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Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB 1886.255-2016: National Food Safety Standard -- Food Additives -- Activated Carbon Status: Valid
Basic dataStandard ID: GB 1886.255-2016 (GB1886.255-2016)Description (Translated English): National Food Safety Standard -- Food Additives -- Activated Carbon Sector / Industry: National Standard Classification of Chinese Standard: X40 Word Count Estimation: 16,162 Date of Issue: 2016-08-31 Date of Implementation: 2017-01-01 Regulation (derived from): Announcement of the State Administration of Public Health and Family Planning 2016 No.11 Issuing agency(ies): National Health and Family Planning Commission of the People's Republic of China, State Food and Drug Administration GB 1886.255-2016: National Food Safety Standard -- Food Additives -- Activated Carbon---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.(Food safety national standard - Food additive - Activated carbon) National Standards of People's Republic of China National standards for food safety Food Additives Activated Carbon 2016-08-31 released 2017-01-01 Implementation People's Republic of China National Health and Family Planning Commission released National standards for food safety Food Additives Activated Carbon 1 ScopeThis standard applies to coal, lignite, peat and other non-wood materials as raw materials by physical or chemical method of food additives made of activated carbon (Non-wood activated carbon).2 molecular formula and relative molecular mass2.1 Molecular formula 2.2 Relative molecular mass 12.01 (according to.2011 international relative atomic mass)3 technical requirements3.1 sensory requirements Sensory requirements shall comply with the requirements of Table 1. Table 1 sensory requirements The project requires a test method Color black State powder or particles Take the appropriate amount of sample in the beaker and observe the color under natural light Ze and state 3.2 Physical and chemical indicators Physical and chemical indicators should be consistent with the provisions of Table 2. Table 2 Physical and chemical indicators Item Index Test Method Iodine Adsorption Value (in dry basis)/(mg/g) ≥ 400 GB/T 7702.7 Dry reduction, w /% in accordance with claim A.3 in Appendix A. Sulfate Ash, w /% Conformity to Assertion A.4 in Appendix A. Water soluble, w /% ≤ 4.0 Appendix A A.5 Cyanide through Test Appendix A, A.6 Table 2 (continued) Item Index Test Method Advanced Aromatic Hydrocarbons Pass Test Appendix A A.7 Arsenic (As)/(mg/kg) ≤ 3.0 Appendix A A.8 Lead (Pb)/(mg/kg) ≤ 5.0 Appendix A A.9 Heavy metals (Pb)/(mg/kg) ≤ 40 Appendix A A.10Appendix ATesting method A.1 General provisions The reagents and water used in this standard refer to the pure reagent and the tertiary water specified in GB/T 6682 when no other requirements are specified. Standard titration solution used in the test, the standard solution for the determination of impurities, preparations and products, without any other requirements, GB/T 601, GB/T 602, GB/T 603. The solution used in the test refers to water when it is not specified with the formulation of the solvent Solution. A.2 Identification test A.2.1 Reagents and materials A.2.1.1 Hydrochloric acid solution. 5 95. A.2.1.2 Iodine solution. Dissolve 14.0 g of iodine and 36.0 g of potassium iodide in 100 mL of water, add 3 drops of hydrochloric acid, dilute to 1000 mL with water, Shake well. A.2.2 Identification method Weigh about 3.0g of the sample, placed in 10mL hydrochloric acid solution containing iodine bottle, boil and keep for 30s, cooled to room temperature, plus 100mL iodine solution, plug the stopper, strong shaking 30s. With medium-speed qualitative filter paper filter, discard the original filtrate 20mL, the filtrate transferred to 50mL colorimetric tube to the scale, compared with the reference solution, the color should not be deeper than the reference solution. Reference solution. with a pipette to remove 10mL of iodine solution placed in 50mL colorimetric tube, diluted with water to the mark, shake. A.3 Determination of dry reduction A.3.1 Instruments and equipment Weighing bottle. Φ50mm × 30mm. A.3.2 Analysis steps Use a weighing bottle that has been dried at 120 ° C ± 2 ° C until the mass is constant. Weigh 1 g to 2 g of sample, accurate to 0.0002 g at 120 ° C ± Dried at 2 ° C for 4 h. After being allowed to stand in the desiccator and weighed. A.3.3 Calculation of results The mass fraction w1 of the drying reduction is calculated according to the formula (A.1) w1 = m1-m2 m x 100% (A.1) Where. m1 --- the quality of the sample and weighing bottle before drying, in grams (g); m2 --- the quality of the dried sample and weighing bottle, in grams (g); m --- the quality of the sample, in grams (g). The results of the test are based on the arithmetic mean of the parallel measurement results. The absolute difference between the two independent determinations obtained under repeatability conditions The ratio of the value to the arithmetic mean is not more than 2%. A.4 Determination of Sulfate Ash A.4.1 Reagents and materials A.4.1.1 Ammonium carbonate. A.4.1.2 Sulfuric acid. A.4.1.3 Sulfuric acid solution. 