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Chapter 3. Data handling in qualitative and quantitative analysis

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Analytical Methods in Chemical Analysis
This chapter is in the book Analytical Methods in Chemical Analysis

Abstract

This chapter describes various aspects of quantitative analysis such as sampling, evaluation of analytical data, errors, accuracy, and precision, and methods of data expression. Normal law of distribution of indeterminate errors, statistical test of data, F-, Q-, and t-tests, rejection of data, and confidence intervals will also be discussed.

The knowledge of sampling, for example, sample size, number of sample analysis, and method of sampling, is needed to design a correct analysis method. Accuracy and precision are necessary steps which should be taken into consideration while collecting data. After this, different statistical tests, that is, t-test, Q-test, and F-test are performed to express the uncertainty in measured values for each step of the analysis. By doing this, we can find out the limitations of analytical method and also understand the significance of data set so that we can minimize error in the analyzed result.

Abstract

This chapter describes various aspects of quantitative analysis such as sampling, evaluation of analytical data, errors, accuracy, and precision, and methods of data expression. Normal law of distribution of indeterminate errors, statistical test of data, F-, Q-, and t-tests, rejection of data, and confidence intervals will also be discussed.

The knowledge of sampling, for example, sample size, number of sample analysis, and method of sampling, is needed to design a correct analysis method. Accuracy and precision are necessary steps which should be taken into consideration while collecting data. After this, different statistical tests, that is, t-test, Q-test, and F-test are performed to express the uncertainty in measured values for each step of the analysis. By doing this, we can find out the limitations of analytical method and also understand the significance of data set so that we can minimize error in the analyzed result.

Chapters in this book

  1. Frontmatter I
  2. Preface V
  3. Contents VII
  4. List of authors IX
  5. About the editors XI
  6. Abbreviations XIII
  7. Section I: Analytical chemistry
  8. Chapter 1. Introduction to analytical chemistry 3
  9. Section II: Qualitative and quantitative aspects of analysis
  10. Chapter 2. Quantitative aspects of analysis 23
  11. Chapter 3. Data handling in qualitative and quantitative analysis 37
  12. Section III: Spectrochemical methods of analysis
  13. Chapter 4. UV–visible spectroscopy 59
  14. Chapter 5. Infrared spectroscopy 81
  15. Chapter 6. Flame atomic absorption and emission spectroscopy 117
  16. Section IV: Thermoanalytical Methods
  17. Chapter 7 Thermogravimetric (TG) and derivative thermogravimetric analysis (DTG) 147
  18. Chapter 8. Differential thermal analysis 169
  19. Section V: Electroanalytical Methods
  20. Chapter 9. pH Metry 179
  21. Chapter 10. Conductance 205
  22. Chapter 11 Electrochemistry 229
  23. Section VI: Separation methods and chromatography
  24. Chapter 12. Separation methods in analysis 263
  25. Chapter 13 Chromatographic methods 281
  26. Chapter 14. Chromatographic techniques 293
  27. Index 323
https://doi.org/10.1515/9783110794816-003

Chapters in this book

  1. Frontmatter I
  2. Preface V
  3. Contents VII
  4. List of authors IX
  5. About the editors XI
  6. Abbreviations XIII
  7. Section I: Analytical chemistry
  8. Chapter 1. Introduction to analytical chemistry 3
  9. Section II: Qualitative and quantitative aspects of analysis
  10. Chapter 2. Quantitative aspects of analysis 23
  11. Chapter 3. Data handling in qualitative and quantitative analysis 37
  12. Section III: Spectrochemical methods of analysis
  13. Chapter 4. UV–visible spectroscopy 59
  14. Chapter 5. Infrared spectroscopy 81
  15. Chapter 6. Flame atomic absorption and emission spectroscopy 117
  16. Section IV: Thermoanalytical Methods
  17. Chapter 7 Thermogravimetric (TG) and derivative thermogravimetric analysis (DTG) 147
  18. Chapter 8. Differential thermal analysis 169
  19. Section V: Electroanalytical Methods
  20. Chapter 9. pH Metry 179
  21. Chapter 10. Conductance 205
  22. Chapter 11 Electrochemistry 229
  23. Section VI: Separation methods and chromatography
  24. Chapter 12. Separation methods in analysis 263
  25. Chapter 13 Chromatographic methods 281
  26. Chapter 14. Chromatographic techniques 293
  27. Index 323
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