Analytical Methods in Geochemical Prospecting

Analytical Methods in Geochemical Prospecting

1st Edition - January 1, 1983

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  • Author: W.K. Fletcher
  • eBook ISBN: 9781483289663

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Description

Handbook of Exploration Geochemistry, Volume I: Analytical Methods in Geochemical Prospecting focuses on the principles, methodologies, approaches, and techniques employed in geochemical prospecting. The book first underscores quality control in the laboratory, sample preparation, sample decomposition-solution techniques, and colorimetry and related techniques. Discussions focus on colorimetry, turbidimetric methods, strong decompositions, partial extractions, preparation of rock samples, random and systematic errors, and quality control program. The publication then takes a look at atomic absorption spectrophotometry, emission spectroscopy, and X-ray fluorescence. Concerns cover instrumentation, operation of the X-ray fluorescence spectrometer, flame emission spectroscopy, semi-quantitative DC-arc spectroscopy, and plasma sources. The text examines electrochemical methods, including determination of pH and specific ion electrodes. The publication is a dependable reference for researchers interested in the analytical methods in geochemical prospecting.

Table of Contents


  • Editor's Foreword

    Preface

    Chapter 1. Introduction

    Analysis of Exploration Samples: Choice of Methods

    Geochemical Considerations

    Analytical and Organizational Considerations

    Reporting Results

    Safety

    Chapter 2. Quality Control in the Laboratory

    Introduction

    Random Errors

    Precision

    Detection Limits

    Sources of and Reduction of Random Errors

    Laboratory Sampling

    Systematic Errors

    Contamination

    Drift

    Physical and Chemical Interferences

    Control and Monitoring of Systematic Errors

    Accuracy

    A Quality Control Programme

    Chapter 3. Sample Preparation

    Introduction

    Preparation of Rock Samples

    Soils and Sediments

    Vegetation

    Waters

    Chapter 4. Sample Decomposition-Solution Techniques

    Introduction

    Strong Decompositions

    Acid Digestion

    Fusions

    Partial Extractions

    Application to Bedrock Samples

    Application to Soils and Sediments

    Summary

    Chapter 5. Colorimetry and Related Techniques

    Introduction

    Colorimetry

    Fluorimetry

    Turbidimetric Methods

    Chapter 6. Atomic Absorption Spectrophotometry

    Introduction

    Theory

    Instrumentation

    The Light Source

    Production of Atomic Vapour

    Wavelength Selection

    Detection and Readout Systems

    Applications

    Flame Atomic Absorption

    Electrothermal Atomization

    Hydride Generation

    Determination of Mercury by Flameless AAS

    Indirect Determinations of Elements by AAS

    Chapter 7. Emission Spectroscopy

    Introduction

    Theory

    Flame Emission Spectroscopy

    Semi-Quantitative DC-Arc Spectroscopy

    Equipment

    Operating Conditions

    Standards for Semi-Quantitative DC-Arc Spectroscopy

    Analysis of Unknowns

    Direct-Reading DC-Arc Spectrometry

    Matrix Effects

    Background

    Spectral Interferences

    Plasma Sources

    the Inductively Coupled Plasma

    Analysis of Geochemical Samples

    Chapter 8. X-Ray Fluorescence

    Introduction

    Theory

    Excitation of X-Rays

    Interaction of X-Rays with Matter

    Instrumentation

    Primary Radiation Sources

    Dispersion of X-Rays

    Operation of the X-Ray Fluorescence Spectrometer

    Instrument Conditions

    Counting Strategy

    Analysis of Geochemical Samples

    Sample Preparation

    Matrix Corrections

    Line Interferences

    Summary

    Chapter 9. Electrochemical Methods

    Introduction

    Theory

    Determination of pH

    Specific Ion Electrodes

    Fluoride

    Chloride

    Iodide

    Copper

    Boron

    Appendix 1 — Colour Photographs

    Appendix 2 — Preparation of Standards

    References

    Subject Index

Product details

  • Language: English
  • Copyright: © Elsevier Science 1983
  • Published: January 1, 1983
  • Imprint: Elsevier Science
  • eBook ISBN: 9781483289663

About the Author

W.K. Fletcher

About the Editor

G.J.S. Govett

Affiliations and Expertise

Professor, University of New Brunswick

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