1 19. A.4.2 Instruments and equipment A.4.2.1 porcelain crucible. 30mL. A.4.2.2 High temperature furnace. can control the temperature at 800 ℃ ± 25 ℃. A.4.3 Analysis steps Approximately 0.5 g of the sample was weighed to 0.0002 g and placed in a porcelain crucible at a constant temperature of 800 ° C ± 25 ° C until a constant mass was added. Into a sufficient amount of sulfuric acid solution, infiltration of all samples. Placed on the hot plate slowly heated until the sample dry and completely carbonized, continue to heat straight To all samples volatilized or almost all of the carbon is oxidized and cooled to room temperature. Add 0.1mL sulfuric acid wetting residue, according to the above way to continue to add Heat until the residue and excess sulfuric acid are evaporated, in order to promote the evaporation of sulfuric acid in the addition of sulfuric acid residue to add a few pieces of ammonium carbonate. Continue on 800 ° C ± 25 ° C to a constant mass. A.4.4 Calculation of results The mass fraction w2 of the sulfate ash is calculated according to the formula (A.2) w2 = m3-m4 m x 100% (A.2) Where. m3 - the mass of the residue and crucible after burning, in grams (g); m4 --- crucible quality, in grams (g); m --- the quality of the sample, in grams (g). The results of the test are based on the arithmetic mean of the parallel measurement results. The absolute difference between the two independent determinations obtained under repeatability conditions The value is not greater than 0.5%. A.5 Determination of water-soluble substances A.5.1 Instruments and equipment A.5.1.1 Reflow condenser. A.5.1.2 electric heating oven. can control the temperature of 100 ℃ ± 2 ℃. A.5.2 Analysis steps Approximately 5 g of the sample that had passed through the 71 [mu] m test sieve was weighed to 0.01 g. Placed in a 250 mL with a reflux condenser and a native valve Dry the flask. Add 100.0 mL of water and several glass spheres, heated to reflux for 1 h. Slightly cool and then use medium speed qualitative filter paper Dry filter, discard the original 10mL filtrate. The filtrate (filtrate A) was cooled to room temperature. Remove the 25 mL filtrate with pipette And dried in a vial at 100 ° C ± 2 ° C for 1 h. The evaporated dish was placed on a water bath and evaporated to the filtrate to dryness, not in the evaporation process The solution should be boiled. Dried at 100 ° C ± 2 ° C for 1 h and weighed. Retention filtrate A is used for the determination of arsenic, lead and heavy metals. A.5.3 Calculation of results The mass fraction of water-soluble matter w3 is calculated according to formula (A.3) w3 = m5-m6 m × × 100% (A.3) Where. m5 --- the quality of the residue and evaporating dish after drying, in grams (g); m6 --- the quality of the evaporative dish, in grams (g); m --- the quality of the sample, in grams (g); 25 --- Remove the volume of the sample solution in milliliters (mL); 100 - The volume of water added in milliliters (mL). The results of the test are based on the arithmetic mean of the parallel measurement results. The absolute difference between the two independent determinations obtained under repeatability conditions The value is not greater than 0.3%. A.6 Determination of cyanide A.6.1 Reagents and materials A.6.1.1 tartaric acid. A.6.1.2 Sodium hydroxide solution. 10 g/L. A.6.1.3 Hydrochloric acid solution. 1 1. A.6.1.4 ferrous sulfate solution. 50 g/L. A.6.1.5 Ferric chloride solution. 100 g/L. A.6.2 Analysis steps Approximately 5 g of the sample that had passed through the 71 [mu] m test sieve was weighed to 0.01 g. Placed in a round bottom distillate flask with a branch, and added 50 mL of water, 2 g of tartaric acid, gently rotated, the sample was completely wetted and the tartaric acid was dissolved and the flask was heated and distilled. Distillate with a rubber hose In a graduated cylinder containing 12 mL of sodium hydroxide solution, when the distillate was 25 mL, the distillation was stopped and the rubber tube was immediately pulled out, and the distillate Diluted to 50mL, shake. Absorb 25mL of the solution into the beaker, add 1mL ferrous sulfate solution, heated to near boiling, cooling, add 1mL Hydrochloric acid solution and 2 drops of ferric chloride solution, and then observe whether the solution appears Prussian blue compounds. If there is no Prussian blue, then pass test. A.7 Determination of Advanced Aromatic Hydrocarbons A.7.1 Reagents and materials A.7.1.1 Cyclohexane. A.7.1.2 Quinine sulfate standard solution. 