GB/T 25222-2010 English PDFUS$139.00 ยท In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 25222-2010: Inspection of grain and oils -- Determination of phosphide residues in grain -- Spectrophotometric method Status: Valid
Basic dataStandard ID: GB/T 25222-2010 (GB/T25222-2010)Description (Translated English): Inspection of grain and oils -- Determination of phosphide residues in grain -- Spectrophotometric method Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: B20 Classification of International Standard: 67.060 Word Count Estimation: 6,654 Date of Issue: 2010-09-26 Date of Implementation: 2011-03-01 Quoted Standard: GB 5491; GB/T 6682 Regulation (derived from): National Standard Approval Announcement 2010 No.6 (Total No.161) Issuing agency(ies): General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China Summary: This standard specifies the spectrophotometric method-Determination phosphide residues in food terms and definitions, principle, reagents and materials, instruments and equipment, for sampling, sample preparation, steps, calculation and presentation of results. This standard applies to the determination of phosphide fumigant residues in food. The detection limit of the standard method of 0. 01mg/kg. GB/T 25222-2010: Inspection of grain and oils -- Determination of phosphide residues in grain -- Spectrophotometric method---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. Inspection of grain and oils. Determination of phosphide residues in grain. Spectrophotometric method ICS 67.060 B20 National Standards of People's Republic of China Determination phosphide residues in food grain and oil inspection Issued on. 2010-09-26 2011-03-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThe standard proposed by the National Food Authority. This standard by the National Standardization Technical Committee OILS. This standard is drafted by. Nanjing University of Finance and Economics. Participated in the drafting of this standard. Jiangsu Cereals, Oils Quality Supervision, Inspection, Nanjing Quality Supervision and Inspection of grain and oil, grain and oil Jilin Province health Inspection Stations. The main drafters of this standard. Yuan Jian, Yang Xiaorong, Dai Bo, Wang Haifeng, Mo Xiaosong, in Xiaohe, high Xiaochun. Determination phosphide residues in food grain and oil inspection Spectrophotometry1 ScopeThis standard specifies the spectrophotometric determination of residues in food in phosphide terms and definitions, principles, reagents and materials, instruments and Equipment for sampling, sample preparation, the steps, the results of the calculation and presentation. This standard applies to the determination of phosphide fumigant residues in food. The detection limit of the standard method of 0.01mg/kg.2 Normative referencesThe following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard. GB 5491 grain and oilseeds testing for sampling, and sample method Laboratory use specifications and test methods GB/T 6682 Analysis3 Terms and DefinitionsThe following terms and definitions apply to this standard. 3.1 Phosphide phosphide Phosphorus-containing compound used as a fumigant, such as aluminum phosphide and the like. 3.2 Phosphide residues in phosphideresidues Under this standard are measured residual phosphide content in grain. Phosphine accounting sample mass fraction representation. Principle 4 Phosphide samples under the action of acid and water to produce phosphine gas, evaporated and taken up in the acidic potassium permanganate solution is oxidized to phosphorus Acid, and then generate and ammonium molybdate ammonium phosphomolybdate effect, reduced to a blue molybdenum compound with stannous chloride --- blue, absorbance was measured using a standard curve Statutory amount.5 Reagents and materialsUnless otherwise specified, the reagents used were of analytical grade. Test water should comply with GB/T 6682 in the three requirements. 5.1 potassium permanganate solution (16.5g/L). Weigh 16.5g of potassium permanganate, after dissolved in water and diluted to 1000mL, stand three or heating Boil 3min, cooled and allowed to stand overnight, filtered alternate with glass wool or asbestos. 5.2 potassium permanganate solution (3.3g/L). take a certain amount of potassium permanganate solution (5.1) was diluted with water five times. (117) 5.3 Sulfate. Take 28mL98% sulfuric acid was slowly added 400mL of water, 500mL water was added to the cooled. 5.4 sulfate (15). Take 83.3mL98% sulfuric acid was slowly added 400mL of water, cooled water was added to 500mL. 5.5 saturated sodium sulfite solution. Take 28.5g of anhydrous sodium sulfite, add about 70mL of water, micro-heat to dissolve, cooled and diluted to 100mL. 5.6 ammonium molybdate solution. 50g/L. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 25222-2010_English be delivered?Answer: Upon your order, we will start to translate GB/T 25222-2010_English as soon as possible, and keep you informed of the progress. The lead time is typically 1 ~ 3 working days. The lengthier the document the longer the lead time.Question 2: Can I share the purchased PDF of GB/T 25222-2010_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 25222-2010_English will be deemed to be sold to your employer/organization who actually pays for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. If you need your currency to be printed on the invoice, please write an email to Sales@ChineseStandard.net. In 2 working-hours, we will create a special link for you to pay in any currencies. Otherwise, follow the normal steps: Add to Cart -- Checkout -- Select your currency to pay. |
