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  • 1
    Online-Ressource
    Online-Ressource
    San Diego :Elsevier Science & Technology,
    Schlagwort(e): Trace elements in the body. ; Electronic books.
    Materialart: Online-Ressource
    Seiten: 1 online resource (591 pages)
    Ausgabe: 1st ed.
    ISBN: 9780080875637
    Serie: Issn Series ; v.Volume 15
    Sprache: Englisch
    Anmerkung: Front Cover -- Trace Element Analysis in Biological Specimens -- Copyright Page -- Contents -- List of Authors -- Introduction -- Part 1: Basic principles and methods -- Chapter 1. Sampling and sample storage -- Introduction -- Physiological sources of variation -- Kinetic sources of variation -- Variation associated with specimen collection and storage -- Contamination -- Loss of water -- Redistribution of the analyte -- References -- Chapter 2. Sample treatment of human biological materials -- Introduction -- Basic considerations -- Sample treatment of human biological materials -- Suggested procedures for sample treatment of human biological materials -- References -- Chapter 3. Graphite furnace AAS -- Introduction -- The stabilized temperature platform furnace -- Analytical experience -- References -- Chapter 4. Atomic absorption spectrometry . Flame AAS -- References -- Chapter 5. Atomic emission spectrometry -- Introduction -- Methodology -- Parameters and practical experience -- Special remarks on the DCP-plasma source -- Applications of plasma emission spectroscopy: Biomedical and environmental -- Conclusion -- References -- Chapter 6. Voltammetry -- Introduction -- Why voltammetry? -- Stripping analysis -- Pulse polarography -- Automated voltammetric analysis -- Speciation studies -- Sample pretreatment for voltammetric analysis -- Selected applications of voltammetry -- Acknowledgement -- References -- Chapter 7. Neutron activation analysis -- Introduction -- Fundamentals -- Nuclear decay -- Radiochemical versus instrumental procedures -- Counting equipment -- Sensitivity -- Sources of error -- Advantages -- Disadvantages and limitations -- Biomedical applications -- Summary and conclusions -- Acknowledgements -- References -- Chapter 8. Isotope dilution mass spectrometry. , Choice of optimal conditions for isotope dilution by selecting appropriate sample to spike mixing ratios -- Examples of the use of the graphs -- Remarks concerning optimal isotope dilution work -- References -- Chapter 9. The chemical speciation of trace elements in biomedical specimens: Analyti- cal techniques -- Introduction -- Factors that affect the stability of metal-ligand interactions -- Procedures for the study of chemical species -- Combination of analytical techniques -- Conclusion -- References -- Chapter 10. lnterlaboratory and intralaboratory surveys . Reference methods and refer- ence materials -- Introduction -- Potential sources of analytical error -- lnterlaboratory surveys and collaborative studies -- Quality assessment schemes -- Reference methods -- Reference materials -- Concluding remarks -- Acknowledgements -- References -- Chapter 11. Reference materials for trace element analysis -- General principles and definitions -- Suppliers of reference materials -- Preparation of reference materials -- Certification of reference materials -- Selected data for appropriate reference materials -- Conclusions -- References -- Chapter 12. Statistics and data evaluation -- Introduction -- References -- Part 2: Elements -- Chapter 13. Aluminium -- Abstract -- Introduction -- Analytical methods -- Collection and contamination problems -- References -- Chapter 14. Arsenic -- Introduction -- Environmental and toxicological significance -- Biotransformation and excretion in mammals and man -- Human exposure and dose indicators -- Arsenic levels in body fluids and tissues -- Analytical considerations -- Quality assurance -- References -- Chapter 15. Cadmium -- Introduction -- Toxicological and environmental significance -- Human exposure and dose indicators -- Cadmium levels in body fluids -- Analytical considerations -- Quality assurance. , References -- Chapter 16. Chromium -- Introduction -- Toxicological and environmental significance -- Analytical considerations -- Analytical procedures -- Speciation of chromium -- References -- Chapter 17. Copper -- Introduction -- Essentiality and toxicity -- Copper levels in body fluids and tissue -- Analytical considerations -- References -- Chapter 18. Lead -- Introduction -- Determination of lead in whole blood (PbB) -- Determination of lead in teeth (PbT) -- Determination of lead in other biological materials -- References -- Chapter 19. Manganese -- Introduction -- Determination of manganese -- Procedures -- Speciation -- Reference materials -- Conclusions -- References -- Chapter 20. Mercury -- Introduction -- Environmental and toxicological significance -- Analytical considerations -- Analytical procedures -- Automation of analysis -- Acknowledgements -- References -- Chapter 21. Nickel -- Introduction -- Biological and environmental significance -- Analytical considerations -- Analytical methods -- Speciation -- Future prospects -- References -- Chapter 22. Selenium -- Introduction -- References -- Chapter 23. Thallium -- Introduction -- Environmental and toxicological significance -- Biotransformation in animals and man -- Analytical methods for biological specimens -- References -- Chapter 24. Vanadium -- Environmental and toxicological significance -- Analytical introduction -- Analytical procedure -- References -- Chapter 25. Zinc -- Introduction -- Zinc metabolism - an outline -- Disorders of zinc metabolism -- Biochemical and clinical presentation of zinc deficiency -- Occurrence of human deficiency -- Laboratory investigation of zinc metabolism -- Limitation of contamination -- Determination of dietary zinc -- Bioavailability of zinc from diet and the recommended dietary allowance -- Tissue zinc content -- Zinc in hair. , Zinc in peripheral blood -- Plasma/serum zinc - practical considerations -- Interpretation of plasma zinc concentrations -- Pharmacology of zinc therapy -- References -- Subject index.
