The QB 2238 "Fortified Nutrient Salt" series of standards is divided into five items, and this standard is the third item in the QB 2238 series of standards. This standard was first issued in 1996, and this is the first revision. From the date of implementation, this standard replaces the selenium-fortified nutrient salt part of the light industry standard QB2 238-1996 "Fortified Nutrient Salt" issued by the former China Light Industry General Association. This standard specifies the requirements, test methods, inspection rules and marking, packaging, transportation and storage of selenium-fortified nutrient salts. This standard applies to fortified nutrient salts with edible salt as the carrier and selenium nutrient enhancers added. QB 2238.3-2005 Fortified nutrient salts Selenium-fortified nutrient salts QB2238.3-2005 Standard download decompression password: www.bzxz.net

ECS 67.220. 20
Classification number: X38
Registration number: 16390-2005
Light Industry Standard of the People's Republic of China
QB 2238.3—2005
Generation QB2238-1996
Fortified nutrient salt
Fortified nutrient salt-Hortificd nutrient salt with seleniutm2005-07-26 Issued
National Development and Reform Commission of the People's Republic of China 2006-01-01 Implementation
QB2238 "Fortified Nutrient Salt" series is divided into five parts: QR2238.1 Fortified nutrient salt: Fortified nutrient salt-Fortified nutrient salt with zinc:
-QB 2235.2
Strengthen the nutritional salt of the salt:
-QB2238.3
-QF2238.4 Industrialized salt:-QH2238.S Write the nutritional salt of the salt. This standard is the first item of the QB2238 series of standards. Chapter 3 of this standard is mandatory, and the rest are recommended. The standard is proposed by the China Federation of Industry and Commerce. The National Sea Salt Standardization Center: This standard is drafted by the National Sea Salt Standardization Center, the National Mineral Standardization Center, and the Hangzhou Sea Salt Production Center. The main initiators of this standard are Chen Mijuan, Pan Yue, Zhang Pin, Wei Jie, Mo Xiuzhi, Wei Yu. This standard was first issued in 1996. This is the first revision of this standard. It is the light industry standard Q2238-1% fortified nutrient salt fortified general nutrient salt.
Fortified nutrient salt Selenium fortified nutrient salt
QB2238.3-2005
This standard specifies the requirements, test methods, inspection regulations and signs of selenium fortified nutrient salt, packaging, transportation and storage: This standard uses edible materials as carriers, such as nutrient standardization agents. 2 Normative reference documents
The following documents! The clauses of the technical standard are made by reference to the non-standard documents. For documents with a later date, the revised version (not including the content of the revised version) or the revised version after the date of publication shall not apply to this standard. However, the customer who reaches an agreement based on this standard may use the newer versions of these documents. For documents with no date, the newer versions shall not apply to this standard. GB2760 Standard for Degree-Adding Products
GB/T6682 Specification for Water Use in Rooms and Test and Supervision and Emulsions
GB/T6688-2001 General Rules for Pre-Empty Degree-Adding Products
GB/T5618-2001 Sampling Method for Major Products GBT1305.1 General Test Method for Salt Making Industry - Determination of Particle Size GB/T13025.3 General Test Method for Salt Making Industry - Determination of Water Content GB/T13025.4 General Test Method for Salt Making Industry - Determination of Water-Insoluble Matter GB/T13025.5 General Test Method for Salt Making Industry - Determination of Chlorine Ion GB/T13025.7 General Test Method for Salt Making Industry - Determination of Chlorine Ion GH/13025.9 General test method for salt making industry Determination of lead ions (photometric method) GB/135.13 Test method for salt making industry Determination of lead ions (atomic absorption spectrophotometric method) GB14880 Standard for use of food nutrient fortifiers General Administration of Quality Supervision, Inspection and Quarantine No. 75 (2005) 3 Requirements
3.1 Sensory indicators
White, no peculiar smell, no visible debris,
3.2 Physical and chemical indicators
Should comply with the requirements of Table 1.
