Analytical Methods in Geochemical Prospecting (eBook)

Front Cover 1
Analytical Methods in Geochemical Prospecting 4
Copyright Page 5
Table of Contents 12
Editor's Foreword 6
Preface 10
CHAPTER 1. INTRODUCTION 16
Analysis of exploration samples: choice of methods 20
Reporting results 36
Safety 38
CHAPTER 2. QUALITY CONTROL IN THE LABORATORY 40
Introduction 40
Random errors 42
Systematic errors 56
A quality control programme 61
CHAPTER 3. SAMPLE PREPARATION 62
Introduction 62
Preparation of rock samples 63
CHAPTER 4. SAMPLE DECOMPOSITION-SOLUTION TECHNIQUES 72
Introduction 72
Strong decompositions 73
Partial extractions 86
Summary 109
CHAPTER 5. COLORIMETRY AND RELATED TECHNIQUES 112
Introduction 112
Colorimetry 113
Fluorimetry 121
Turbidimetric methods 123
CHAPTER 6. ATOMIC ABSORPTION SPECTROPHOTOMETRY 124
Introduction 124
Theory 124
Instrumentation 127
Applications 136
CHAPTER 7. EMISSION SPECTROSCOPY 154
Introduction 154
Theory 155
Flame emission spectroscopy 156
Semi-quantitative DC-arc spectroscopy 157
Direct-reading DC-arc spectrometry 167
Plasma sources 172
CHAPTER 8. X-RAY FLUORESCENCE 182
Introduction 182
Theory 183
Instrumentation 188
Operation of the X-ray fluorescence spectrometer 197
Analysis of geochemical samples 201
CHAPTER 9. ELECTROCHEMICAL METHODS 214
Introduction 214
Theory 215
Determination of pH 218
Specific ion electrodes 220
Appendix 1: Colour photographs 228
Appendix 2: Preparation of standards 229
References 232
Subject index 256