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  • 2
    Online-Ressource
    Online-Ressource
    New York, NY :Springer,
    Schlagwort(e): Mössbauer spectroscopy-Congresses. ; Electronic books.
    Materialart: Online-Ressource
    Seiten: 1 online resource (381 pages)
    Ausgabe: 1st ed.
    ISBN: 9781461324317
    Sprache: Englisch
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  • 3
    facet.materialart.
    Unbekannt
    Springer
    In:  Marine Geophysical Researches, 20 (3). pp. 239-247.
    Publikationsdatum: 2018-02-08
    Beschreibung: Bottom shots have been used for a number of years in seismic studies on the ocean floor. Most experiments utilized explosives as the energy source, though researchers have recognized the usefulness of collapsing water voids to produce seismoacoustic signals. Implosive sources, however, suffered generally from a lack of control of source depth. We present a new experimental tool, called SEEBOSEIS, to carry out seismic experiments on the seafloor utilizing hollow glass spheres as controlled implosive sources. The source is a 10-inch BENTHOS float with penetrator. Inside the sphere we place a small explosive charge (two detonators) to destabilize the glass wall. The time of detonation is controlled by an external shooting device. Test measurements on the Ninetyeast Ridge, Indian Ocean, show that the implosive sources can be used in seismic refraction experiments to image the subbottom P- wave velocity structure in detail beyond that possible with traditional marine seismic techniques. Additionally, the implosions permit the efficient generation of dispersed Scholte waves, revealing upper crustal S-wave velocities. The frequency band of seismic energy ranges from less than 1 Hz for Scholte modes up to 1000 Hz for diving P-waves. Therefore, broadband recording units with sampling rates 〉2000 Hz are recommended to sample the entire wave field radiated by implosive sources.
    Materialart: Article , PeerReviewed
    Format: text
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  • 4
    facet.materialart.
    Unbekannt
    AGU (American Geophysical Union)
    In:  Eos, Transactions American Geophysical Union, 83 (29). 309; 314-315.
    Publikationsdatum: 2017-02-14
    Materialart: Article , NonPeerReviewed
    Format: text
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  • 5
    Publikationsdatum: 2017-08-04
    Beschreibung: The kinetics of dolomite dissolution have been experimentally investigated under subsurface conditions characteristic of the Rotliegend gas fields in the NE of The Netherlands. Experiments were performed in closed, stirred, batch reactors at far from equilibrium conditions, with dolomite powders of different grain sizes. The experiments were repeated for all grain sizes at 25°C and an experiment was also conducted in deionized water. The rates were derived from the measured concentrations of Mg 2+ or Ca 2+ released from dolomite dissolution and were normalized by the surface area of the minerals at each time interval. Regression of the rates with the pH resulted in the kinetic rate constants of: log k 1 = –8.16 ± 0.06 at 25°C and log k 2 = –7.61 ± 0.05 at 100°C (300 – 350 μm), log k 3 = –7.88 ± 0.20 at 25°C, log k 4 = –7.45 at 100°C (75 – 100 μm), log k 5 = –6.62 ± 0.50 at 25°C and log k 6 = –5.96 ± 1 at 100°C (20 – 25 μm). The results obtained in this study indicate that in an acidic regime the dissolution of dolomite in brine is a factor of 2 faster than in deionized water. It was also shown that the dissolution rates, when normalized by surface area, increase with decreasing grain size.
    Print ISSN: 1354-0793
    Thema: Chemie und Pharmazie , Geologie und Paläontologie
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  • 6
    Digitale Medien
    Digitale Medien
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 104 (1996), S. 7-10 
    ISSN: 1089-7690
    Quelle: AIP Digital Archive
    Thema: Physik , Chemie und Pharmazie
    Notizen: Detailed 57Fe Mossbauer experiments over the range 85〈T〈210 K have been carried out on the tetra-carbonyl iron derivative of C60(I) as well as on several related organometallic solids. The observed isomer shift and quadrupole splitting parameters are consistent with a bonding interaction between the metal center and the ligand which involves a single carbon–carbon double bond of the buckminsterfullerene. The temperature dependence of the recoil-free fraction, compared to analogous data for maleic anhydride Fe(CO)4(II), suggests that the two previously observed low frequency lattice modes in C60 persist in I. Contrary to expectations, there is no significant temperature-dependent vibrational anisotropy (Gol'danskii–Karyagin effect) evident in the above temperature range. © 1996 American Institute of Physics.
    Materialart: Digitale Medien
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  • 7
    Digitale Medien
    Digitale Medien
    s.l. : American Chemical Society
    Organometallics 3 (1984), S. 586-591 
    ISSN: 1520-6041
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 8
    Digitale Medien
    Digitale Medien
    s.l. : American Chemical Society
    Inorganic chemistry 5 (1966), S. 769-774 
    ISSN: 1520-510X
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 9
    Digitale Medien
    Digitale Medien
    s.l. : American Chemical Society
    Inorganic chemistry 8 (1969), S. 1120-1125 
    ISSN: 1520-510X
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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  • 10
    Digitale Medien
    Digitale Medien
    s.l. : American Chemical Society
    Inorganic chemistry 3 (1964), S. 101-107 
    ISSN: 1520-510X
    Quelle: ACS Legacy Archives
    Thema: Chemie und Pharmazie
    Materialart: Digitale Medien
    Standort Signatur Einschränkungen Verfügbarkeit
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