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  • Geochemie  (45)
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  • 1
    Signatur: 10/M 92.0470 ; G 9230
    In: Developments in geochemistry, 5
    Materialart: Monographie ausleihbar
    Seiten: 481 Seiten , Illustrationen
    ISBN: 0444874933
    Serie: Developments in geochemistry 5
    Klassifikation:
    Geochemie
    Sprache: Englisch
    Anmerkung: TABLE OF CONTENTS FOREWORD 1 INTRODUCTION AND SURVEY OF RADIOANALYSIS 1.1 Introduction 1.2 Principles of radioanalysis 1.2.1 General 1.2.2 Glossary of basic terms and concepts 1.3 Scope and contents References 2 SAMPLING AND PRECONCENTRATION 2.1 Survey and principles 2.1.1 Sampling 2.1.2 From sample to aliquot 2.1.2 .1 General 2.1.2.2 Granular material 2.1.2.3 Water 2.2 Sampling procedures 2.2.1 Rocks 2.2.2 Sediments and pore water 2.2.2.1 Sediments 2.2.2.2 Pore water 2.2.3 Fresh and ground water and related particulate matter 2.2.3.1 Fresh water 2.2.3.2 Ground water 2.2.4 Sea- and estuarine water and related particulate matter and sediments 2.2.4.1 Water 2.2.4.2 Particulate matter 2.2.4.3 Sediment cores 2.2.5 Rainwater and dry deposition 2.2.5.1 Rainwater 2.2.5.2 Dry deposition 2.3 Preconcentration 2.3.1 General 2.3.2 Fresh water and rainwater 2.3.3 Seawater 2.3.3.1 Survey 2.3.3.2 Scavenging procedures 2.3.3.3 Ion-exchange and solvent extraction procedures for Th, U and Pu 2.4 Reference materials 2.4.1 Principle 2.4.2 Survey of reference materials and SRM's 2.4.3 Use of reference materials and SRM's 2.4.3.1 Reference materials 2.4.3.2 SRM's 2.4.4 Reference materials for environmental radioactivity and isotopic ratio measurements References 3 INSTRUMENTAL RADIOANALYSIS OF GEOLOGICAL MATERIALS 3.1 Survey 3.1.1 Activation analysis 3.1.2 Photon activation analysis 3.1.3 Charged particle activation analysis (CPAA and HIAA) 3.1.4 Prompt techniques 3.1.4.1 Neutron induced prompt capture y-ray measurement (PGAA) 3.1.4.2 Proton induced X-ray emission (PIXE) 3.2 Principles 3.2.1 Principles of instrumental neutron activation analysis (INAA) 3.2.1.1 Activation 3.2.1.2 Standardization and flux monitoring 3.2.1.3 Count rate 3.2.1.4 Counting result 3.2.1.5 Sensitivity 3.2.1.6 Characteristic parameters of the three types of neutron activation 3.2.2 Delayed neutron counting 3.2.3 Activation analysis with high-energy photons 3.2.4 Principles of charged particle activation analysis (CPAA) 3.2.5 Principles of prompt techniques 3.2.5.1 Prompt capture gamma-ray measurements (PGAA) 3.2.5.2 Proton induced X-ray emission (PIXE) 3.3 Practical aspects of INAA, IPAA and PIXE 3.3.1 The radioanalytical laboratory 3.3.2 Irradiation facilities for NAA 3.3.2.1 Nuclear reactors 3.3.2.2 Rabbit systems 3.3.2.3 Epithermal activation 3.3.2.4 Neutron generators 3.3.2.5 Delayed neutron counting 3.3.3 Routing of INAA 3.3.4 Practical aspects of IPAA 3.3.5 Practical aspects of CPAA 3.3.6 Practical aspects of PGAA 3.3.7 Practical aspects of PIXE and PIGE 3.3.7.1 Proton induced X-ray emission (PIXE) 3.3.7.2 Proton induced prompt gamma emission (PIGE) 3.3.8 The error-budget 3.4 Multielement determination by INAA based on gamma-ray spectrometry 3.4.1 General 3.4.2 A practical procedure for INAA of silicates based on thermal neutrons 3.4.2.1 Preparation of sample and standards for irradiation 3.4.2.2 Irradiation and measurements 3.4.2.3 Conclusion 3.4.3 Rocks and ores 3.4.4 Meteorites 3.4.5 Sediments 3.4.6 Air-dust 3.4.7 Coal and ash 3.5 Instrumental neutron activation analysis of the lanthanides 3.6 Instrumental neutron activation analysis of uranium 3.7 Applications of instrumental neutron activation analysis with an isotopic neutron source and a 14.5 MeV neutron generator 3.7.1 Survey 3.7.2 INAA with isotopic neutron sources in the radiochemical laboratory 3.7.3 INAA with the neutron generator in the