GB 5009.93-2017 Translated English of Chinese Standard. GB5009.93-2017: National Food Safety Standard - Determination of selenium in foodshttps://www.chinesestandard.net, 11. feb. 2018 - 14 sider This Standard specifies the determination of selenium content in foods by hydride atomic fluorescence spectrometry, fluorescence spectrometry and inductively coupled plasma mass spectrometry. This Standard applies to the determination of selenium in all types of foods. |
Almindelige termer og sætninger
4,5-Benzo piaselenol accompanied by white accurately PIPETTE 1.00 acid mixed acid ADD 10 mL ADD 5 mL arithmetic mean calculation results retain clear and colorless colorless and accompanied conical flask content of selenium continue to HEAT COOL Cresol red determination of selenium electric hot plate excellent regent ferricyanide solution 100 fluorescence intensity hollow cathode lamp hydrochloric acid solution Hydrogen peroxide Hydroxylamine hydrochloride inductively coupled plasma intermediate solution 100 mass concentration mg/kg or mg/L Microwave digestion milliliters mixed acid 9 mL of hydrochloric mL of nitric mL of selenium mL of water mL volumetric flask nitric acid perchloric acid mixed PIPETTE 1.00 mL potassium ferricyanide solution selenium content Selenium standard intermediate selenium standard series selenium standard solution separatory funnel Sodium borohydride Sodium hydroxide solution 100 g/L solution 5 g/L solution 6 mol/L solution becomes clear spectrophotometry standard curve standard intermediate solution standard series solutions standard substance tube WEIGH 0.2 g white smoke