GB 31604.46-2016 National Food Safety Standard - Food Contact Materials and Articles -Determination of Free Phenols and Determination of Migration (English Version)
1 Scope
This standard specifies the gas chromatography method for the determination of styrene and ethylbenzene content in food contact materials and articles.
This standard is applicable to the determination of styrene and ethylbenzene in polystyrene products, unsaturated polyester resin and its glass fiber reinforced plastics products.
2 Principle
Inject the sample extracted by carbon disulfide into gas chromatography, separate styrene, ethyl benzene with internal standard n-dodecane and other components in the chromatographic column, detect with hydrogen flame ionization detector, and carry out quantative determination by internal standard method.
3 Reagents and Materials
3.1 Reagent
Carbon disulfide (CS2, CAS No.: 75-15-0): chromatographically pure.
3.2 Standard products
3.2.1 Styrene (C8H8, CAS No.: 100-42-5): with purity>99.5%, or reference material approved and awarded with reference material certificate by the State.
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 Other
Annex A Gas Chromatogram of Standard Solutions
GB 31604.46-2016 National Food Safety Standard - Food Contact Materials and Articles -Determination of Free Phenols and Determination of Migration (English Version)
Standard No.
GB 31604.46-2016
Status
superseded
Language
English
File Format
PDF
Word Count
2000 words
Price(USD)
40.0
Implemented on
2017-4-19
Delivery
via email in 1 business day
Detail of GB 31604.46-2016
Standard No.
GB 31604.46-2016
English Name
National Food Safety Standard - Food Contact Materials and Articles -Determination of Free Phenols and Determination of Migration
1 Scope
This standard specifies the gas chromatography method for the determination of styrene and ethylbenzene content in food contact materials and articles.
This standard is applicable to the determination of styrene and ethylbenzene in polystyrene products, unsaturated polyester resin and its glass fiber reinforced plastics products.
2 Principle
Inject the sample extracted by carbon disulfide into gas chromatography, separate styrene, ethyl benzene with internal standard n-dodecane and other components in the chromatographic column, detect with hydrogen flame ionization detector, and carry out quantative determination by internal standard method.
3 Reagents and Materials
3.1 Reagent
Carbon disulfide (CS2, CAS No.: 75-15-0): chromatographically pure.
3.2 Standard products
3.2.1 Styrene (C8H8, CAS No.: 100-42-5): with purity>99.5%, or reference material approved and awarded with reference material certificate by the State.
Contents of GB 31604.46-2016
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 Other
Annex A Gas Chromatogram of Standard Solutions