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GB/T 14352.4-2010 English PDF

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GB/T 14352.4-2010: Methods for chemical analysis of tungsten ores and molybdenum ores -- Part 4: Determination of lead content
Status: Valid

GB/T 14352.4: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 14352.4-2010English139 Add to Cart 3 days [Need to translate] Methods for chemical analysis of tungsten ores and molybdenum ores -- Part 4: Determination of lead content Valid GB/T 14352.4-2010
GB/T 14352.4-1993English199 Add to Cart 2 days [Need to translate] Methods for chemical analysis of tungsten ores molybdenum ores. Determination of copper content. Flame atomic absorption spectrometric method Obsolete GB/T 14352.4-1993

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Basic data

Standard ID GB/T 14352.4-2010 (GB/T14352.4-2010)
Description (Translated English) Methods for chemical analysis of tungsten ores and molybdenum ores -- Part 4: Determination of lead content
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard D40
Classification of International Standard 73.060
Word Count Estimation 6,682
Date of Issue 2010-11-10
Date of Implementation 2011-02-01
Older Standard (superseded by this standard) GB/T 14352.4-1993
Quoted Standard GB/T 6682; GB/T 14505
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 tungsten ores, determination of molybdenum ores of lead content. This section applies to tungsten ores, determination of molybdenum ores of lead content. Measuring range: 0. 01% to 5% lead.

GB/T 14352.4-2010: Methods for chemical analysis of tungsten ores and molybdenum ores -- Part 4: Determination of lead content


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Methods for chemical analysis of tungsten ores and molybdenum ores Part 4. Determination of lead content ICS 73.060 D40 National Standards of People's Republic of China Replacing GB/T 14352.4-1993 Tungsten ores and molybdenum ores - Methods for chemical analysis Part 4. Determination of lead content Part 4. Determinationofleadcontent 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

GB/T 14352 "tungsten ores and molybdenum ores chemical analysis methods," a total of 18 parts. --- Part 1. Determination of tungsten; --- Part 2. Determination of molybdenum; --- Part 3. Determination of copper content; --- Part 4. Determination of lead content; --- Part 5. Determination of the amount of zinc; --- Part 6. Determination of cadmium content; --- Part 7. Determination of cobalt content; --- Part 8. Determination of nickel content; --- Part 9. Determination of sulfur content; --- Part 10. Determination of arsenic content; --- Part 11. Determination of the amount of bismuth; --- Part 12. determination of silver; --- Part 13. Determination of tin; --- Part 14. Determination of gallium; --- Part 15. Determination of germanium content; --- Part 16. Determination of the amount of selenium; --- Part 17. Determination of tellurium content; --- Part 18. Determination of the amount of rhenium. This section GB/T Part of 414,352. This Part replaces GB/T 14352.4-1993 "tungsten ores and molybdenum ores - Methods for chemical analysis by flame atomic absorption spectrophotometry The amount of lead. " Section compared with the GB/T 14352.4-1993, major changes in the following. --- Increased alert, warnings; --- Modify the sample drying temperature. Appendix A of this section is an informative annex. This section presents the People's Republic of China Ministry of Land Resources. This part of the National Standardization Technical Committee under the jurisdiction of Land and Resources. This section is responsible for drafting. National geology test center. This section is drafted. Jiangsu Provincial Institute of Geological Survey (Ministry of Land and Mineral Resources Supervision and Testing Center, Nanjing). The main drafters of this section. Zhoukang Min, CAI Yu Man. This part of the standard replaces the previous editions are. --- GB/T 14352.4-1993. Tungsten ores and molybdenum ores - Methods for chemical analysis Part 4. Determination of lead content Warning. Use of this section a person shall be regular laboratory work experience. This section does not indicate that 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 Scope

This section GB/T 14352 provides for tungsten ores and determination of lead content - Molybdenum Ore. This Part applies to tungsten ores Determination of lead content of molybdenum ore. Measurement range. from 0.01% to 5% lead.

2 Normative references

The following documents contain provisions which, through reference GB/T 14352 in this section constitute provisions of this section. For dated reference documents Member, all subsequent amendments (not including errata content) or revisions do not apply to this section, however, encouraged to reach under this section Parties to research agreement to use the latest versions of these documents. For undated reference documents, the latest versions apply to this section. Laboratory use specifications and test methods GB/T 6682 Analysis GB/T 14505 method for chemical analysis of rocks and ores General rules and regulations Principle 3 Sample hydrofluoric acid, aqua regia, perchloric acid decomposition in nitric acid - boric acid media, using air - acetylene flame atomic absorption spectrophotometry The meter at a wavelength of 283.3nm at measuring the absorbance of lead, calculate the amount of lead.

4 Reagents

Unless otherwise stated in this section are consistent with the use of analytical reagent and GB/T 6682 analytical laboratory use in the analysis. 4.1 hydrofluoric acid (ρ1.13g/mL), Warning. Toxic and corrosive hydrofluoric acid, the operation should wear gloves to prevent skin contact. 4.2 perchloric acid (ρ1.67g/mL), Warning. explosive materials, careful 4.3 aqua regia. the 3 parts of hydrochloric acid (ρ1.19g/mL) and 1 part nitric acid (ρ1.42g/mL) mixed; formulated with time. 4.4 nitric acid (11). 4.5 nitric acid (595). 4.6 boric acid solution (60g/L). 4.7 Lead standard solution. a) lead standard stock solution [ρ (Pb) = 1.0mg/mL]. Weigh 1.0000g metallic lead (99.99%), placed in 250mL beaker , Covered the surface of the dish, along Beibi added 20mL of nitric acid (4.4), low dissolved by heating, cooling, water wash away the surface of the dish and transferred to 1000mL volumetric flask, dilute to the mark, shake; b) lead standard solution [ρ (Pb) = 20.0μg/mL]. dispensing 20.00mL lead standard stock solution [4.7a)], placed 1000mL Volumetric flask, dilute to the mark, shake.

5 Instruments

5.1 Analytical balance. three, a sense of the amount of 0.1mg.

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