GB 4806.8-2022 PDF in English
GB 4806.8-2022 (GB4806.8-2022) PDF English
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National Food Safety Standard - Food Contact Paper and Board Materials and Their Products
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| GB 4806.8-2016 | English | 75 |
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National food safety standard -- Food contact paper and board materials and their products
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Standards related to (historical): GB 4806.8-2022
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GB 4806.8-2022: PDF in English GB 4806.8-2022
NATIONAL STANDARD OF THE
PEOPLE’S REPUBLIC OF CHINA
National Food Safety Standard - Food Contact Paper and
Board Materials and Their Products
ISSUED ON. JUNE 30, 2022
IMPLEMENTED ON. JUNE 30, 2023
Issued by. National Health Commission of the People's Republic of China;
State Administration for Market Regulation.
Table of Contents
Foreword... 3
1 Scope... 4
2 Terms and definitions... 4
3 Basic requirements... 4
4 Technical requirements... 4
5 Others... 7
Annex A Preparation of water extraction test solution... 8
Annex B Migration test pretreatment of filter paper for food contact... 10
Annex C Determination of 1,3-dichloro-2-propanol and 3-chloro-1,2-propanediol in
water extract... 11
National Food Safety Standard - Food Contact Paper and
Board Materials and Their Products
1 Scope
This document is applicable to food contact paper and board materials and their
products.
2 Terms and definitions
2.1 Food contact paper and board materials and their products
Under normal conditions of use, various paper and board materials and products that
have been or are expected to come into contact with food or food additives (hereinafter
referred to as food), or whose components may be transferred to food, including waxed
paper, silicone oiled paper and pulp molded products.
2.2 Pulp molded products
Products that use pulp as the main raw material, according to the shape required by the
product use, are made through shaping, molding, drying and other processes.
3 Basic requirements
Food contact paper and board materials and their products shall comply with the
provisions of GB 4806.1.
4 Technical requirements
4.1 Requirements for raw materials
4.1.1 The raw materials used in food contact paper and board materials and their
products shall not cause harm to human health. Fiber raw materials shall be mainly
plant fibers. The synthetic fiber raw materials contained shall meet the requirements of
the corresponding national food safety standards.
4.1.2 The use of additives in food contact paper and board materials and their products
shall comply with the provisions of GB 9685 and relevant announcements.
Annex A
Preparation of water extraction test solution
A.1 Principle
According to the intended use of food contact paper and board materials and their
products, use cold or hot water at a certain temperature to extract the cut or shredded
paper and board specimens. The obtained test solution is used for the determination of
the target analyte.
A.2 Reagents
Water.
NOTE. The water shall meet the requirements of the target analyte detection method.
A.3 Instruments and equipment
A.3.1 Balance. resolution is 0.01g.
A.3.2 Stoppered Erlenmeyer flask. 500mL.
A.3.3 Constant temperature water bath. accuracy is ± 2℃.
A.3.4 Filter device. equipped with G4 glass sand core funnel and 500mL filter bottle.
A.4 Specimen preparation
Cut or shred the obtained paper and board samples into small pieces of about 1cm2.The
specimen amount shall be at least the number of specimens required by the target
analyte determination method × 10g. Wear clean gloves when preparing samples to
avoid direct contact with the samples.
A.5 Extraction
A.5.1 Sample weighing
Weigh 10g of specimen (accurate to 0.01g). When the test result is expressed in mg/dm2,
it is necessary to measure the area of the paper and board corresponding to the 10g of
specimen taken. The sample weight can be increased as needed but shall not exceed
20g.
A.5.2 Hot water extraction
When the temperature of the product expected to contact food exceeds 40°C, place the
specimen in a stoppered conical flask. Add 200mL of boiling water. Cover with the
Annex C
Determination of 1,3-dichloro-2-propanol and 3-chloro-1,2-propanediol in water
extract
C.1 Principle
The aqueous extracts of paper and board samples prepared in accordance with Annex
A are purified by diatomaceous earth solid phase extraction cartridge. Use ethyl acetate
for elution. The eluate is concentrated and derivatized with
heptafluorobutyrylimidazole. Use gas chromatography-mass spectrometry to detect.
Use peak area internal standard method for quantification.
C.2 Reagents and materials
Unless otherwise stated, the reagents used are analytically pure; the water is grade one
water specified in GB/T 6682.
C.2.1 Reagents
C.2.1.1 Hexane (C6H14). chromatographically pure.
C.2.1.2 Ethyl acetate (C4H8O2).
C.2.1.3 Sodium chloride (NaCl).
C.2.1.4 Anhydrous sodium sulfate (Na2SO4).
C. 2.1.5 Heptafluorobutyrylimidazole (C7H3F7N2O, CAS No.. 32477-35-3).
C.2.2 Reagent preparation
Sodium chloride solution (20%, mass fraction). Weigh 20g of sodium chloride. Add
80mL of water to make sodium chloride completely dissolved. Mix well.
C.2.3 Standard product
C.2.3.1 1,3-dichloro-2-propanol (C3H6Cl2O, CAS No.. 96-23-1, English abbreviation.
1,3-DCP). The purity is ≥98%, or the reference material certified by the state and
granted the certificate of reference material.
C.2.3.2 3-chloro-1,2-propanediol (C3H7ClO2, CAS No.. 96-24-2, English abbreviation.
3-MCPD). The purity is ≥98%, or the reference material certified by the state and
granted the certificate of reference material.
