1 Scope
This standard specifies the graphite furnace atomic absorption spectrometry method, inductively coupled plasma mass spectrometry method, inductively coupled plasma atomic emission spectrometric method and dimethylglyoxime colorimetry method for determination of nickel migration after the food contact materials and articles are immersed in food simulants.
This standard is applicable to determination of migration of nickel from food contact materials and articles.
Method I Graphite Furnace Atomic Absorption Spectrometry Method
2 Theory
Take the part of food contact materials and articles having been immersed in food simulants which is expected to contact with foodstuffs; the immersion solution is atomized by graphite furnace; the absorption value determined at 232.0 nm is proportional to the nickel content within certain concentration range; compare it with standard series for quantification.
3 Reagents and Materials
Unless otherwise specified, guaranteed reagents and Class-II water (defined in GB/T 6682) are adopted for the purpose of this method.
3.1 Reagents
3.1.1 Nitric acid (HNO3).
3.1.2 Ammonium dihydrogen phosphate (NH4H2PO4).
Foreword i
1 Scope
2 Theory
3 Reagents and Materials
4 Instruments and Apparatus
5 Analysis Steps
6 Expression of Analysis Results
7 Precision
8 Others
9 Theory
10 Reagents and Materials
11 Instruments and Apparatus
12 Analysis Steps
13 Expression of Analysis Results
14 Precision
15 Others
Annex A Reference Temperature Rise Procedures of Graphite Furnace Atomic absorption Spectrometer
Standard
GB 31604.33-2016 National Food Safety Standard - Food Contact Materials and Articles -Determination of Migration of Nickel (English Version)
Standard No.
GB 31604.33-2016
Status
valid
Language
English
File Format
PDF
Word Count
3000 words
Price(USD)
60.0
Implemented on
2017-4-19
Delivery
via email in 1 business day
Detail of GB 31604.33-2016
Standard No.
GB 31604.33-2016
English Name
National Food Safety Standard - Food Contact Materials and Articles -Determination of Migration of Nickel
1 Scope
This standard specifies the graphite furnace atomic absorption spectrometry method, inductively coupled plasma mass spectrometry method, inductively coupled plasma atomic emission spectrometric method and dimethylglyoxime colorimetry method for determination of nickel migration after the food contact materials and articles are immersed in food simulants.
This standard is applicable to determination of migration of nickel from food contact materials and articles.
Method I Graphite Furnace Atomic Absorption Spectrometry Method
2 Theory
Take the part of food contact materials and articles having been immersed in food simulants which is expected to contact with foodstuffs; the immersion solution is atomized by graphite furnace; the absorption value determined at 232.0 nm is proportional to the nickel content within certain concentration range; compare it with standard series for quantification.
3 Reagents and Materials
Unless otherwise specified, guaranteed reagents and Class-II water (defined in GB/T 6682) are adopted for the purpose of this method.
3.1 Reagents
3.1.1 Nitric acid (HNO3).
3.1.2 Ammonium dihydrogen phosphate (NH4H2PO4).
Contents of GB 31604.33-2016
Foreword i
1 Scope
2 Theory
3 Reagents and Materials
4 Instruments and Apparatus
5 Analysis Steps
6 Expression of Analysis Results
7 Precision
8 Others
9 Theory
10 Reagents and Materials
11 Instruments and Apparatus
12 Analysis Steps
13 Expression of Analysis Results
14 Precision
15 Others
Annex A Reference Temperature Rise Procedures of Graphite Furnace Atomic absorption Spectrometer