Sodium hyaluronate in terms of 0g
Water content (drying loss pot)/(/product g)
Water insoluble matter/(E/1(K))
Particle size (1.00mm9 above)//g/100g) Index
QB2238.3—2005
f: in terms of ei >/tmg/hg)
Please use i/mg/kg
Name (calculated as/(a/kg)
Review: A calculated as: /: mg.kg
3.3 Net content
Table 1 (continued)
irKNrKa
2℃··50
The net content of the product package shall comply with the requirements of the General Administration of Quality Supervision, Inspection and Quarantine No. 5 (2005), 4 Food Additives and Nutritional Fortification 4.1 The natural nutritional supplements in food shall be determined in accordance with the relevant standards of the industry. 4.2 The quality and dosage of food additives and nutritional fortifiers shall be in accordance with the provisions of 27) GR/T 8148. 5 Test methods: There is no description. In the analysis, use reagents confirmed as analytically pure. 5.1 Sensory indicators: The sample shall be prepared according to the provisions of G/T [3025.[. 5.2 Determination of moisture (baking loss): GR/T 13025.3 5.4 Water-insoluble matter shall be determined according to G/T 13025.4.
5.5 Sodium oxide
5,51 Sodium ions
CB/T13025.S
5.5.2 Calculation of the amount of sodium hydroxide
The total amount of sodium hydroxide, expressed in grams per gram (g/1), is calculated by the formula: NaCls/lgC-(yig!x:.h4s5
Where:
5.6 Wine
The amount of sodium hydroxide in the presence of chlorine is the amount of oxidized water
5.6.1 Spectrophotometric method
5.6.1.1 Principle
Under strong acid conditions, the primary lysine reacts with selenium to form a yellow ion, which is extracted with methyl alcohol and the light intensity is determined by observing the wine content. 5.6.1.2 Instruments and equipment
5.6.1.2. 1
Stock Secret Treasure Appraisal Equipment
5.6, 2.2 No. Light Calculation.
5.6.1. 3 Test Mixture and Solution
5.6. 1.3.13.3-Azobenzene biphenyl gel, 5/LQB2238.3-20X05
Weigh 3.3 dibasic NH3HCH (I, 0.50: in a cup, add 0.1 mol/Lanjun) 10U stirring rate to dissolve, Jiang Bo, use time: 5.6.13.2 Standard preparation liquid: 0.00mml weigh two acid (ac0) 0.21, 0.000: water soluble tablets transferred into 10 volume, water to dilute, select:
5.6.1.3.3 Standard preparation: 5.0/mL Feipo handle standard clear liquid (5.6.1.3.2>2 5.00L butylene 500 mg/ml, add ethylene glycol 1 ... 3.7 Dispatch: rate
before -. Di-tetra-acid monosodium solution 5U/L) 50m: when acid reduction amine drop liquid 1g/.50mT., limit (0.2g/: 2.5ml., add water to keep light to 500mL: proof spoon for standby. 5.6.1.3.8 to oxidation ((1R/T629) Taolang: 100)g/L: 5.1.3.9 oxidation needle: GT1266> drop liquid: 1g/5.1.3 .0午GB.T6347.
