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, 27/02/2015 - 25 من الصفحات 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. |
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الصفحة 5
... acid under high temperature, and in acid media, the mercury in samples is reduced to atomic state by potassium ... Sulfuric acid (GR). 3.4 Sulfuric acid + nitric acid + water (1+1+8): Measure 10mL of nitric acid and 10mL of ...
... acid under high temperature, and in acid media, the mercury in samples is reduced to atomic state by potassium ... Sulfuric acid (GR). 3.4 Sulfuric acid + nitric acid + water (1+1+8): Measure 10mL of nitric acid and 10mL of ...
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عبارات ومصطلحات مألوفة
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 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 independent determined results Inspection Institute Install condenser pipe low flame mass of sample Measure mercuric chloride mercury in sample mercury mass mercury standard applied mercury vapour methylmercury in sample milliliter nitric acid nitric acid solution Potassium borohydride potassium permanganate reagent blank Result calculation 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