radiochemical laboratory 3.7.4. Conclusion 3.8 Applications of IPAA to silicates 3.9 Applications of IPAA to silicates 3.10 Applications of prompt techniques 3.10.1 Applications of PGAA and PIGE 3.10.2 Applications of PIXE References 4 NEUTRON ACTIVATION ANALYSIS INCLUDING CHEMICAL SEPARATION OF GEOLOGICAL SAMPLES 4.1 Introduction 4.2 Dissolution procedures and separation schemes 4.3 Lanthanides 4.3.1 General 4.3.2 Present procedures 4.4 Noble metals 4.4.1 General 4.4.2 Separation schemes 4.4.3 Single element determinations 4.5 Uranium and thorium 4.5.1 General 4.5.2 Procedures 4.5.2.1 Uranium 4.5.2.2 Thorium 4.6 Other elements 4.6.1 General 4.6.2 Alkali metals 4.6.3 Earth alkali metals 4.6.4 Copper and zinc 4.6.5 Mercury 4.6.6 Indium 4.6.7 Thallium 4.6.8 Tin 4.6.9 Elements with volatile halides and hydrides: Ga, Ge, As, Se, Sb, Te 4.6.9.1 Survey 4.6.9.2 Procedures 4.6.10 Vanadium and tantalum 4.6.11 Chromium 4.6.12 Molybdenum andtungsten 4.6.13 Halogens References 5 RADIOANALYSIS OF WATER 5.1 Survey 5.2 Elemental analysis of fresh water 5.2.1 Survey 5.2.2 Routine elemental analysis of rainwater 5.2.2.1 Sampling and sample treatment 5.2.2.2 Irradiation and processing of aliquots 5.2.2.3 Results 5.2.3 Special elemental analysis of rainwater 5.2.3.1 Bromine and iodine by isotopic exchange 5.2.3.2 Iodate by anion-exchange 5,2.3.3 Silver by cation-exchange and subsequent INAA 5.2.4 Routine elemental analysis of surface and ground water 5.2.4,1 General 5.2.4.2 Routine procedures 5.3 Elemental analysis of seawater 5.3.1 Survey 5.3.2 Routine elemental analysis of seawater by preconcentration on a "Chelex"-column and INAA 5.3.3 Routine elemental analysis of seawater by preconcentration on active carbon 5.3.3,1 General 5.3.3.2 Arsenic and antimony 5,3.3.3 Vanadium, iodine, tellurium and uranium 5.3.3.4 Total antimony, molybdenum and tungsten 5,3.3.5 Chromate, cobalt, nickel and tetravalent selenium 5.3.3,6 Mercury 5.3.4 Special elemental analysis of seawater 5.3.4.1 General 5.3.4.2 Rubidium and cesium 5.3.4.3 Strontium 5.3.4.4 Manganese and zinc 5,3,4.5 Tin 5.3.4.6 Nickel 5.3.4.7 Noble metals 5.3.4.8 Mercury References 6 RADIOTRACER EXPERIMENTS IN THE LABORATORY 6.1 Survey 6.2 Basic equations of radiotracer experiments in closed systems 6.3 Isotopic exchange in solution 6.4 Isotopic exchange between a solution and a solid 6.5 Reactions in solution 6.6 Reaction between a solution and a solid 6.6.1 Dissolution 6.6. 2 Leaching 6.6.3 Diffusion from solids 6.6.4 Sorption 6.7 Migration studies in solid-liquid systems 6.7.1 General 6.7.2 The determina tion of distribution coefficients in seawater 6.7.3 Radioecological column experiments in the laboratory 6.7.4 Laboratory experiments on very slow migration; the case of the actinides References 7 RADIOTRACER EXPERIMENTS IN THE FIELD 7.1 Survey 7.2 Principles of (radio)tracer experiments in open systems with flow in one direction 7.2.1 Basic concepts 7.2.2 Measurement of linear velocity and flow rate 7.2.3 Measurement of axial dispersion 7.2.4 Measurement of sedimentation rates 7.2.4.1 General 7.2.4.2 Lead-210 7.2.4.3 Cesium-137 7.2.5 Measurement of the degree of sediment mixing 7.2.6 Measurement of filtration velocity in case of horizontal groundwater flow 7.2.7 Measurement of groundwater flow in the unsaturated zone by radiocarbon 7.3 Principles of (radio)tracer experiments in open systems with flow in various directions 7.3.1 Survey 7.3.2 Measurement of sand or silt flow rates on the sea floor 7.3.3 Radiotracer measurements in water movement in the saturated zone 7.3.4 Radiotracer measurement on water movement in the unsaturated zone 7.4 Practical aspects of radiotracer experiments in the field 7.4.1 Preparation 7.4.2 Performance 7.4.3 Calculations References 8 MEASUREMENT OF NATURAL RADIOACTIVITY 8.1 General 8.1.1 Survey 8.1.2 Concentrations 8.1.3 