GB/T 23513.3-2009 English PDF

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GB/T 23513.3-2009: Chemical analysis methods for germanium concentrate -- Part 3: Determination of sulfur content -- Barium sulfate gravimetry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23513.3-2009	149	Add to Cart	2 days	Chemical analysis methods for germanium concentrate -- Part 3: Determination of sulfur content -- Barium sulfate gravimetry	Valid

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Basic data

Standard ID: GB/T 23513.3-2009 (GB/T23513.3-2009)
Description (Translated English): Chemical analysis methods for germanium concentrate -- Part 3: Determination of sulfur content -- Barium sulfate gravimetry
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H66
Classification of International Standard: 77.120.99
Word Count Estimation: 5,559
Date of Issue: 2009-04-08
Date of Implementation: 2010-02-01
Regulation (derived from): National Standard Approval Announcement 2009 No.4 (Total No.144)
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 determination of germanium concentrate sulfur content. This section applies to the determination of germanium concentrate in sulfur content. Measurement range: 0. 5% to 10%.

GB/T 23513.3-2009: Chemical analysis methods for germanium concentrate -- Part 3: Determination of sulfur content -- Barium sulfate gravimetry

---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.
Chemical analysis methods for germanium concentrate Part 3. Determination of sulfur content Barium sulfate gravimetry ICS 77.120.99 H66 National Standards of People's Republic of China Chemical analysis methods for germanium concentrate Part 3. Determination of sulfur content by weight of barium sulfate method Posted 2009-04-08 2010-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 23513 "Chemical analysis methods for germanium concentrate" is divided into five parts. --- Part 1. Determination of germanium content of potassium iodate titration; --- Part 2. Determination of arsenic content ammonium ferrous sulfate titration; --- Part 3. Determination of sulfur content of barium sulfate gravimetric method; --- Part 4. Determination of the amount of fluorine ion selective electrode method; --- Part 5. silicon dioxide content - Gravimetric method. This is Part 3. This part is proposed by the China Nonferrous Metals Industry Association. The non-ferrous metal part by the National Standardization Technical Committee. This section is responsible for drafting unit. Yunnan Lincang Xinyuan Germanium Industry Co., Ltd. Participated in the drafting of this section. Lingnan Shaoguan smelter, Huaihua City, Hong Jiang Hengchang Germanium Co., Ltd., Nanjing Germanium Factory limited liability Any company, Beijing State Technology Co., Ltd. crystal-infrared optics. The main drafters of this section. East Bowen, Li Hecheng, universal Kun, Zheng Hong, Meng toward high. Chemical analysis methods for germanium concentrate Part 3. Determination of sulfur content by weight of barium sulfate method

1 Scope

GB/T 23513 provisions of this part of the determination of germanium concentrate sulfur content. This section applies to the determination of germanium concentrate sulfur content. Measuring range. 0.5% to 10%.

2 principle of the method

Sample with potassium chlorate, nitrate decomposition with aqueous ammonia and ammonium carbonate, iron, aluminum and other impurities precipitation in hydrochloric acid solution with barium chloride to form sulfur Barium precipitation, filtration, after ashing, call quality, the total sulfur content; in another equivalent test compound, treated hydrochloric acid to remove soluble sulfur volatiles generated Hydrogen sulfide, in a sample with sodium sulfate leaching, impurity and then ammonia, ammonium carbonate, separation of iron, lead, elemental sulfur, sulfur chloride ions Precipitated barium sulfate. Minus sulfate sulfur from the total amount of sulfur, for the determination of sulfur content.

3 Reagents

Unless otherwise stated, only confirmed in the analysis of analytical grade reagents and distilled water or equivalent purity. 3.1 potassium chlorate (KClO3). 3.2 ammonium carbonate ((NH4) 2CO3). Nitrate 3.3 (ρ1.42g/mL). 3.4 hydrochloride (ρ1.19g/mL). 3.5 Ammonia (ρ1.09g/mL). 3.6 HCl (1 + 1). Hydrochloride 3.7 (95 + 5). 3.8 barium chloride (100g/L). 3.9 methyl orange indicator (0.2%). 3.10 Sodium chloride (200g/L). 3.11 ferric chloride solution (1%). Weigh 10g of ferric chloride, add hydrochloric acid (3.4) is dissolved and transferred to 1000mL volumetric flask, dilute with water Release to the mark. Step 4 Analysis 4.1 Sample The samples were ground through 0.125mm (120 mesh) after Sieve Weigh 1.0g sample, accurate to 0.0001g. 4.2 Determination of the number of Independently two determinations, the mean value. 4.3 blank test Along with sample blank test. 4.4 Determination of total sulfur 4.4.1 The sample (4.1) into 300mL beaker, add 5g potassium chlorate (3.1) and a small amount of water, so shaken was mashed, added 20mL Nitric acid (3.3) a table covered dish, place the decomposition 2h at room temperature, heated steam until nearly dry, low temperature shifted to dryness, was added 20mL of hydrochloric acid (3.4), then After dissolved by heating and steam until nearly dry, repetitive 10mL hydrochloric acid (3.4) evaporated to near dryness, evaporated to dryness at low temperature shift, plus 10mL hydrochloric acid (3.4) Low heat to dissolve the soluble salts removed [such as iron in a sample of less than 10mg, should be added to 2mL ferric chloride solution (3.11)]. 4.4.2 solution (4.4.1) adding water to a volume of about 100mL, was heated to near boiling, removed, generation of ferric hydroxide with stirring under sink with ammonia (3.5) ......

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