5.6.1.4 Analysis steps
5.6.1.4.1 Drawing of standard curve
Absorb or add standard solution (5.6.1.3.3). 1.0.2.0.3.0.4.0m in a 50ml colorimetric tube without support, separate into A chloride solution (10m/,) 10.0m, sea level (5.0.1.3.7>20m.≤to 100/1.) or nitric acid 2-.7 (with p[0.5.-5.0 red test required: solution amount color, yuan person 3,3. Add trimelamine solution (5g/.5ml auxiliary, place in a flask for 20min. Oxidize with oxygen: 10n%/1.) and adjust pH to about 5.4~7.0. pH: 5.4-7.0. Precision pH: 5.4-7.0. Detection: 10ml water until t: t, 2, 5min. Transfer without separation, put into 1.0cm thick buffer, use toluene as reference, return to 430℃ and determine the light content: take the sample as the horizontal standard, and the total absorbance as the standard: Test standard
5.6. 1.4.2 Determination of samples
Average sample collection: 25.0%: x 2.5mT, volume, water group system, draw 10.0 drops of solution in 50 colorimetric tubes, 20ml. Active reagent: 5.6.1.4. 5.6.1.5 Calculation of results The measured sample absorbance is obtained from the standard line and calculated according to formula 2): Seil, mg/kg). The obtained amount is in micrograms. The unit is grams. 5.6.1.6 If the error and the approximate value of the second half of the determination are not greater than 0, the average of the two parallel determinations is taken as the determination result. QB2238.3—2005 5.6.2 Spectrophotometric method 5.6.2. 1. Removal of SeH from the salt solution with sodium thiocyanate, and then put it into a hot quartz cell for atomic absorption spectrophotometry. 5.6.2.2. Instruments and equipment 5.6.2.2.1. Cathode lamp: wavelength 196.0nm, wavelength 2.0nm 5.6.2.2.2. Flow type injection pen chemistry generator: 5.6.2.2.3. Carrier gas: carrier gas, acid gas: 5.6.2.3. Reagents and solutions 5.6.2.3.1. Standard feed solution; 0.100mg/ml-1 5.6.1,3.2 5.6.2. 3.2 Phosphorus standard working solution: 1.0/mL Pipette 1.00ml of standard stock solution (5.6.2.3.1), add 1mL to a bottle, adjust to the mark, and add: 5.6.2.3.3 Hydrochloric acid solution; 6mol/L.
5.6.2.3.4 Sodium hydroxide solution, 10g/
Weigh 1.0% sodium hydroxide solution (NaB) and mix with 100% sodium hydride solution (3), store in refrigerator, and keep for future use. 5.6.2.3.5 Hydrochloric acid carrier solution: 0.01mol/L hydrochloric acid, add 500ml water, and mix well.
5.6.2.4 Analysis steps
5.6. 2. 4. 1 Sampling preparation
Take 25g of sample and 1001g of fine powder: dissolve in real water, transfer to 25um, put into a bottle, add dilution to the scale, shake. 5.6.2.4.2 Drawing of standard curve
Absorption drive acid <5.6.2.3.38.0ml.! 25mL colorimetric tube, use a micropipette to add 0, 1mL, 200, 30uL of standard working solution (5.6.2.3.2) in sequence, add water, mix well, and measure the total absorbance respectively, with the total amount as the horizontal coordinate and the corresponding absorbance as the coordinate. Establish a one-variable linear regression equation based on the system. 5.6.2.4.3 Sample determination
Pipette 200μL of sample solution (5.6.2.4.1) into 25mL colorimetric solution, add 8.0mL of hydrochloric acid (5.6.2.3.3), add water to dilute to the scale, 3, measure its absorbance
5.6.2.5 Calculation and expression of results
The measured sample absorbance should be obtained from the standard curve, or the corresponding amount should be obtained from the linear regression equation, and calculated using formula 3>. tt|| The absolute value of the difference between the two parallel measurements within the daily allowable error should not be greater than 0.5 m/s: The half-mean of the two parallel measurements is taken as the measured value. 5.7 Phosphorus and iodide ions
Determined according to GB/T13025.7:
5.8 Cobalt ions || tt||Determine according to GB/18962 or GB/T13025.9, 5.9 ion
G is determined by GB/T13025.13
6 Inspection rules
6.1 Inspection classification
6.1.1 Type inspection
QB2238.3—2005
Type inspection of selenium salt in chemical industry This standard covers a large number of items, especially when it is very important, at least once every six months. Type inspection should be carried out in the following circumstances.