C.2.3.3 1,3-dichloro-2-propanol-D5 (C3HCl2OD5, CAS No.. 1173020-20-6, English
abbreviation. 1,3-DCP-D5). The purity is ≥98%, or the reference material certified by
the state and granted the certificate of reference material.
C.2.3.4 3-chloro-1,2-propanediol-D5 (C3H2ClO2D5, CAS No.. 342611-01-2, English
abbreviation. 3-MCPD-D5). The purity is ≥98%, or the reference material certified by
the state and granted the certificate of reference material.
C.2.4 Preparation of standard solution
C.2.4.1 Chloropropanol mixed standard stock solution (1000mg/L). Respectively
weigh 50mg of 1,3-DCP (C.2.3.1) and 3-MCPD (C.2.3.2) standard products (accurate
to 0.1mg). Use ethyl acetate to dissolve. Transfer to a 50mL volumetric flask. Use ethyl
acetate to set volume to the scale. Seal and store at 0℃～4℃. Shelf life is 6 months.
C.2.4.2 Chloropropanol mixed standard intermediate solution 1 (10mg/L). Accurately
pipette 0.1mL of chloropropanol mixed standard stock solution (C.2.4.1) in a 10mL
volumetric flask. Use ethyl acetate to set volume to the scale. Seal and store at 0℃～
4℃. Shelf life is 3 months.
C.2.4.3 Chloropropanol mixed standard intermediate solution 2 (1.0mg/L). Pipette 1mL
of chloropropanol mixed standard intermediate solution 1 (C.2.4.2) in a 10mL
volumetric flask. Use ethyl acetate to set volume to the scale. Seal and store at 0℃～
4℃. Shelf life is 3 months.
C.2.4.4 Chloropropanol mixed internal-standard standard stock solution (1000mg/L).
Accurately and respectively pipette 5mg of 1,3-DCP-D5 (C.2.3.3) and 3-MCPD-D5
(C.2.3.4) standard products (accurate to 0.01mg). Use ethyl acetate to dissolve. Transfer
to a 5mL volumetric flask. Use ethyl acetate to set volume to the scale. Seal and store
at 0℃～4℃. Shelf life is 6 months.
C.2.4.5 Chloropropanol mixed internal-standard standard intermediate solution
(10mg/L). Accurately pipette 0.1mL of chloropropanol mixed internal-standard
standard stock solution (C.2.4.4) in a 10mL volumetric flask. Use ethyl acetate to set
volume to the scale. Seal and store at 0℃～4℃. Shelf life is 3 months.
C.2.4.6 Standard working solution. Take five 30mL test tubes. Respectively add
5.00mL of water. Accurately add 0.05mL of chloropropanol mixed standard
intermediate solution 2 (C.2.4.3) as well as 0.01mL, 0.025mL, 0.05mL, 0.1mL of
chloropropanol mixed standard intermediate solution 1 (C.2.4.2) in the test tubes.
Obtain standard working solutions of which the chloropropanol concentration is
10.0μg/L, 20.0μg/L, 50.0μg/L, 100μg/L, 200μg/L, respectively. Prepare the standard
working solution when it is needed. Take all out and pretreat them according to C.4.1.
C.3 Instruments and equipment
C.3.1 Gas chromatography-mass spectrometer with EI source.
C.3.2 Analytical balance. Resolution is 0.0001g and 0.00001g.
C.3.3 Micro syringes. 0.1mL, 1mL and 5mL.
C.3.4 Vortex mixer.
C.3.5 Nitrogen concentrator.
C.3.6 Nylon microporous membrane. Pore size is 0.22μm.
C.3.7 Diatomite solid phase extraction cartridge. Filler mass is 5g. Column capacity is
5mL.
C.3.8 Incubator or another thermostatic heater.
C.4 Analysis steps
C.4.1 Specimen pretreatment
C.4.1.1 Specimen purification
Accurately pipette 5.00mL of water extract prepared according to Annex A into a test
tube. Accurately add 0.05mL of chloropropanol mixed internal-standard standard
intermediate solution (C.2.4.5). Then add 1g of sodium chloride. Dissolve completely.
Use diatomaceous earth solid phase extraction cartridge. Equilibrate for 10min. Elute
with 18mL of ethyl acetate. Collect the eluate in a test tube for processing.
C.4.1.2 Eluent treatment
Add 4g of anhydrous sodium sulfate to a test tube. Place still for 10min. Use a funnel
to filter into another test tube. Concentrate to near dryness (about 0.5mL; do not
concentrate to complete dryness) in a 45°C water bath with nitrogen blowing. Then add
2mL of n-hexane to dissolve. Transfer to a 10mL colorimetric tube for derivatization.
C.4.1.3 Derivatization
Quickly add 0.04mL of heptafluorobutyrylimidazole to the solution. Immediately cover
with the glass stopper. Vortex for 30s. Incubate at 70°C for 30min. Take out and cool to
room temperature. Add 2mL of sodium chloride solution. Vortex for 1min. Set aside to
separate the aqueous phase and the n-hexane phase. Separate the n-hexane layer. Add
about 0.3g of anhydrous sodium sulfate for drying. Use 0.22μm nylon filter to filter for
testing.
C.4.2 Preparation of blank specimen
Without adding the sample, conduct water extraction test according to Annex A.
Pretreat it according to C.4.1.
C.4.3 Determination
C.4.3.1 Gas chromatography-mass spectrometry reference conditions
......
Source: Above contents are excerpted from the PDF -- translated/reviewed by: www.chinesestandard.net / Wayne Zheng et al.
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