam energy of 121 MeV. The reaction products were continuously transported by a He(KCl)-jet to the computer-controlled liquid chromatography system ARCA. In 0.1 M HNO3/5 X ΙΟ -4 M HF, Sg was found to be eluted within 10 s from 1.6X8 mm cation-exchange columns (Aminex A6, 17.5±2 μπι) together with the hexavalent Mo-and W-ions, while hexavalent U-ions and tetravalent Zr-, Hf-, and element 104 ions were strongly retained on the column. Element 106 was detected by measuring correlated α-decays of the daughter isotopes 78-s 261 104 and 26-s 257 102. For the isotope 266 Sg, we have evidence for a spontaneous fission branch. It yields a partial spontaneousfission half-life which is in agreement with recent theoretical predictions. The chemical results show that the most stable oxidation state of Sg in aqueous solution is +6, and that like its homologs Mo and W, Sg forms neutral or anionic oxo-or oxohalide-compounds under the present condition. In these first experiments, Sg exhibits properties very characteristic of group 6 elements, and does not show U-like properties.

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“…The extractant was 0.046 M trioctylamine (TOA) dissolved in toluene which contains dimethyl-POPOP and naphtaline as scintillator. The group-4 homologs of Rf remain in the aqueous phase (148].…”

Section: The High Temperatures Visible Inmentioning

confidence: 99%

Chemical Properties of the Transactinide Elements

Kratz¹

1999

Heavy Elements and Related New Phenomena

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Fast On-line Solvent Extraction with the SISAK-3 Centrifuge System as a Test of Chemical Studies of the Elements 105 and 106

Cited by 21 publications

References 9 publications

Critical evaluation of the chemical properties of the transactinide elements (IUPAC Technical Report)

Critical evaluation of the chemical properties of the transactinide elements (IUPAC Technical Report)

First Aqueous Chemistry with Seaborgium (Element 106)

Chemical Properties of the Transactinide Elements

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