GB 31604.18-2016 PDF EnglishUS$70.00 · In stock · Download in 9 seconds
GB 31604.18-2016: National food safety standard - Food contact materials and articles - Determination of migration of acrylamide Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB 31604.18-2016: National food safety standard - Food contact materials and articles - Determination of migration of acrylamide---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GB31604.18-2016 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA National food safety standard - Food contact materials and articles - Determination of migration of acrylamide Issued on: OCTOBER 19, 2016 Implemented on: APRIL 19, 2017 Issued by. National Health and Family Planning Commission of the PRC Table of ContentsForeword . 3 1 Scope .. 4 2 Principle.. 4 3 Reagents and materials .. 4 4 Instruments and equipment . 5 5 Analytical procedures . 5 6 Expression of analysis results .. 7 7 Precision. 7 8 Others . 8 Appendix A Standard solution chromatogram . 9 Foreword This standard replaces GB/T 23296.9-2009 “Food contact materials - Polymer - Determination of acrylamide in food simulants - High performance liquid chromatography”. As compared with GB/T 23296.9-2009, the main changes of this standard are as follows. - CHANGE the standard name into “National food safety standard - Food contact materials and articles - Determination of migration of acrylamide”; - ADD the scope of application; - MODIFY the food simulant preparation; - MODIFY the processing of oil-based food simulant test solutions. National food safety standard - Food contact materials and articles - Determination of migration of acrylamide1 ScopeThis standard specifies the determination of the migration of acrylamide in food contact materials and articles. This standard applies to the use of liquid chromatography for the detection of acrylamide migration in food contact materials and articles. 2 Principle The food simulants of food contact materials and articles are tested by liquid chromatography, wherein the water-based, acidic, and alcoholic food simulants are directly injected, the oil-based food simulants are injected after water extraction and separated through high-performance liquid chromatography. (The column is an ion exclusion column), detected by a UV detector, and it is quantified using the external standard peak area method.3 Reagents and materialsUnless otherwise stated, the reagents used in this method are of analytical grade, and the water is grade I water as specified in GB/T 6682. Containers and transfer apparatus used in the test shall avoid the use of plastic materials. 3.1 Reagents 3.1.1 Water-based, acidic, alcoholic, oil-based food simulants. The reagents used shall be in accordance with the provisions of GB 31604.1. 3.1.2 Acetonitrile (C2H3N). Chromatographically pure. 3.1.3 Methanol (CH3OH). Chromatographically pure. 3.1.4 Sulfuric acid (H2SO4). Excellent grade. 3.2 Reagent preparation 3.2.1 Water-based, acidic, alcohol-based, oil-based food simulants. In accordance with the expected use of the sample to be tested and the conditions 5.1.3 Preparation of oil-based food simulant test solution WEIGH 10 g (accurate to 0.01 g) of oil-based food simulant test solution to the colorimetric tube, ADD 10.0 mL of water, SHAKE it vigorously for 1 min, LET it be standing for stratification. TAKE the lower layer aqueous solution, MAKE it pass through a 0.2 μm filter membrane for measurement. 5.1.4 Preparation of blank solutions 5.1.4.1 Water-based, acidic, alcoholic food simulant blank solution PIPETTE food simulant that had not been contacted with the sample, FILTER it through a 0.2 μm microporous membrane for measurement. 5.1.4.2 Oil-based food simulant blank solution PIPETTE 10 g (accurate to 0.01 g) of the food simulant that has not been contacted with the sample, OPERATE in accordance with 5.1.3. 5.1.5 Water-based, acidic, alcoholic food simulant standard working solution Accurately PIPETTE 0.00 mL, 0.03 mL, 0.05 mL, 0.08 mL, 0.1 mL, 0.5 mL of acrylamide standard intermediate solution in a 10 mL volumetric flask, USE the food simulant that has not been in contact with the sample to make its volume reach to the mark, to obtain the standard working solution which has a concentration of acrylamide of 0.00 mg/L, 0.03 mg/L, 0.05 mg/L, 0.08 mg/L, 0.10 mg/L, 0.50 mg/L. In the same manner, respectively USE the corresponding water-based, acidic, and alcoholic food simulants to prepare the same concentration series of acrylamide standard working solutions. 5.1.6 Oil-based food simulant standard working solution Respectively WEIGH 10 g (accurate to 0.01 g) of oil-based food simulants into 5 colorimetric tubes, respectively PIPETTE 0.00 mL, 0.03 mL, 0.05 mL, 0.08 mL, 0.1 mL and 0.5 mL of acrylamide standard intermediate solution (10 mg/L) in the colorimetric tube, MIX it uniformly, ADD 10.0 mL of water, SHAKE it vigorously for 1 min, LET it be standing for stratification. The acrylamide concentration of the obtained standard working solution is respectively 0.00 mg/kg, 0.03 mg/kg, 0.05 mg/kg, 0.08 mg/kg, 0.10 mg/kg, and 0.50 mg/kg. TAKE the lower layer aqueous solution, MAKE it pass through a 0.2 μm filter membrane for measurement. 5.2 Determination 5.2.1 Liquid chromatography conditions a) Column. Venusil CIS, ion exclusion column, column length 250 mm, inner ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB 31604.18-2016 be delivered?Answer: The full copy PDF of English version of GB 31604.18-2016 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB 31604.18-2016_English with my colleagues?Answer: Yes. The purchased PDF of GB 31604.18-2016_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. 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