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  • 1
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    Rare earths and minor elements chemical composition of internal layers of VA 13/2 (sample 237 KD) ferromanganese crusts (2022)
    PANGAEA
    Details
    Publication Date: 2023-08-28
    Description: On the basis of the macroscopically visible layers, chemical analyses were carried out on various ferromanganese crust samples from VA 13/2 (station 237 KD) for minor elements and Rare Earths by neutron activation.
    Keywords: Antimony; Arsenic; Bromine; Cerium; Deposit type; DEPTH, sediment/rock; DISTANCE; Dredge; DRG; Europium; Geochemistry; Hafnium; ICP-MS; Identification; Inductively coupled plasma mass spectrometry; Lanthanum; Lutetium; manganese micronodule; manganese nodule; Neodymium; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; Pacific Ocean; Samarium; Scandium; sediment; Terbium; Thorium; Tungsten; VA-13/2; VA13-2-237KD; Valdivia (1961); Ytterbium
    Type: Dataset
    Format: text/tab-separated-values, 339 data points
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  • 2
    facet.materialart.
    Unknown
    Major elements chemical composition of internal layers of VA 13/2 (station 237 KD) ferromanganese crusts (2022)
    PANGAEA
    Details
    Publication Date: 2023-08-28
    Description: On the basis of the macroscopically visible layers, chemical analyses were carried out on various ferromanganese crust samples from VA 13/2 (sample 237 KD) for Mn, Fe, Ni, Cu, Co, Pb, Zn, Al, Ca and Ba by atomic absorption spectroscopy (AAS) at the exception of SiO2 by Gravimetric method.
    Keywords: Aluminium; Atomic absorption spectrometry (AAS); Calcium; Cobalt; Copper; Deposit type; DEPTH, sediment/rock; DISTANCE; Dredge; DRG; Elevation of event; Event label; Geochemistry; Identification; Iron; Latitude of event; Lead; Longitude of event; Magnesium; Manganese; manganese micronodule; manganese nodule; Nickel; NOAA and MMS Marine Minerals Geochemical Database; NOAA-MMS; ocean; Pacific Ocean; sediment; Silicon dioxide; Sodium; VA-13/2; VA13-2-237KD; Valdivia (1961); Wet chemistry; Zinc
    Type: Dataset
    Format: text/tab-separated-values, 340 data points
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  • 3
    Electronic Resource
    Electronic Resource
    U, As and W in USGS Manganese Nodule Standards Nod-A-1 and Nod-P-1 (1984)
    Oxford, UK : Blackwell Publishing Ltd
    Geostandards and geoanalytical research 8 (1984), S. 0 
    Details
    ISSN: 1751-908X
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Geosciences
    Notes: New analytical data on three elements are presented for the two USGS manganese nodule reference materials, Nod-A-1 and Nod-P-1. Arsenic and tungsten were determined by instrumental neutron activation analysis, and uranium by delayed-néutron counting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1751-908X.1984.tb00424.x
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  • 4
    Electronic Resource
    Electronic Resource
    The composition of kamacite in iron meteorites investigated by accelerator mass spectroscopy, neutron activation analysis and analytical electron microscopy
    Amsterdam : Elsevier
    Nuclear Inst. and Methods in Physics Research, B 36 (1989), S. 43-52 
    Details
    ISSN: 0168-583X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0168-583X(89)90058-X
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  • 5
    Electronic Resource
    Electronic Resource
    Progress in Activation Analysis at the Atomic Institute Vienna (2000)
    Springer
    Journal of radioanalytical and nuclear chemistry 244 (2000), S. 333-338 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Fields in which progress has been achieved at the Atomic Institute Vienna are discussed briefly. The use of short and medium lived nuclides for activation analysis (AA). Construction of out-core parts of a fast transfer system. Combined sample catcher sample-changer for AA allowing cyclic and pseudocyclic AA. A system for discontinuous or continuous irradiation of liquid samples. Counting with an anticompton shield and quantitative correction of random coincidences. Screening analyses with the fast irradiation and measurement system. Improved peak-evaluation of gamma-spectra. Epithermal AA by a neutron converter. Following short-lived nuclide measurement, automatic sample transfer into a well-type detector enabling sensitive counting of nuclides with short half-lives. Use of large samples to increase the detection limits of ng to pg at activation with moderate neutron flux. Flux determination by liquid scintillation counting.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006767105543
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  • 6
    Electronic Resource
    Electronic Resource
    Activation Analysis of Large Samples (2000)
    Springer
