YS/T 239.4-2010 English PDF

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YS/T 239.4-2010: Methods for chemical analysis of antimony trisulfide. Part 4: Determination of aqua-regia insolubles content. Gravimetric method

YS/T 239.4: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 239.4-2010	209	Add to Cart	3 days	Methods for chemical analysis of antimony trisulfide. Part 4: Determination of aqua-regia insolubles content. Gravimetric method
YS/T 239.4-1994	199	Add to Cart	2 days	Chemical analysis of antimony trisulfide. Gravimetric method for determination of aqua-regia insolubles	Obsolete

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Basic data

Standard ID: YS/T 239.4-2010 (YS/T239.4-2010)
Description (Translated English): Methods for chemical analysis of antimony trisulfide. Part 4: Determination of aqua-regia insolubles content. Gravimetric method
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.01
Word Count Estimation: 6,668
Date of Issue: 2010-11-22
Date of Implementation: 2011-03-01
Older Standard (superseded by this standard): YS/T 239.4-1994
Regulation (derived from): MIIT (2010) No. 126
Issuing agency(ies): Ministry of Industry and Information Technology
Summary: This standard specifies the antimony trisulfide insoluble in aqua regia method. This standard applies to antimony trisulfide Determination of matter insoluble in aqua regia. Measuring range: aqua regia insolubles fraction 0. 050% to 0. 60%

YS/T 239.4-2010: Methods for chemical analysis of antimony trisulfide. Part 4: Determination of aqua-regia insolubles content. Gravimetric 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.
Methods for chemical analysis of antimony trisulfide.Part 4. Determination of aqua-regia insolubles content.Gravimetric method ICS 77.120.01 H13 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 239.4-1994 Antimony trisulfide chemical analysis Part 4. aqua regia insolubles - Gravimetric method Part 4. Determinationofaqua-regiainsolublescontent- Issued on. 2010-11-22 2011-03-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

YS/T 239 "Methods for chemical analysis of antimony trisulfide" There are seven sections. --- Part 1. Determination of antimony content cerium sulfate titration; --- Part 2. Determination of the amount of sulfur compounds and combustion titration method; --- Part 3. Determination of free sulfur content and combustion titration method; --- Part 4. aqua regia insolubles - Gravimetric method; --- Part 5. Determination of arsenic content of arsenic molybdenum blue spectrophotometric method; --- Part 6. Determination of iron content of phenanthroline spectrophotometry; --- Part 7. Determination of lead content by flame atomic absorption spectrometry. This is Part 4. This section is in accordance with GB/T 1.1-2009 given rules drafted. The partial replacement of YS/T 239.4-1994 "Determination of aqua regia insoluble matters antimony trisulfide gravimetric method for chemical analysis." versus YS/T 239.4-1994 compared to this part of the following changes. --- Text format has been modified; --- Complements the precision and quality assurance and control provisions. This standard by the national non-ferrous metals Standardization Technical Committee (SAC/TC243) centralized. This standard is drafted by. Tin Mine flash-antimony industry limited liability company. This section is drafted. Tin Mine flash-antimony industry limited liability company. Participated in the drafting of this section. Hunan Chenzhou Mining Co., Ltd., Shandong Yanggu Yoshimitsu Copper Limited. The main drafters of this section. Yang Ping, Song should ball, Yaoxing Na, Chen Zhen E, Wang Jianling, Wu Shaobo. This part of the standard replaces the previous editions are. --- YS/T 239.4-1994; --- GB 3255.4-1982. Antimony trisulfide chemical analysis Part 4. aqua regia insolubles - Gravimetric method

1 Scope

This section YS/T 239 specifies the method for determination of aqua regia insoluble antimony trisulfide. This section applies to the determination of antimony trisulfide insoluble in aqua regia. Measurement range. aqua regia insolubles content 0.050% 0.60%.

2 Method summary

Sample was dissolved with hydrochloric acid, boil drive to make hydrogen sulfide, nitric acid plus dissolved in aqua regia weight determination of insolubles.

3 Reagents

Unless otherwise indicated, the reagents used in this section refer to water and recognized analytical reagent and tertiary water. 3.1 hydrochloride (ρ1.19g/mL). Nitrate 3.2 (ρ1.42g/mL). 3.3 hydrochloride (21). 3.4 silver nitrate solution (20g/L).

4 Sample

4.1 Sample size should be less than 0.100mm. 4.2 specimen should be 100 ℃ ~ 105 ℃ drying 1h, placed in a desiccator to cool to room temperature. Step 5 Analysis 5.1 Sample Weigh 5.0g sample, accurate to 0.001g. 5.2 Determination of the number of Independently measured twice and averaged. 5.3 blank test Along with sample blank test. 5.4 Determination 5.4.1 The sample (5.1) into 300mL beaker, add 60mL of hydrochloric acid (3.1), shake the beaker slightly promote dissolution, heat gently to dissolve again ......

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