1 Scope
This standard specifies flame atomic absorption spectrometry, inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry for the determination of iron content in foods.
This standard is applicable to the determination of iron content in foods.
Method I Flame Atomic Absorption Spectrometry
2 Principle
After the digestion of specimen, and the atomic absorption flame atomization, the absorbance value is determined at 248.3nm. Within the range of certain concentration, the absorbance value of iron is in direct proportion to the iron content and quantitation is realized by comparing with standard series.
3 Reagents and Materials
Unless otherwise specified, guaranteed reagents and Grade II water (defined in GB/T 6682) are adopted for the purposes of this method.
3.1 Reagents
3.1.1 Nitric acid (HNO3).
3.1.2 Perchloric acid (HClO4).
3.1.3 Sulfuric acid (H2SO4).
3.2 Reagents preparation
3.2.1 Nitric acid solution (5+95): measure 500mL of nitric acid, pour it into 950mL of water and mix well.
3.2.2 Nitric acid solution (1+1): measure 250mL of nitric acid, pour it into 250mL of water and mix well.
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
Appendix A Temperature Programming of Microwave Digestion
Appendix B Reference Conditions of Flame Atomic Absorption Spectrometry
Standard
GB 5009.90-2016 National Food Safety Standard-Determination of Iron in Foods (English Version)
Standard No.
GB 5009.90-2016
Status
superseded
Language
English
File Format
PDF
Word Count
2000 words
Price(USD)
60.0
Implemented on
2017-6-23
Delivery
via email in 1 business day
Detail of GB 5009.90-2016
Standard No.
GB 5009.90-2016
English Name
National Food Safety Standard-Determination of Iron in Foods
Chinese Name
食品安全国家标准 食品中铁的测定
Chinese Classification
Professional Classification
GB
ICS Classification
Issued by
National Health and Family Planning Commission, China Food and Drug Administration
1 Scope
This standard specifies flame atomic absorption spectrometry, inductively coupled plasma atomic emission spectrometry and inductively coupled plasma mass spectrometry for the determination of iron content in foods.
This standard is applicable to the determination of iron content in foods.
Method I Flame Atomic Absorption Spectrometry
2 Principle
After the digestion of specimen, and the atomic absorption flame atomization, the absorbance value is determined at 248.3nm. Within the range of certain concentration, the absorbance value of iron is in direct proportion to the iron content and quantitation is realized by comparing with standard series.
3 Reagents and Materials
Unless otherwise specified, guaranteed reagents and Grade II water (defined in GB/T 6682) are adopted for the purposes of this method.
3.1 Reagents
3.1.1 Nitric acid (HNO3).
3.1.2 Perchloric acid (HClO4).
3.1.3 Sulfuric acid (H2SO4).
3.2 Reagents preparation
3.2.1 Nitric acid solution (5+95): measure 500mL of nitric acid, pour it into 950mL of water and mix well.
3.2.2 Nitric acid solution (1+1): measure 250mL of nitric acid, pour it into 250mL of water and mix well.
Contents of GB 5009.90-2016
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
Appendix A Temperature Programming of Microwave Digestion
Appendix B Reference Conditions of Flame Atomic Absorption Spectrometry