Detection by direct measurement ofradiation 8.1.3.1 In situ measurements of uranium and thorium 8.1.3.2 Laboratory measurements 8.1.4 Detection by secundary effects 8.2 Measurement of low-level gamma-activities 8.2.1 General 8.2.2 A low background system (LBS) 8.2.2.1 Set-up 8.2.2.2 Limits of detection and determination 8.2.2.3 Processing of data 8.2.3. Anti-coincidence (AC)-counting 8.3 Measurements in rocks and sediments 8.3.1 General 8.3.2 Radon measurements (emanometry) 8.3.3 Age dating by measurement of disequilibrium in the natural decay-series 8.3.3.1 General 8.3.3.2 234U-230Th 8.3.3.3 235U-231Pa 8.3.3.4 232Th-230Th 8.3.3.5 230Th-231Pa 8.3.4 Environmental laboratory measurements on naturally occurring radionucl
    Standort: Lesesaal
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 2
    Signatur: 10/M 18.91518
    In: Geochemical Atlas of Europe / FOREGS
    Beschreibung / Inhaltsverzeichnis: The IUGS/IAGC Global Geochemical Baselines Programme aims to establish a global geochemical reference baseline for 〉60 determinants in a range of media for environmental and other applications. The European contribution to the programme has been carried out by government institutions from 26 countries under the auspices of the Forum of European Geological Surveys (FOREGS) The main objectives of this European survey were: 1) to apply standardised methods of sampling, chemical analysis and data management to prepare a geochemical baseline across Europe; and 2) to use this reference network to level national baseline datasets. Samples of stream water, stream sediment and three types of soil (organic top layer, minerogenic top and sub soil) have been collected at 900 stations, each representing a catchment area of 100 km2, corresponding to a sampling density of about one sample per 4700 km2. In addition, the uppermost 25 cm of floodplain sediment was sampled from 790 sites each representing a catchment area of 1000 km2. All soil and sediment samples were prepared at the same laboratory, and all samples of particular sample types were analysed by the same method at the same laboratory. More than 50 elements, both total and aqua regia extractable concentrations, and other parameters (such as pH and grain size) were determined on the 〈2 mm grain size fraction of minerogenic samples, and total concentrations of organic soil samples were measured after using a strong acid digestion. Nine laboratories of European geological surveys carried out the analytical work. Altogether, 360 geochemical maps showing the distribution of elements across Europe have been prepared. All the results and field observations are organised in a common database and the maps are published as a Geochemical Atlas of Europe. All the sampling sites were photographed and this photo archive is also available. Samples have been archived in the Slovak Republic for possible future use. Initial results show that the distribution patterns of both water and solid samples are related to such factors as large-scale tectonic provinces, geochemical variation of large lithological units, extension of the Weichselian glaciation, and contamination reflecting industrialized areas and regions of intensive agriculture. Key words (GeoRef Thesaurus, AGI): geochemical surveys, baseline studies, soils, sediments, stream water, sampling, sample preparation, chemical analysis, geochemical maps, atlas, areal geology, Europe
    Materialart: Monographie ausleihbar
    Seiten: 526 Seiten , Illustrationen, Karten
    ISBN: 951-690-921-3
    Serie: Geochemical Atlas of Europe 1
    Klassifikation:
    Geochemie
    Sprache: Englisch
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 3
    Signatur: 21/STR 05/02
    In: Scientific Technical Report STR
    Materialart: GFZ-Veröffentlichungen
    Seiten: VIII, 99, LXXVI S. , Ill., graph. Darst.
