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Sample Preparation Techniques
in Analytical Chemistry
Edited by
SOMENATH MITRA
Department of Chemistry and Environmental Science
New Jersey Institute of Technology

CONTENTS
CONTRIBUTORS xvii
PREFACE xix
CHAPTER 1 SAMPLE PREPARATION: AN
ANALYTICAL PERSPECTIVE 1
Somenath Mitra and Roman Brukh
1.1. The Measurement Process 1
1.1.1. Qualitative and Quantitative
Analysis 3
1.1.2. Methods of Quantitation 4
1.2. Errors in Quantitative Analysis: Accuracy
and Precision 6
1.2.1. Accuracy 6
1.2.2. Precision 6
1.2.3. Statistical Aspects of Sample
Preparation 10
1.3. Method Performance and Method
Validation 12
1.3.1. Sensitivity 13
1.3.2. Detection Limit 14
1.3.3. Range of Quantitation 15
1.3.4. Other Important Parameters 15
1.3.5. Method Validation 16
1.4. Preservation of Samples 17
1.4.1. Volatilization 19
1.4.2. Choice of Proper Containers 19
1.4.3. Absorption of Gases from the
Atmosphere 20
1.4.4. Chemical Changes 20
1.4.5. Preservation of Unstable Solids 20
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