SN/T 2092-2008 English PDFUS$169.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. SN/T 2092-2008: Determination of selenium content in antimony ingot for import and export.Atomic fluorescence spectrometric method Status: Valid
Basic dataStandard ID: SN/T 2092-2008 (SN/T2092-2008)Description (Translated English): Determination of selenium content in antimony ingot for import and export.Atomic fluorescence spectrometric method Sector / Industry: Commodity Inspection Standard (Recommended) Classification of Chinese Standard: H25 Classification of International Standard: 77.040 Word Count Estimation: 6,651 Date of Issue: 2008-04-29 Date of Implementation: 2008-11-01 Regulation (derived from): National-accreditation-Science [2012] 57 Issuing agency(ies): General Administration of Customs Summary: This standard specifies the import and export of antimony ingot method for determination of selenium. This standard applies to imports and antimony selenium content. Measuring range: 0. 00010% to 0. 010% SN/T 2092-2008: Determination of selenium content in antimony ingot for import and export.Atomic fluorescence spectrometric 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. Determination of selenium content in antimony ingot for import and export.Atomic fluorescence spectrometric method Exit inspection and quarantine industry standard book People's Republic of China Determination of antimony content of selenium in the import and export of Atomic Fluorescence Spectrometry Posted 2008-04-29 2008-11-01 implementation People's Republic of China The State Administration of Quality Supervision, Inspection and Quarantine released ForewordAppendix A of this standard is an informative annex. This standard is proposed and managed by the National Certification and Accreditation Administration Committee. This standard by the People's Republic of China Guangdong CIQ is responsible for drafting. The main drafters of this standard. Zhongmei Fang, Guo Seoul, hair autumn Mei, Li Guangming, yellow submarine Ji, Gu Changsheng, Zhang. This standard is the first release of the entry-exit inspection and quarantine industry standards. Determination of antimony content of selenium in the import and export of Atomic Fluorescence Spectrometry1 ScopeThis standard specifies the method for determination of import and export antimony content of selenium. This standard applies to the determination of Importers and antimony content of selenium. Measurement range. 0.0001% to 0.010%.2 Method summaryA sample was calcined agent, covering trapping agent, calcined at 800 ℃, extracted with water and dispensing serum, in hydrochloric acid medium, reducing the hexavalent selenium Tetravalent selenium, potassium borohydride reduction of the tetravalent selenium hydrogen selenide, determination of selenium by atomic fluorescence spectrometer.3 Reagents and materialsUnless otherwise indicated in the analysis using only recognized as analytical grade reagents and distilled or deionized water or water of equivalent purity. 3.1 potassium hydroxide. 3.2 magnesium oxide. 3.3 anhydrous sodium carbonate. 3.4 Toner (or activated carbon). 3.5 potassium borohydride. 3.6 hydrochloric acid (ρ1.19g/mL, pure class distinctions). 3.7 nitrate (ρ1.42g/mL, pure class distinctions). 3.8 scavenger. 4 parts of anhydrous sodium carbonate was mixed with 1 part of magnesium oxide, ground, 105 ℃ drying 2h. 3.9 solution of potassium borohydride (15g/L). Weigh 15g potassium borohydride (3.5), was dissolved in 1000mL potassium hydroxide solution (2g/L), and mixed uniform. The time is now equipped with. 3.10 Selenium standard stock solution (100μg/mL). Weigh 0.1000g of pure selenium (purity ≥99.95%), placed in 100mL beaker, add 5mL nitric acid, heating the water bath and evaporated to dryness, dissolved in water and transferred to 1000mL volumetric flask, dilute with water to volume, and mix. 3.11 selenium standard solution (1.00μg/mL). Pipette 1.00mL stock selenium standard solution (3.10), placed in 100mL flask with water Dilute to volume, and mix. The time is now equipped with. 3.12 argon (purity ≥99.99%).4 Instrument4.1 atomic fluorescence spectrometer, with a special selenium hollow cathode lamp. 4.2 muffle furnace. Control temperature 800 ℃ ± 20 ℃.5 SampleAll samples should be ground to a standard sieve through 0.13mm, at 105 ℃ ~ 110 ℃ baking 1h, placed in a desiccator, cool to room temperature. Step 6 Analysis 6.1 Sample Table 1. Weigh the sample to the nearest 0.0001g. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of SN/T 2092-2008_English be delivered?Answer: Upon your order, we will start to translate SN/T 2092-2008_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 SN/T 2092-2008_English with my colleagues?Answer: Yes. The purchased PDF of SN/T 2092-2008_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. |
