GB 5009.277-2016 Translated English of Chinese Standard. (GB5009.277-2016): National food safety standard - Determination of sodium hydrogen diacetate in foodshttps://www.chinesestandard.net, 8. dec. 2018 - 11 sider This Standard specifies the liquid chromatography for the determination of sodium hydrogen diacetate in foods. This Standard applies to the determination of sodium hydrogen diacetate in dried tofu, dried tofu products, unprocessed grains, tapioca pearls, pastries, premade meat products, cooked meat products, cooked aquatic products (edible directly), solid compound seasonings and puffed foods. This Standard does not apply to the determination of seasonings, liquid compound seasonings and food added with acetic acid. |
Indhold
| 3 | |
Scope | 4 |
Apparatus | 5 |
Analytical procedures | 6 |
Expression of analytical results | 7 |
Precision | 8 |
Annex A Liquid chromatogram of sodium hydrogen diacetate standard solution | 9 |
Annex B Method for the determination of acetic acid background in foods | 10 |
Almindelige termer og sætninger
25 g accurate absorption liquid receiver accurate to 0.01 acetic acid background add water adjust the pH Apparatus reference conditions aqueous phase micropore background in sample Blender carry out liquid carry out steam chromatogram of sodium concentration of sodium content of acetic Determination of sodium diacetate in foods diacetate in sample diacetate standard solution diacetate standard substance Diammonium hydrogen phosphate direct extraction method distillation flask distillation method Accurately Figure A.1 filtering through aqueous final volume flask of 500 g/kg GB/T High performance liquid hydrogen diacetate standard limit of detection liquid chromatographic determination membranes of 0.45 methanol method Accurately absorb mg/mL micropore filter membranes mL is distilled mL of phosphoric mL of water phase micropore filter phosphoric acid solution place a volumetric Reagents sample solution silicone oil sodium hydrogen diacetate solution 1 mol/L specified in GB standard curve standard stock solution standard working solution steam distillation Stoppered plastic centrifugal volumetric flask