GB 31604.51-2021 Translated English of Chinese Standard (GB31604.51-2021): National food safety standard - Food-contact materials and articles - Determination of migration of 1,4-butanediolwww.ChineseStandard.net, 3. sep. 2021 - 11 sider This standard specifies the method for determining the migration of 1,4-butanediol in food contact materials and products. This standard applies to the determination of migration of 1,4-butanediol, in plastics, coatings, food contact materials and products, which use adhesives and inks. |
Innhold
| 3 | |
Instrument and equipment | 5 |
Expression of analysis results | 7 |
Precision | 9 |
Appendix A Chromatogram of 14butanediol standard solution | 10 |
Vanlige uttrykk og setninger
1,4-butanediol in food 1,4-butanediol standard solution 25 mL volumetric according to formula accurately add 2.0 Accurately pipette 5.00 acetic acid solution acetone actual use situation alternative solvent 95 amount Analytical Appendix blank solution butanediol calculated according Centrifuge Chromatogram of 1,4-butanediol chromatographic column content of 1,4-butanediol corresponding detection limit equipment ethanol solution extraction flow rate food contact materials food simulant olive Gas chromatograph injection instrument reference conditions kilogram mg/kg kilograms kg layering Let it stand limit of quantification liter mg/L mark mass concentrations materials and products methanol to accurately method migration of 1,4-butanediol migration test milligrams per kilogram milligrams per liter mL volumetric flask mL/min oily food simulant pipette 0.20 mL prepare for determination Reagents sealing products Shake significant digits six 10 mL specific migration specimen soaking solution standard curve standard intermediate solution standard substance Standard working solution stored temperature test solution volume fraction volume or mass volume reach