GB/T 5009.17-2003 Translated English of Chinese Standard. (GBT 5009.17-2003, GB/T5009.17-2003, GBT5009.17-2003): Determination of total mercury and organic-mercury in foodshttps://www.chinesestandard.net, 27.2.2015 - 25 sivua This standard specifies the method of determining the total mercury and organic-mercury in all kinds of foods. This standard is applicable to the determination of total mercury and organic-mercury in all kinds of foods. |
Sisältö
| 4 | |
Scope | 5 |
Instruments | 6 |
Result calculation | 9 |
Reagents | 10 |
Result calculation | 12 |
Instruments | 13 |
Result calculation | 15 |
Precision | 16 |
Instruments | 17 |
Result calculation | 19 |
Principle | 20 |
Instruments | 21 |
Result calculation | 22 |
Precision | 23 |
Yleiset termit ja lausekkeet
100mL volumetric flask 10mL of sulfuric 5mL of nitric absorb 1.0mL accordance with Heat according to Formula acid solution 1+9 Add 5mL Add several glass arithmetic mean avoid partial carbonization benzene conical flask content of mercury Determination of total digestion device digestion method Dilute with water dithizone Draw standard curve flask of digestion following operations Food Hygiene Supervision gas chromatograph glass beads Heat with low hydrochloric acid 1+11 hydrochloride solution 200g/L hydrogen peroxide hydroxylamine Inspection Institute Install condenser pipe low flame Measure mercuric chloride mercury in sample mercury mass mercury standard applied Mercury standard stock mercury vapour milliliter nitric acid nitric acid solution permanganate solution 50g/L Potassium borohydride potassium permanganate reagent blank rotating the conical sample digestive liquid separating funnel sodium hydroxide solution corresponds standard applied solutions standard series stannous chloride sulfhydryl cotton sulfuric acid Supervision and Inspection total mercury trichloromethane Vanadium pentoxide volume and mix volume of sample water to 100mL