Company) When the raw materials, process and method are changed significantly, which may affect the product quality: 1) When the product is long-term production, the product quality is greatly different from the previous production test result; 2) When the quality inspection machine is required, the inspection items are heat, temperature, humidity, sodium, particle size and iodine. 3) Sampling method
6.2.1 The products are produced by the same process and the standard products are delivered at one time as a batch. The sample taken shall be in accordance with GB/8618-2001 3.4.4: 22. Take the sample of the batch and divide it into four parts, and the quantity shall not be less than 50. The sample shall be packed and disinfected before delivery, and the requirements of the second inspection and review shall be met. 6.3 || tt || 6.3.! If the inspection results do not meet the requirements of the standard, we can collect samples of the products, and re-test the items that do not meet the technical standards. If the re-test does not meet the technical standards, the product will be deemed as non-compliant. 6.3.2 Product quality control and monitoring: When the supply and demand parties have a conflict over the product quality, the supply and demand parties shall jointly entrust the unit to conduct an inspection in accordance with this standard. 6.4 Net weight
The net weight inspection of product packaging shall comply with the requirements of the National Quality Inspection and Registration Administration No. 75 (2005).7 Marking, packaging, transportation, storage
7.1 This product shall be packed in bags or bottles within 5 months. The packaging materials shall comply with the relevant health standards and relevant regulations: the product packaging shall comply with the requirements of the EGH standard.
7.2 The outer packaging of the product shall be made of paper or polypropylene plastic. , the product must have a product certificate: the outer packaging should indicate the product name, specifications, number, manufacturer name and address: 7.3 The transportation should be clean and dry, and should not be packed with energy-conducting products. Once transported, the finished product will be damaged and the purchase center will be responsible.
.4 Strengthen the storage of salt-sensitive bacteria, the warehouse should be ventilated to prevent rain and moisture, and should not be stored together with energy-contaminated goods.0/mL Pipette 1.00ml of standard stock solution (5.6.2.3.1), add 1mL to a bottle, adjust to the mark, and add: 5.6.2.3.3 Hydrochloric acid solution: 6mol/L.
5.6.2.3.4 Sodium hydroxide solution, weigh 10g/
, mix 1.0% sodium hydroxide solution (NaB) with 100% sodium hydride solution (3), store in refrigerator, and store for use. 5.6.2.3.5 Hydrochloric acid carrier solution: 0.01mol/L, add 500ml water, and mix well.
5.6.2.4 Analysis steps
5.6. 2. 4. 1 Sampling preparation
Take 25g of sample and 1001g of fine powder: dissolve in real water, transfer to 25um, put into a bottle, add dilution to the scale, shake. 5.6.2.4.2 Drawing of standard curve
Absorption drive acid <5.6.2.3.38.0ml.! 25mL colorimetric tube, use a micropipette to add 0, 1mL, 200, 30uL of standard working solution (5.6.2.3.2) in sequence, add water, mix well, and measure the total absorbance respectively, with the total amount as the horizontal coordinate and the corresponding absorbance as the coordinate. Establish a one-variable linear regression equation based on the system. 5.6.2.4.3 Sample determination
Pipette 200μL of sample solution (5.6.2.4.1) into 25mL colorimetric solution, add 8.0mL of hydrochloric acid (5.6.2.3.3), add water to dilute to the scale, 3, measure its absorbance
5.6.2.5 Calculation and expression of results
The measured sample absorbance should be obtained from the standard curve, or the corresponding amount should be obtained from the linear regression equation, and calculated using formula 3>. tt|| The absolute value of the difference between the two parallel measurements within the daily allowable error should not be greater than 0.5 m/s: The half-mean of the two parallel measurements is taken as the measured value. 5.7 Phosphorus and iodide ions bzxZ.net
Determined according to GB/T13025.7:
5.8 Cobalt ions || tt||Determine according to GB/18962 or GB/T13025.9, 5.9 ion
G is determined by GB/T13025.13
6 Inspection rules
6.1 Inspection classification
6.1.1 Type inspection
QB2238.3—2005
Type inspection of selenium salt in chemical industry This standard covers a large number of items, especially when it is very important, at least once every six months. Type inspection should be carried out in the following circumstances.
