1 Scope
This standard specifies flame atomic absorption spectrometry, titrimetric method, inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry for the determination of calcium content in foods.
This standard is applicable to the determination of calcium content in foods.
Method I Flame Atomic Absorption Spectrometry
2 Principle
After the digestion treatment of specimen, add into lanthanum solution as the releasing agent, and through the atomic absorption flame atomization, the absorbance value determined at 422.7nm is in direct proportion to the calcium content within the range of certain concentration and compare with standard series for quantitation.
3 Reagents and Materials
Contents
Foreword i
1 Scope
2 Principle
3 Reagents and Materials
4 Apparatuses
5 Analysis Procedures
6 Expression of Analysis Results
7 Accuracy
8 Others
9 Principle
10 Reagents and Materials
11 Apparatuses
12 Analysis Procedures
13 Expression of Analysis Results
14 Accuracy
15 Others
Appendix A Reference Conditions of Temperature Programming of Microwave Digestion
Appendix B Reference Conditions of Flame Atomic Absorption Spectrometry
1 Scope
This standard specifies flame atomic absorption spectrometry, titrimetric method, inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry for the determination of calcium content in foods.
This standard is applicable to the determination of calcium content in foods.
Method I Flame Atomic Absorption Spectrometry
2 Principle
After the digestion treatment of specimen, add into lanthanum solution as the releasing agent, and through the atomic absorption flame atomization, the absorbance value determined at 422.7nm is in direct proportion to the calcium content within the range of certain concentration and compare with standard series for quantitation.
3 Reagents and Materials
Contents of GB 5009.92-2016
Contents
Foreword i
1 Scope
2 Principle
3 Reagents and Materials
4 Apparatuses
5 Analysis Procedures
6 Expression of Analysis Results
7 Accuracy
8 Others
9 Principle
10 Reagents and Materials
11 Apparatuses
12 Analysis Procedures
13 Expression of Analysis Results
14 Accuracy
15 Others
Appendix A Reference Conditions of Temperature Programming of Microwave Digestion
Appendix B Reference Conditions of Flame Atomic Absorption Spectrometry