GB 31604.39-2016 National Food Safety Standard - Food Contact Materials and Articles -Determination of Polychlorobiphenyls (PCBs) in Food Contact Paper (English Version)
1 Scope
This standard specifies the determination method for polychlorobiphenyls in food contact paper through gas chromatography or gas chromatography-mass spectrometry.
As for this standard, Method I is gas chromatography and Method II is gas chromatography-mass spectrometry, which are applicable to the determination of 8 polychlorobiphenyls in all kinds of food contact paper.
Method I Gas Chromatography
2 Principle
Polychlorobiphenyls in single-layer food contact paper are extracted with mixed solution of n-hexane and methylene chloride through oscillation in water bath or with accelerated solvent extraction instrument while those in composite food contact paper are extracted with accelerated solvent extraction instrument. Extracting solution, after being concentrated and subjected to sulphonation treatment by using concentrated sulfuric acid, is detected with gas chromatograph equipped with electron capture detector and quantitatively determined by internal standard method.
3 Reagents and Materials
Unless otherwise specified, analytically-pure reagents and Class-I water (defined in GB/T 6682) are adopted for the purpose of this method.
3.1 Reagents
3.1.1 n-hexane(C6H14): chromatographically pure.
3.1.2 Methylene chloride (CH2Cl2).
Foreword i
1 Scope
2 Principle
3 Reagents and Materials
4 Instruments and Apparatus
5 Analysis Steps
6 Expression of Analysis Results
7 Accuracy
8 Others
9 Principle
10 Reagents and Materials
11 Instruments and Apparatus
12 Analysis Steps
13 Expression of Analysis Results
14 Accuracy
15 Others
Annex A Relevant Information of 8 Polychlorobiphenyls and the Internal Standard Substance
Annex B Gas Chromatogram for Standard Solutions of 8 Polychlorobiphenyls and the Internal Standard Substance
Annex C Characteristic Ion of 8 Polychlorobiphenyls and Internal Standard Substance
Annex D Total Ion Current Chromatogram of Gas Chromatography-mass Spectrometry for the Standard Solutions of 8 Polychlorobiphenyls and Internal Standard Substance
Standard
GB 31604.39-2016 National Food Safety Standard - Food Contact Materials and Articles -Determination of Polychlorobiphenyls (PCBs) in Food Contact Paper (English Version)
Standard No.
GB 31604.39-2016
Status
valid
Language
English
File Format
PDF
Word Count
4500 words
Price(USD)
70.0
Implemented on
2017-4-19
Delivery
via email in 1 business day
Detail of GB 31604.39-2016
Standard No.
GB 31604.39-2016
English Name
National Food Safety Standard - Food Contact Materials and Articles -Determination of Polychlorobiphenyls (PCBs) in Food Contact Paper
1 Scope
This standard specifies the determination method for polychlorobiphenyls in food contact paper through gas chromatography or gas chromatography-mass spectrometry.
As for this standard, Method I is gas chromatography and Method II is gas chromatography-mass spectrometry, which are applicable to the determination of 8 polychlorobiphenyls in all kinds of food contact paper.
Method I Gas Chromatography
2 Principle
Polychlorobiphenyls in single-layer food contact paper are extracted with mixed solution of n-hexane and methylene chloride through oscillation in water bath or with accelerated solvent extraction instrument while those in composite food contact paper are extracted with accelerated solvent extraction instrument. Extracting solution, after being concentrated and subjected to sulphonation treatment by using concentrated sulfuric acid, is detected with gas chromatograph equipped with electron capture detector and quantitatively determined by internal standard method.
3 Reagents and Materials
Unless otherwise specified, analytically-pure reagents and Class-I water (defined in GB/T 6682) are adopted for the purpose of this method.
3.1 Reagents
3.1.1 n-hexane(C6H14): chromatographically pure.
3.1.2 Methylene chloride (CH2Cl2).
Contents of GB 31604.39-2016
Foreword i
1 Scope
2 Principle
3 Reagents and Materials
4 Instruments and Apparatus
5 Analysis Steps
6 Expression of Analysis Results
7 Accuracy
8 Others
9 Principle
10 Reagents and Materials
11 Instruments and Apparatus
12 Analysis Steps
13 Expression of Analysis Results
14 Accuracy
15 Others
Annex A Relevant Information of 8 Polychlorobiphenyls and the Internal Standard Substance
Annex B Gas Chromatogram for Standard Solutions of 8 Polychlorobiphenyls and the Internal Standard Substance
Annex C Characteristic Ion of 8 Polychlorobiphenyls and Internal Standard Substance
Annex D Total Ion Current Chromatogram of Gas Chromatography-mass Spectrometry for the Standard Solutions of 8 Polychlorobiphenyls and Internal Standard Substance