Neutronenaktivierungsanalytische Bestimmung einiger Spurenelemente in meteoritischen Phasen

Hermann, F.; Kiesl, W.; Kluger, F.; Hecht, F.

doi:10.1007/bf01219619

Cited by 23 publications

(6 citation statements)

References 23 publications

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“…Position 15 was irradiated with standards for 5 days in the ASTRA reactor for the determination of Se, As, Sb, Sn, Re, Hg, Au, Mo, Os, Ru, Cr, Sc, Cs, Rb, Zn, In, and Ir. After a cooling period of 1 day the elements were separated by distillation and ion exchange steps according to an analytical separation scheme that has been developed at the Analytical Institute of the University of Vienna (Hermann et al, 1971). The radiochemical determinations of the nuclides were carried out by using a 40 cm 3 Ge(Li) detector and a 400-channel 7-spectrometer (Intertechnique Company Selecteur Sa-40).…”

Section: Constituentmentioning

confidence: 99%

Allende Meteorite Reference Sample

Jarosewich¹,

Clarke²,

Barrows³

1987

Smithsonian Contributions to the Earth Sciences

163

126

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the elements determined, in spite of substantial variations between bulk Allende and that meteorite's spheroidal Ca-Al-rich inclusions (Chou et al., 1976). ACKNOWLEDGMENTS.-We are indebted to R. Bild, R. Glimp, J. Kimberlin, K. Robinson, and L. Sundberg for assistance. Neutron irradiations at the UCLA and Ames Laboratories reactors were handled by J. Brower and A.F. Voight and their associates. This work was supported by NSF Grant GA 32084. 1450±40 c , 1400 e , 1300 f , l700 g 3370±100 c , 3300±100 d , 3300', 3000 f 200 e , 250 f , 1800±1200 g 130±22 c , 70 e , l70 f 3680±100 c , 3900±100 d , 3600 e , 4200 f , 4200 g 640±20 c , 650±40 d , 600 e , 700 f , 600 g 11.0±0.5 c , 12.2±0.2 d , ll e , 10 g 0.027±0.001 c 0.19±0.01 c 3.0±0.1 c , 2 e 0.44±0.02 c , 0.7 e 1.25±0.06 c , l e 0.20±0.01 c , 0.2 e 0.91±0.05 c , 0.9 e 0.29±0.01 c , 0.5 e 0.107±0.005 c ,0.1 e 0.43±0.02 c , 0.6 e 0.074±0.005 c , 0.09 e 0.42±0.02 c , 0.6 e 0.12±0.1 c ,0.1 e 0.31±0.02 c , 0.3 e 0.049±0.001 c 0.32±0.02 c , 0.4 e 0.058±0.002 c * The In value determined for 10-2 is 0.02±0.01; the large error limit is imposed due to an analyzer malfunction during counting. b The Cd value for 12-2 could not be determined because of a laboratory accident during the chemical processing.

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Section: Constituentmentioning

confidence: 99%

Allende Meteorite Reference Sample

Jarosewich¹,

Clarke²,

Barrows³

1987

Smithsonian Contributions to the Earth Sciences

163

126

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“…Co. and Ir: it actually is observed even for the two rhabdite modifications from Lombard. It is gratifying to see that in these plots the results of Hermann et al [5] fall into line: from the position of their data points on these curves it would appear that the schreibersite they analyzed was very coarse grained.…”

Section: Resultsmentioning

confidence: 64%

“…multielement analyses of phosphides are scarce. The only such study appears to have been that of Hermann et al [5] who have investigated the distribution of some trace elements between schreibersite and metal of the octahedrites Canyon Diablo and Odessa.…”

Section: Introductionmentioning

confidence: 99%

On the Distribution of Major and Trace Elements Between Metal and Phosphide Phases of Some Iron Meteorites

Jochum

Seufert

Begemann

1980

Zeitschrift Für Naturforschung A

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The concentrations of Fe, Ni, Co, P, Cu, Ga, Ge, Mo, Ru, Rh, Pd, W, Ir and Pt in the phosphides and the metal of the coarse octahedrites Campo del Cielo, Canyon Diablo, Cranbourne and Sardis, the coarsest octahedrite Säo Juliäo de Moreira and the hexahedrites Braunau and Lombard have been determined by spark source mass spectrometry. Striking differences are observed of the element contents between bulk meteorite and the phosphides as well as between the different phosphide modifications schreibersite and rhabdite. Extreme values are a 20 fold depletion of Ga and a 40 times higher content of Pd in the phosphides. A particularly strong correlation between the noble metal element content and size of phosphide aggregates is observed; it is shown that this correlation is not an artifact of the sample preparation but that is must be real.

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“…The Cr was extracted prior to -counting. Other applications included the analysis of rocks and minerals (129, 441, 448, 590) and the nondestructive analysis of meteorites (253,482,738).…”

Section: Niobium and Tantalummentioning

confidence: 99%

“…Biological materials (44.3) Rocks and ores (129,210,259,441,448,590,760) Meteorites (253,482,738) 60Co ( 247) Paper (586) Meteorites (253) Petroleum (242) Rocks and ores (643) Semiconductors ( 791) Graphite (379) Extraction procedure (460) Cloth (368) Rocks and ores (85,230,312,469,549,584) Al ( 32) Steel (173, 449) Meteorites (449) Biol, material (449) Semiconductors (25) Study of conditions (43,427) Zr alloys (505, 644) Mo (178) Air pollutants (404) General methods (274) Graphite (379) Water (403) A number of electrometric methods and reagents have been used for the determination of Mo. A kinetic biamperometric determination is based on the catalytic oxidation reaction of KI with H2O2 (603).…”

Section: Molybdenummentioning

confidence: 99%