    Serie: Scientific Technical Report STR 05/02
    Klassifikation:
    Geochemie
    Anmerkung: Potsdam, Univ., Diss., 2003
    Standort: Lesesaal
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 4
    Signatur: 11/M 05.0616
    In: Reviews in mineralogy & geochemistry
    Beschreibung / Inhaltsverzeichnis: As geomicrobiologists, we seek to understand how some of nature's most complex systems work, yet the very complexity we seek to understand has placed many of the insights out of reach. Recent advances in cultivation methodologies, the development of ultrahigh throughput DNA sequencing capabilities, and new methods to assay gene expression and protein function open the way for rapid progress. In the eight years since the first Geomicrobiology volume (Geomicrobiology: Interactions between microbes and minerals; volume 35 in this series) we have transformed into scientists working hand in hand with biochemists, molecular biologists, genome scientists, analytical chemists, and even physicists to reveal the most fundamental molecular-scale underpinnings of biogeochemical systems. Through synthesis achieved by integration of diverse perspectives, skills, and interests, we have begun to learn how organisms mediate chemical transformations, the ways in which the environment determines the architecture of microbial communities, and the interplay between evolution and selection that shapes the biodiversity of the planet. This volume presents chapters written by leaders in the rapidly maturing field we refer to as molecular geomicrobiology. Most of them are relatively young researchers who share their approaches and insights and provide pointers to exciting areas ripe for new advances. This volume ties together themes common to environmental microbiology, earth science, and astrobiology. The resesarch presented here, the associated short course, and the volume production were supported by funding from many sources, notably the Mineralogical Society of America, the Geochemical Society, the US Department of Energy Chemical Sciences Program and the NASA Astrobiology Institute.
    Materialart: Monographie ausleihbar
    Seiten: XIV, 294 S.
    ISBN: 0-939950-71-5 , 978-0-939950-71-3
    ISSN: 1529-6466
    Serie: Reviews in mineralogy & geochemistry 59
    Klassifikation:
    Geochemie
    Anmerkung: Chapter 1. The search for a molecular-level understanding of the processes that underpin the Earth's biogeochemical cycles by Jillian F. Banfield, Gene W. Tyson, Eric E. Allen, and Rachel J. Whitaker, p. 1 - 8 Chapter 2. What genetics offers geobiology by Dianne K. Newman and Jeffrey A. Gralnick, p. 9 - 26 Chapter 3. Enzymology of electron transport: energy generation with geochemical consequences by Thomas J. DiChristina, Jim K. Fredrickson, and John M. Zachara, p. 27 - 52 Chapter 4. Siderophores and the dissolution of iron-bearing minerals in marine systems by Stephan M. Kraemer, Alison Butler, Paul Borer, and Javiera Cervini-Silva, p. 53 - 84 Chapter 5. Geomicrobiological cycling of iron by Andreas Kappler and Kristina L. Straub, p. 85 - 108 Chapter 6. Molecular-scale processes involving nanoparticulate minerals in biogeochemical systems by Benjamin Gilbert, Jillian F. Banfield, p. 109 - 156 Chapter 7. The organic-mineral interface in biominerals by Pupa Gilbert, Mike Abrecht, and Bradley H. Frazer, p. 157 - 186 Chapter 8. Catalysis and prebiotic synthesis by James P. Ferris, p. 187 - 210 Chapter 9. The evolution of biological carbon and nitrogen cycling-a genomic perspective by Jason Raymond, p. 211 - 232 Chapter 10. Building the biomarker tree of life by Jchen J. Brocks and Ann Pearson, p. 233 - 258 Chapter 11. Population dynamics through the lens of extreme environments by Rachel J. Whitaker and Jillian F. Banfield, p. 259 - 278 Chapter 12. Metabolism and genomics: adventures derived from complete genome sequencing by Kenneth H. Nealson and Barbara Methe, p. 279 - 294
    Standort: Lesesaal
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 5
    Signatur: M 06.0249
    Materialart: Monographie ausleihbar
    Seiten: 96, XVII S.
