GB/T 15926-2010 English PDF

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GB/T 15926-2010: Method for chemical analysis of bismuth ores -- Determination of bismuth content
Status: Valid

GB/T 15926: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 15926-2010	139	Add to Cart	3 days	Method for chemical analysis of bismuth ores -- Determination of bismuth content	Valid
GB/T 15926-1995	199	Add to Cart	2 days	Method for chemical analysis of bismuth ores--Determination of bismuth content--EDTA complexometric titration	Obsolete

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Basic data

Standard ID: GB/T 15926-2010 (GB/T15926-2010)
Description (Translated English): Method for chemical analysis of bismuth ores -- Determination of bismuth content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: D42
Classification of International Standard: 73.060
Word Count Estimation: 6,624
Date of Issue: 2010-11-10
Date of Implementation: 2011-02-01
Older Standard (superseded by this standard): GB/T 15926-1995
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 determination of the amount of bismuth bismuth ores. This standard applies to the determination of the amount of bismuth bismuth ores. Measuring range: 0. 1% bismuth.

GB/T 15926-2010: Method for chemical analysis of bismuth ores -- Determination of bismuth content

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Method for chemical analysis of bismuth ores. Determination of bismuth content ICS 73.060 D42 National Standards of People's Republic of China Replacing GB/T 15926-1995 Methods for chemical analysis of bismuth ores Bismuth Determination 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

Foreword

This standard replaces GB/T 15926-1995 "Determination of bismuth content of bismuth ores chemical analysis method EDTA volumetric method." This standard compared with GB/T 15926-1995, the main changes are as follows. --- Modify 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. The standard proposed by the People's Republic of China Ministry of Land Resources. This standard by the Technical Committee of Standardization 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. Xiong Yuxiang, Tangxing Min, Zhaoxian ball. This standard replaces the standards previously issued as follows. --- GB/T 15926-1995. Methods for chemical analysis of bismuth ores Bismuth Determination Warning. Use of this standard staff should have practical experience in regular laboratory work. This standard does not point out all possible security asked question. Users have the responsibility to take appropriate safety and health practices and to ensure compliance with the conditions relevant national regulations.

1 Scope

This standard specifies the method for the determination of bismuth ores of bismuth content. This standard applies to the determination of bismuth content of bismuth ore. Measuring range. 0.1% or more of bismuth.

2 Normative references

The 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 Samples with hydrochloric acid, nitric acid, perchloric acid decomposition, nitric acid medium at pH 1.5 to 2.0, and ascorbic acid with vanadium (V) and iron (Ⅲ), thiourea, tartaric acid masking interference copper, antimony, tin, thorium, zirconium, niobium, with the xylenol orange indicator, with EDTA standard solution drops Set by the amount of consumption of EDTA standard solution, calculate the amount of bismuth.

4 Reagents

Unless otherwise indicated in the analysis are consistent with the use of analytical reagents and GB/T 6682 water analytical laboratory. 4.1 ascorbic acid. 4.2 hydrochloride (ρ1.19g/mL). Nitrate 4.3 (ρ1.40g/mL). 4.4 perchloric acid (ρ1.67g/mL). Warning. explosive materials, careful 4.5 nitric acid (11). 4.6 nitric acid (199). 4.7 Aqueous ammonia (11). 4.8 ammonia (298). 4.9 thiourea solution (60g/L). 4.10 tartaric acid solution (100g/L). 4.11 sodium acetate solution (200g/L). 4.12 Bismuth standard stock solution. Weigh 1.0000g bismuth (mass fraction ≥99.99%), placed in 250mL beaker, add 20mL Nitric acid (4.5), cover the surface of the pan, over low heat until completely dissolved, boil rush to make nitrogen oxides, remove the cooled to room temperature, the solution is transferred 1000mL volumetric flask, with nitric acid (4.6) and Beibi purged dish surface, and dilute to the mark. The concentration of the solution is bismuth 1.0mg/mL. 4.13 edetate disodium (EDTA) titration standard solution (0.005mol/L). ......

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