    Journal of radioanalytical and nuclear chemistry 244 (2000), S. 523-529 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The usual mass of samples for activation analysis is in the range of several milligrams to several hundred milligrams. An improvement of the detection limit by three orders of magnitude is attainable by use of a larger sample size. Limitations of the method due to thermal effects, neutron self-shielding and gamma-ray attenuation during activation and measuring of large organic samples are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006778814030
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  • 7
    Electronic Resource
    Electronic Resource
    Instrumental neutron activation analysis of samples with masses from micrograms to hectograms (1993)
    Springer
    Journal of radioanalytical and nuclear chemistry 167 (1993), S. 161-168 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The rotating rig at the Danish DR-3 reactor was used for irradiation of samples with masses from a hundred micrograms to several hundred grams. The pneumatic post for uranium delayed neutron counting was used for automatic sequential irradiation of samples subdivided into up to 24 aliquots, each with a volume of 7 cm3. The cumulative samples were measured in polyethylene irradiation containers in a specially designed radial holder.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02035476
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  • 8
    Electronic Resource
    Electronic Resource
    Fluorine analysis of standard materials by short-time activation analysis using20F (1993)
    Springer
    Journal of radioanalytical and nuclear chemistry 169 (1993), S. 57-63 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract Fluorine has been analyzed in the “Fast Irradiation and Measurement System” FIMS in the TRIGA Mark II reactor. The samples with weight ranging from 100 to 500 mg were irradiated and measured in 11 or 22 s periods. The applicability of the proposed method for widely different sample types is discussed. Results are divided into three main groups with regard to the sample type. The first group comprehends low level alumina, plants and other biological materials of organic origin, the second covers the medium level alumina sediments, sewage and soils, and the third the rocks with high alumina contents, and minerals.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02046783
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  • 9
    Electronic Resource
    Electronic Resource
    High-Flux Irradiation of Open Samples (2000)
    Springer
    Journal of radioanalytical and nuclear chemistry 244 (2000), S. 349-354 
    Details
    ISSN: 1588-2780
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Energy, Environment Protection, Nuclear Power Engineering
    Notes: Abstract The irradiation of large samples of biological material in a high neutron flux enables the extention of trace element analysis into the ng to pg range, but raises several problems as gamma heating and radiolysis degrade the samples. Gamma heating increases the pressure to a point where either a very large irradiation container is necessary or a container which can endure the high pressure. Several methods to overcome these problems have been published. The irradiation of open samples was performed as an alternative to these methods. Temperature effects on biological material during irradiation in a high and in a low neutron flux were compared. As an example, wheat was irradiated in open containers allowing simultaneous temperature measurement in the sample during irradiation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006779424198
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  • 10
    Electronic Resource
    Electronic Resource
    A critical survey of mixing, dilution and addition methods and addition methods and possible extensions of the theory. Part I (1974)
    New York, NY [u.a.] : Wiley-Blackwell
    X-Ray Spectrometry 3 (1974), S. 2-14 
    Details
    ISSN: 0049-8246
    Keywords: Chemistry ; Analytical Chemistry and Spectroscopy
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Physics
    Notes: The commonly used equation relating the intensity of characteristic X-radiation to the concentration of the element to be determined contains three unknowns. By chanfing the concentration of this element in two additionally prepared samples further data are obained permitting the derivation of two more equations. Solution of these three equations by algebraic or graphical methods yields the concentration of the elemen. Formulae have been derived desribing ten experimental variants of this principle. Three of these formulae are similar to those described by sherman and Tertian. The other two describe the semi-emipirical methods of addition, and mixing-dilution developed by Jones.The experimental data for eleven elements involving ten kα lines, two Kβ lines and one Lα line were obtained using two X-ray units. The samples were investigated in the form cf liquid, powder pellet, glass disc and powdered glass disc. Only the three most general formulae have used in the calculations. Results show absolute percentage deviations within 1 to 3%.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/xrs.1300030103
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