    Klassifikation:
    Geochemie
    Anmerkung: Berlin, Freie Univ., Diss., 2006
    Standort: Kompaktmagazin oben
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 6
    Signatur: 10/M 06.0568
    In: Developments in geochemistry
    Beschreibung / Inhaltsverzeichnis: Contents: 1. Why we should care: the impact of anthropogenic carbon dioxide on the carbon cycle.2. The thermodynamic background.3. Carbon dioxide and CO2-H2O mixtures.4. The aqueous electrolytic solution.5. The product solid phases.6. The kinetics of mineral carbonation.7. Reaction path modeling of geological CO2 sequestration.
    Materialart: Monographie ausleihbar
    Seiten: xv, 453 S.
    ISBN: 0444529500
    Serie: Developments in geochemistry 11
    Klassifikation:
    Geochemie
    Standort: Lesesaal
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 7
    Signatur: 11/M 05.0569
    Beschreibung / Inhaltsverzeichnis: Contents: The Focused Ion Beam Instrument. Ion,Solid Interactions. Focused Ion Beam Gases for Deposition and Enhanced Etch. Three-Dimensional Nanofabrication Using Focused Ion Beams. Device Edits and Modifications. The Uses of Dual Beam FIB in Microelectronic Failure Analysis. High Resolution Live Imaging of FIB Milling Processes for Optimum Accuracy. FIB for Materials Science Applications. Practical Aspects of FIB TEM Specimen Preparation. FIB LiftOut Specimen Preparation Techniques. A FIB MicroSampling Technique and a Site Specific TEM Specimen Preparation Method. DualBeam (FIBSEM) Systems. Focused Ion Beam Secondary Ion Mass Spectrometry (FIBSIMS). Quantitative Three Dimensional Analysis Using Focused Ion Beam Microscopy. Applications of FIB in Combination with Auger Electron Spectroscopy.
    Materialart: Monographie ausleihbar
    Seiten: xiv, 357 S. , Ill., graph. Darst.
    ISBN: 0387231161
    Klassifikation:
    Geochemie
    Standort: Lesesaal
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 8
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Boulder, Colo. : The Geological Society of America
    Dazugehörige Bände
    Signatur: S 90.0095(384)
    In: Special paper
    Beschreibung / Inhaltsverzeichnis: Contents: Terrestrial craters: Structure, geophysics and cratering motions. - Terrestrial craters: Ejecta studies. - Shock metamorphism. - The planetary perspective.
    Materialart: Schriftenreihen ausleihbar
    Seiten: viii, 476 S.
    ISBN: 0813723841
    Serie: Special paper / Geological Society of America 384
    Klassifikation:
    Geochemie
    Standort: Kompaktmagazin unten
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 9
    Monographie ausleihbar
    Monographie ausleihbar
    Sudbury, Mass. [u.a.] : Jones and Bartlett Publishers
    Signatur: 10/M 05.0398
    Beschreibung / Inhaltsverzeichnis: Contents: The Earth's Aggregate Physical and Chemical State. Introduction to Thermodynamics. Mixture and Simple Phase Relations. Mineral Chemistry. Aqueous Solutions. Chemistry of Natural Waters. Chemistry of Igneous Rocks. Chemical Controls on Soil Formation, Diagenesis, Metamorphism, and Hydrothermal Ore Deposition . Radioactive Isotope Geochemistry. Stable Isotope Geochemistry. Surface Sorption Geochemistry. Chemical Kinetics. Oxidation and Reduction. Organic Geochemistry. Atmospheric Chemistry
    Materialart: Monographie ausleihbar
    Seiten: xiv, 704 S. : Ill.
    ISBN: 0763726427
    Klassifikation:
    Geochemie
    Standort: Lesesaal
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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  • 10
    Schriftenreihen ausleihbar
    Schriftenreihen ausleihbar
    Warszawa : Inst. Geofizyki Polskiej Akad. Nauk
    Dazugehörige Bände
    Signatur: S 91.0236(D-70) / Regal 35
    In: Publications of the Institute of Geophysics, Polish Academy of Sciences
    Materialart: Schriftenreihen ausleihbar
    Seiten: 67 S.
    ISBN: 8388765612
    Serie: Publications of the Institute of Geophysics, Polish Akademie of Sciences : D, Physics of the atmosphere 70 = 389 : monograph volume
    Klassifikation:
    Geochemie
    Standort: Kompaktmagazin unten
    Zweigbibliothek: GFZ Bibliothek
    Standort Signatur Erwartet Verfügbarkeit
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