1mL solution containing quinine sulfate [(C20H24N2O2) 2 · H2SO4] 0.1μg. Weigh 1.048g of quinine sulfate [(C20H24N2O2) 2 · H2SO4 · 2H2O], placed in a 1000mL volumetric flask, dissolved in sulfuric acid Solution (3 1000), diluted with sulfuric acid solution (3 1000) to the scale, shake. The solution is quinine quinine standard solution Ⅰ, 1mL dissolved Liquid containing quinine sulfate [(C20H24N2O2) 2 · H2SO4] 1mg. Remove 1 mL of quinine sulphate standard solution I with a pipette, place in a 100 mL volumetric flask, dilute with sulfuric acid solution (3 1000) Scale, shake. The solution is quasi-sulfuric acid standard solution Ⅱ, 1mL solution containing quinine sulfate [(C20H24N2O2) 2 · H2SO4] 0.01 mg. Remove 1 mL of quinine sulphate standard solution II with a pipette, place in a 100 mL volumetric flask, dilute with sulfuric acid solution (3 1000) Scale, shake. The solution is the standard solution of quinine sulfate, 1mL solution containing quinine sulfate [(C20H24N2O2) 2 · H2SO4] 0.1μg, the solution is now ready for use. A.7.2 Instruments and equipment A.7.2.1 Cable extractor. The device diagram is shown in Figure A.1. Description. 1 --- condenser; 2 - cable extractor; 3 --- filter paper bag; 4 --- flask (50mL). Figure A.1 Cable extractor device diagram A.7.2.2 Colorimetric tubes. 10 mL. A.7.2.3 Test sieve. 71 μm. A.7.3 Analysis steps A sample of 1.00 g ± 0.01 g, which had passed through a 71 μm test sieve, was weighed and wrapped in clean filter paper and placed in a cable extractor. The flask was charged with 12.0 mL of cyclohexane and the device was connected as shown in Figure A.1. The flask was placed in a 90 ° C to 95 ° C water bath for 2 h. will The extract is cooled and transferred to the colorimetric tube. The standard solution was prepared by placing 10 mL of the standard solution of quinine sulfate in a colorimetric tube. In the UV lamp (365nm) observed, the sample solution shows the color or fluorescence does not exceed the standard solution for the test. A.8 Determination of arsenic (As) A.8.1 Reagents and materials A.8.1.1 Pyridine. A.8.1.2 isopropanol. A.8.1.3 Arsenic-free metal zinc. A.8.1.4 sulfuric acid solution (1 4). measure 100mL sulfuric acid, slowly add water, diluted with water to 500mL, mix, use after cooling. A.8.1.5 sulfuric acid solution (1mol/L). the amount of 28mL sulfuric acid, slowly add water, diluted with water to 500mL. A.8.1.6 Sodium hydroxide solution (200 g/L). Weigh 20 g of sodium hydroxide dissolved in water and set to 100 mL. A.8.1.7 Potassium iodide solution (150g/L). Weigh 15g potassium iodide, dissolve with water and dilute to 100mL. Stored in a brown bottle (before use) Preparation). A.8.1.8 Stannous chloride solution (400 g/L). 20 g of stannous chloride (SnCl2 · 2H2O) was weighed and dissolved in 50 mL of hydrochloric acid solution (1 1). A.8.1.9 lead acetate cotton. the absorbent cotton dip in lead acetate solution (100g/L), 2h after the removal of dry. A.8.1.10 Absorbent solution. 0.50 g of silver diethyldithiocarbamate was weighed and ground with pyridine and diluted with pyridine to 100 mL. After standing, filter in a brown bottle and store it in a refrigerator. A.8.1.11 Arsenic standard stock solution (0.1 mg/mL). Weigh 0.1320 g of dried arsenic trioxide in a sulfuric acid dryer to constant weight (As2O3), dissolved in 5mL sodium hydroxide solution. After dissolving, add 25mL sulfuric acid solution (1mol/L), into the 1000mL capacity Bottle, add fresh boiled water to dilute to the mark. A.8.1.12 arsenic standard use of liquid (1μg/mL). before taking 1.0mL arsenic standard stock solution, add 1mL sulfuric acid solution (1mol/L) in 100mL volumetric flask, add fresh boiled water to dilute to the mark. A.8.2 Instruments and equipment A.8.2.1 Spectrophotometer. A.8.2.2 Arsenic measurement device. with GB 5009.76 silver diethyldithiocarbamate colorimetric method. A.8.3 Analysis steps Absorb 20mL of filtrate A and 3mL arsenic standard use of liquid (including 3μgAs), were placed in arsenic vial A, add water to 35mL. To each of the bottles was added 20 mL of sulfuric acid solution (14), 2 mL of potassium iodide solution, 0.5 mL of stannous chloride solution and 1 mL of isopropanol, Mix and place for 30min. Add 3g of arsenic-free metal zinc, immediately plugged with lead acetate cotton lead pipe B, and the tube B tip inserted Into the absorption tube containing 3.0 mL of absorption liquid, at room temperature for 45min, remove the absorption tube C, and add the absorbed volume to the absorption liquid 3.0mL. By visual color or with a 1cm cuvette, at 540nm wavelength, measured absorbance of the absorbance. The color of the filtrate A absorbs the liquid Or absorbance shall not exceed the arsenic standard absorption liquid color or absorbance. A.9 Determination of lead (Pb) Transfer 20 mL of the retained filtrate A as the test solution. The following is measured according to GB 5009.75. A.10 Determination of heavy metals (Pb) Transfer 20 mL of the retained filtrate A as the test solution. 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