GB/T 8207-2007 English PDFUS$209.00 · In stock
Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GB/T 8207-2007: Determination of germanium in coal Status: Valid GB/T 8207: Historical versions
Basic dataStandard ID: GB/T 8207-2007 (GB/T8207-2007)Description (Translated English): Determination of germanium in coal Sector / Industry: National Standard (Recommended) Classification of Chinese Standard: D21 Classification of International Standard: 73.040 Word Count Estimation: 8,813 Date of Issue: 2007-11-01 Date of Implementation: 2008-06-01 Older Standard (superseded by this standard): GB/T 8207-1987 Regulation (derived from): China National Standard Approval Announcement2007 No.12 (Total No.112) Issuing agency(ies):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 distillation of coal in a germanium drug spectrophotometric benzene and benzene extraction separation of a Ru spectrophotometric method feeds, reagent materials, equipment, test procedures, results presentation and precision of the method and so on. When the arbitration analysis should be used Yan Ru ketone benzene distillate Separation colorimetry. This standard applies to lignite, bituminous coal and anthracite. Measurement range of (1 ~ 200) ��g/g. GB/T 8207-2007: Determination of germanium in coal---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 germanium in coal ICS 73.040 D21 National Standards of People's Republic of China Replacing GB/T 8207-1987 Determination of germanium in coal Posted 2007-11-01 2008-06-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released ForewordThis standard replaces GB/T 8207-1987 "Determination of germanium in coal." This standard compared with GB/T 8207-1987, the main changes are as follows. --- Altered the standard terminology, symbols and units of measurement; --- Increasing the foreword, scope, normative references and test reports of four parts; --- Modify the results of the calculation formula (1987 version 1.4, this version 3.5); --- Modify the precision of the method (the 1987 version 1.5, this version 3.6); --- Modify the extraction and separation - Preparation Phenylfluorone spectrophotometry the sample solution and the blank sample (1987 edition 2.3.2 and 2.3.3, 4.4.2 and 4.4.3 of this edition). The standard proposed by China Coal Industry Association. This standard by the National Standardization Technical Committee of Coal. This standard was drafted. CCRI coal analysis laboratory, Coalfield Geology Institute. The main drafters of this standard. Yang Huayu. This standard replaces the standards previously issued as follows. --- GB/T 8207-1987. Determination of germanium in coal1 ScopeThis standard specifies the distillation of coal Germanium - Phenylfluorone spectrophotometry and extraction separation - Phenyl spectrophotometric method mention To the reagent materials, equipment, test procedures, results are expressed and precision of the method and the like. When arbitration analysis shall be separated by distillation - Phenyl Colorimetry. This standard applies to lignite, bituminous coal and anthracite. Measurement range (1 ~ 200) μg/g.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/T 483 coal analysis test methods - General provisions 3 distillation - benzene Spectrophotometer 3.1 Method summary The general analysis of coal samples ashed with nitric acid, phosphoric acid and hydrofluoric acid mixture exploded, then made into hydrochloric acid (6mol/L) and the solution was evaporated Distilled, in the form of germanium tetrachloride, germanium escape, water absorption and separated from interfering elements. In 1.2mol L solution of hydrochloric acid/color with Phenylfuoron And using a spectrophotometer spectrophotometry. 3.2 Reagents and materials 3.2.1 Water. deionized water or equivalent purity distilled water. 3.2.2 nitrate (GB/T 626). the relative density of 1.42. 3.2.3 Phosphate (GB/T 1282). the relative density of 1.88. 3.2.4 Hydrofluoric acid (GB/T 620). the relative density of 1.15. 3.2.5 hydrochloric acid (GB/T 622). the relative density of 1.19. 3.2.6 sulfuric acid (GB/T 625). the relative density of 1.84. 3.2.7 hydrochloric acid solution. about 6mol/L, 1 volume of hydrochloric acid (3.2.5) plus one volume of water, and mix. 3.2.8 hydrochloric acid solution. about 7mol/L, 580mL of hydrochloric acid (3.2.5) added 420mL of water, and mix. 3.2.9 hydrochloric acid solution. about 0.1mol/L, 8mL hydrochloric acid (3.2.5) added 992mL of water, and mix. 3.2.10 sodium hydroxide solution. 0.1mol/L, 4g of sodium hydroxide (GB/T 622) was dissolved in 1000mL of water. 3.2.11 boric acid (GB/T 628). 3.2.12 ethanol (GB/T 679). 95%. 3.2.13 sodium sulfite solution. 12g/100mL, 12g of anhydrous sodium sulfite (HG3-1078) was dissolved in 100mL water. 3.2.14 gelatin solution. 10mg/mL. Weigh 1g of gelatin was dissolved in 100mL, water (80 ~ 90) ℃ and filtered. Preparation before use. 3.2.15 germanium stock standard solution. 100μg/mL. Weigh 0.1441g spectroscopically pure germanium dioxide in the 400mL beaker, add sodium hydroxide solution (3.2.10) 1mL and water 50mL, Heated and dissolved; adding 0.1mol/L hydrochloric acid solution 1mL neutralized and excess 1mL. Solution was transferred to 1L flask, washed with water beaker, Lotion incorporated into the flask; dilute to the mark with water, shake spare. High purity germanium metal or weighed in the beaker 0.1000g micro ammonia aqueous solution, the solution of 6% hydrogen peroxide (HG3-1082), water Heating the bath to slowly dissolve, then with water into a platinum crucible and evaporated to dryness; 5g of anhydrous sodium carbonate (GB/T 1255) at an elevated temperature ...... |