Company) When the raw materials, process and method are changed significantly, which may affect the product quality: 1) When the product is long-term production, the product quality is greatly different from the previous production test result; 2) When the quality inspection machine is required, the inspection items are heat, temperature, humidity, sodium, particle size and iodine. 3) Sampling method
6.2.1 The products are produced by the same process and the standard products are delivered at one time as a batch. The sample taken shall be in accordance with GB/8618-2001 3.4.4: 22. Take the sample of the batch and divide it into four parts, and the quantity shall not be less than 50. The sample shall be packed and disinfected before delivery, and the requirements of the second inspection and review shall be met. 6.3 || tt || 6.3.! If the inspection results do not meet the requirements of the standard, we can collect samples of the products, and re-test the items that do not meet the technical standards. If the re-test does not meet the technical standards, the product will be deemed as non-compliant. 6.3.2 Product quality control and monitoring: When the supply and demand parties have a conflict over the product quality, the supply and demand parties shall jointly entrust the unit to conduct an inspection in accordance with this standard. 6.4 Net weight
The net weight inspection of product packaging shall comply with the requirements of the National Quality Inspection and Registration Administration No. 75 (2005).7 Marking, packaging, transportation, storage
7.1 This product shall be packed in bags or bottles within 5 months. The packaging materials shall comply with the relevant health standards and relevant regulations: the product packaging shall comply with the requirements of the EGH standard.
7.2 The outer packaging of the product shall be made of paper or polypropylene plastic. , the product must have a product certificate: the outer packaging should indicate the product name, specifications, number, manufacturer name and address: 7.3 The transportation should be clean and dry, and should not be packed with energy-conducting products. Once transported, the finished product will be damaged and the purchase center will be responsible.
.4 Strengthen the storage of salt-sensitive bacteria, the warehouse should be ventilated to prevent rain and moisture, and should not be stored together with energy-contaminated goods.0/mL Pipette 1.00ml of standard stock solution (5.6.2.3.1), add 1mL to a bottle, adjust to the mark, add: 5.6.2.3.3 Hydrochloric acid solution: 6mol/L.
5.6.2.3.4 Sodium hydroxide solution, weigh 10g/
, mix 1.0% sodium hydroxide solution (NaB) with 100% sodium hydride solution (3), store in refrigerator, and store for use. 5.6.2.3.5 Hydrochloric acid carrier solution: 0.01mol/L, add 500ml water, mix well.
5.6.2.4 Analysis steps
5.6. 2. 4. 1 Sampling preparation
Take 25g of sample and 1001g of fine powder: dissolve in real water, transfer to 25um, put into a bottle, add dilution to the scale, shake. 5.6.2.4.2 Drawing of standard curve
Absorption drive acid <5.6.2.3.38.0ml.! 25mL colorimetric tube, use a micropipette to add 0, 1mL, 200, 30uL of standard working solution (5.6.2.3.2) in sequence, add water, mix well, and measure the total absorbance respectively, with the total amount as the horizontal coordinate and the corresponding absorbance as the coordinate. Establish a one-variable linear regression equation based on the system. 5.6.2.4.3 Sample determination
Pipette 200μL of sample solution (5.6.2.4.1) into 25mL colorimetric solution, add 8.0mL of hydrochloric acid (5.6.2.3.3), add water to dilute to the scale, 3, measure its absorbance
5.6.2.5 Calculation and expression of results
The measured sample absorbance should be obtained from the standard curve, or the corresponding amount should be obtained from the linear regression equation, and calculated using formula 3>. tt|| The absolute value of the difference between the two parallel measurements within the daily allowable error should not be greater than 0.5 m/s: The half-mean of the two parallel measurements is taken as the measured value. 5.7 Phosphorus and iodide ions
Determined according to GB/T13025.7:
5.8 Cobalt ions || tt||Determine according to GB/18962 or GB/T13025.9, 5.9 ion
G is determined by GB/T13025.13
6 Inspection rules
6.1 Inspection classification
6.1.1 Type inspection
QB2238.3—2005
Type inspection of selenium salt in chemical industry This standard covers a large number of items, especially when it is very important, at least once every six months. Type inspection should be carried out in the following circumstances.
