GB/T 15922-2010 English PDFUS$139.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 15922-2010: Method for chemical analysis of cobalt ores -- Determination of cobalt content Status: Valid GB/T 15922: Historical versions
Basic dataStandard ID: GB/T 15922-2010 (GB/T15922-2010)Description (Translated English): Method for chemical analysis of cobalt ores -- Determination of cobalt content Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: D42 Classification of International Standard: 73.060 Word Count Estimation: 6,648 Date of Issue: 2010-11-10 Date of Implementation: 2011-02-01 Older Standard (superseded by this standard): GB/T 15922-1995 Quoted Standard: GB/T 6682 Regulation (derived from): National Standard Approval Announcement 2010 No.8 (Total No.163) 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 cobalt ore by atomic absorption spectrophotometry method for determining the amount of cobalt. This standard applies to the determination of the amount of cobalt cobalt ore. Measuring range: 0. 05% to 2. 0 % cobalt. GB/T 15922-2010: Method for chemical analysis of cobalt ores -- Determination of cobalt content---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.Method for chemical analysis of cobalt ores.Determination of cobalt content ICS 73.060 D42 National Standards of People's Republic of China Replacing GB/T 15922-1995 Methods for chemical analysis of cobalt ore Determination of cobalt content Issued on. 2010-11-10 2011-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard replaces GB/T 15922-1995 "Methods for chemical analysis of cobalt ore by flame atomic absorption spectrophotometric determination of cobalt content." This standard compared with GB/T 15922-1995, the main changes are as follows. --- Modify the standard Chinese name; --- Increasing the standard English name; --- Increased alert, warning of the content; --- Increasing the purity of the reagents used and experimental water requirements; --- Increasing the particle size of the sample and drying requirements; --- Increased verification test content. Appendix A of this standard is an informative annex. The standard proposed by the People's Republic of China Ministry of Land Resources. This standard by the National Standardization Technical Committee of Land and Resources. This standard is drafted by. National Geological Experimental Test Center. This standard was drafted. Hubei Institute of Geology. The main drafters of this standard. Wu Jun, Fang Jindong, Tangxing Min. This standard replaces the standards previously issued as follows. --- GB/T 15922-1995. Methods for chemical analysis of cobalt ore Determination of cobalt content Warning. Use of this standard shall have a person experiences regular laboratory work. This standard does not point out all possible security issues. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.1 ScopeThis standard specifies the acid dissolution or alkali fusion after separating prepared acidic solution, spectrophotometric determination of cobalt ore cobalt atomic absorption method. This standard applies to the determination of cobalt content of cobalt ore. Measuring range. 0.05% to 2.0% cobalt.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. Laboratory use specifications and test methods GB/T 6682 Analysis Principle 3 Sample hydrofluoric acid, after aqua regia, perchloric acid decomposition with hydrochloric acid dissolved salt (or sodium peroxide, sodium hydroxide melt ore, water extraction, filtration, The precipitate was dissolved in hydrochloric acid) in 5% hydrochloric acid medium, atomic absorption spectrophotometer, at a wavelength of 252.1nm, using air - acetylene fire Flame, cobalt absorbance was measured to calculate the amount of cobalt.4 ReagentsUnless otherwise indicated, the use of analytical reagents and in line with GB/T 6682 or equivalent purity distilled water in the analysis. 4.1 sodium peroxide. 4.2 sodium hydroxide. 4.3 hydrochloride (ρ1.19g/mL). Nitrate 4.4 (ρ1.40g/mL). 4.5 Hydrofluoric acid (ρ1.13g/mL). WARNING. Hydrofluoric acid is toxic and corrosive, the operation should wear gloves to prevent skin contact 4.6 perchloric acid (ρ1.67g/mL). Warning. explosive materials, careful 4.7 ethanol. 4.8 aqua regia. [hydrochloric acid (4.3) nitrate (4.4)] = (31), freshly prepared. 4.9 hydrochloride (11). 4.10 nitric acid (11). 4.11 Sodium hydroxide solution (20g/L). 4.12 Cobalt standard solution. Weigh 0.1000g of cobalt metal (mass fraction ≥99.99%), placed in 100mL beaker covered with a watch glass, along Beibi added 20mL of nitric acid (4.10), heated and dissolved, evaporated on a water bath. With a small amount of water purged Petri dish, was added 5mL hydrochloric acid (4.3), Evaporated on a water bath, repeat. Was added 10mL of hydrochloric acid (4.3) to dissolve the cobalt salt, cooled and transferred to 1000mL volumetric flask, and dilute with water Release to the mark. Cobalt concentration of the solution is 0.10mg/mL. ......Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of GB/T 15922-2010_English be delivered?Answer: Upon your order, we will start to translate GB/T 15922-2010_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 15922-2010_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 15922-2010_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. 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