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  • Biochemistry and Biotechnology  (1)
  • atomic spectrometry  (1)
  • 1
    Electronic Resource
    Electronic Resource
    Advanced ceramics and their basic products: A challenge to the analytical sciences (1990)
    Springer
    Microchimica acta 101 (1990), S. 173-188 
    Details
    ISSN: 1436-5073
    Keywords: ceramics ; atomic spectrometry ; inorganic analysis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The analytical characterization required in the development and in the quality control of new ceramics is discussed. For the basic substances, the problems encountered in the development of routine techniques for a direct and reliable analysis of Al2O3, AlN, Si3N4, SiC, and ZrO2 powders are reported. Among the atomic spectrometric methods, especially slurry atomization ICP-spectrometry is described. Also the problems encountered in the development of combined procedures as required for the characterization of reference samples are presented. Methods for the direct bulk analysis of ceramics and microdistributional analysis, as they are now under development with laser-based techniques and various probe techniques, are described as well.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01244170
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  • 2
    Electronic Resource
    Electronic Resource
    Detection of platinum species in plant material (1995)
    Weinheim : Wiley-Blackwell
    Electrophoresis 16 (1995), S. 800-803 
    Details
    ISSN: 0173-0835
    Keywords: Gel permeation chromatography ; Isotachophoresis ; Plant materials ; Species analysis ; Platinum ; Chemistry ; Biochemistry and Biotechnology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology , Chemistry and Pharmacology
    Notes: Model experiments for the detection of platinum species in extracts from native and platinum-treated grass cultivations are described. The procedural steps are cultivation of the grass samples, extraction and concentration of the platinum species by ultrafiltration and freeze-drying, preparative separation of the species by gel chromatography followed by isotachophoresis, and sequential analytical detection of the separated platinum species by adsorptive voltammetry. After isotachophoresis, sharp peaks of platinum species could be detected. In the native grass extract only one platinum species (160-200 kDa) was found. In the platinum-treated grass extracts several platinum species were observed in the molecular mass range from 1 to 〉 1000 kDa. By an extremely sensitive platinum determination method (adsorptive voltammetry; detection limit, 2 pg Pt abs.) it was possible to detect platinum even in stained protein bands from horizontal gel electrophoresis of platinum containing fractions obtained after isotachophoresis.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/elps.11501601131
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