Company) When the raw materials, process and method are changed significantly, which may affect the product quality: 1) When the product is long-term production, the product quality is greatly different from the previous production test result; 2) When the quality inspection machine is required, the inspection items are heat, temperature, humidity, sodium, particle size and iodine. 3) Sampling method
6.2.1 The products are produced by the same process and the standard products are delivered at one time as a batch. The sample taken shall be in accordance with GB/8618-2001 3.4.4: 22. Take the sample of the batch and divide it into four parts, and the quantity shall not be less than 50. The sample shall be packed and disinfected before delivery, and the requirements of the second inspection and review shall be met. 6.3 || tt || 6.3.! If the inspection results do not meet the requirements of the standard, we can collect samples of the products, and re-test the items that do not meet the technical standards. If the re-test does not meet the technical standards, the product will be deemed as non-compliant. 6.3.2 Product quality control and monitoring: When the supply and demand parties have a conflict over the product quality, the supply and demand parties shall jointly entrust the unit to conduct an inspection in accordance with this standard. 6.4 Net weight
The net weight inspection of product packaging shall comply with the requirements of the National Quality Inspection and Registration Administration No. 75 (2005).7 Marking, packaging, transportation, storage
7.1 This product shall be packed in bags or bottles within 5 months. The packaging materials shall comply with the relevant health standards and relevant regulations: the product packaging shall comply with the requirements of the EGH standard.
7.2 The outer packaging of the product shall be made of paper or polypropylene plastic. , the product must have a product certificate: the outer packaging should indicate the product name, specifications, number, manufacturer name and address: 7.3 The transportation should be clean and dry, and should not be packed with energy-conducting products. Once transported, the finished product will be damaged and the purchase center will be responsible.
.4 Strengthen the storage of salt-sensitive bacteria, the warehouse should be ventilated to prevent rain and moisture, and should not be stored together with energy-contaminated goods.7 Marking, packaging, transportation, storage
7.1 This product shall be packed in bags or bottles within 5 months. The packaging materials shall comply with relevant health standards and regulations. The product packaging shall comply with relevant EGH standards.
7.2 The outer packaging of the product shall be made of paper or polypropylene plastic and shall have a product certificate inside the vehicle. The outer packaging shall indicate the product name, specifications, number, name and address of the manufacturer and seller. 7.3 The transportation shall be clean and dry. It shall not be packed together with energy-conducting products. The finished product shall be shipped properly. The handling center shall be responsible for any damage caused to the finished product.
.4 Strengthen the storage of bacteria. The storage warehouse shall be ventilated to prevent rain and moisture. It shall not be stored together with energy-conducting products.7 Marking, packaging, transportation, storage
7.1 This product shall be packed in bags or bottles within 5 months. The packaging materials shall comply with relevant health standards and regulations. The product packaging shall comply with relevant EGH standards.
7.2 The outer packaging of the product shall be made of paper or polypropylene plastic and shall have a product certificate inside the vehicle. The outer packaging shall indicate the product name, specifications, number, name and address of the manufacturer and seller. 7.3 The transportation shall be clean and dry. It shall not be packed together with energy-conducting products. The finished product shall be shipped properly. The handling center shall be responsible for any damage caused to the finished product.
.4 Strengthen the storage of bacteria. The storage warehouse shall be ventilated to prevent rain and moisture. It shall not be stored together with energy-conducting products.
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