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GB/T 14506.20-2010 English PDF

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GB/T 14506.20-2010: Methods for chemical analysis of silicate rocks -- Part 20: Determination of zinc content
Status: Valid

GB/T 14506.20: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 14506.20-2010English259 Add to Cart 3 days [Need to translate] Methods for chemical analysis of silicate rocks -- Part 20: Determination of zinc content Valid GB/T 14506.20-2010
GB/T 14506.20-1993English279 Add to Cart 3 days [Need to translate] Sillicate rocks. Determination of zine Obsolete GB/T 14506.20-1993

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Basic data

Standard ID GB/T 14506.20-2010 (GB/T14506.20-2010)
Description (Translated English) Methods for chemical analysis of silicate rocks -- Part 20: Determination of zinc content
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard D53
Classification of International Standard 73.080
Word Count Estimation 11,121
Date of Issue 2010-11-10
Date of Implementation 2011-02-01
Older Standard (superseded by this standard) GB/T 14506.20-1993
Quoted Standard GB/T 6682; GB/T 14506.1
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 zinc silicate rocks. This section applies to the determination of the amount of zinc silicate rocks. This section also applies to the determination of zinc in soil and stream sediment volume. Measuring range: sodium hydroxide-ammonium chloride polarography, 25��g/g or more the amount of zinc, ethylene diamine medium polarographic method, 20��g/g ~ 2 000��g/g of zinc content by flame atomic absorption spectrophotometry law, 5��g/g ~ 200��g/g of zinc content in this section.

GB/T 14506.20-2010: Methods for chemical analysis of silicate rocks -- Part 20: Determination of zinc content


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Methods for chemical analysis of silicate rocks Part 20. Determination of zinc content ICS 73.080 D53 National Standards of People's Republic of China Replacing GB/T 14506.20-1993 Silicate rocks - Part 20. Determination of the amount of zinc Part 20. Determinationofzinccontent 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 14506 "Methods for chemical analysis of silicate rocks" 30 consists of the following components. --- Part 1. Determination of water absorption; --- Part 2. Determination of combined water; --- Part 3. Determination of the amount of silica; --- Part 4. Determination of the amount of aluminum oxide; --- Part 5. Determination of total iron content; --- Part 6. Determination of calcium oxide content; --- Part 7. Determination of the amount of magnesium oxide; --- Part 8. Determination of the amount of titanium dioxide; --- Part 9. Determination of the amount of phosphorus pentoxide; --- Part 10. Determination of the amount of manganese oxide; --- Part 11. Determination of the amount of sodium hydroxide and oxide; --- Part 12. Determination of the amount of fluorine; --- Part 13. Determination of sulfur content; --- Part 14. Determination of ferrous oxide; --- Part 15. Determination of the amount of lithium; --- Part 16. Determination of the amount of rubidium; --- Part 17. Determination of the amount of strontium; --- Part 18. Determination of copper content; --- Part 19. Determination of lead content; --- Part 20. Determination of the amount of zinc; --- Part 21. Determination of the amount of nickel and cobalt; --- Part 22. Determination of the amount of vanadium; --- Part 23. Determination of chromium; --- Part 24. Determination of cadmium content; --- Part 25. Determination of molybdenum and tungsten; --- Part 26. Determination of cobalt content; --- Part 27. Determination of nickel content; --- Part 28. Determination of the amount of 16 major and minor components; Part --- 29. 22 the amount of rare earth element determination; --- Part 30. Determination of the amount of 44 elements. This section GB/T Part of 2,014,506. This Part replaces GB/T 14506.20-1993 "Silicate rocks - Determination of zinc." Section compared with the GB/T 14506.20-1993 main change this as follows. --- Increasing the normative references; --- Increased warning, warning. 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 drafted by. National Geological experimental test center, Geology and Mineral Resources of Heilongjiang Institute of Applied test. The main drafters of this section. Ya, Dong Bo, Wangsu Ming. This part of the standard replaces the previous editions are. --- GB/T 14506.20-1993. Silicate rocks - Part 20. Determination of the amount of zinc Warning --- Use this section shall be a person experiences regular laboratory work. This section 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

GB/T 14506 provisions of this part of the determination of the amount of zinc silicate rocks. This section applies to the amount of zinc silicate rocks in the determination also applies to the measurement of soil and stream sediments of zinc content. Measurement range. sodium hydroxide - ammonium chloride polarography, 25μg/g or more of zinc content. Ethylenediamine medium polarographic method, 20μg/g ~ 2000μg/g amount of zinc. Flame atomic absorption spectrophotometry, 5μg/g ~ 200μg/g of zinc content.

2 Normative references

The following documents contain provisions which, through reference GB/T 14506 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 14506.1 Silicate rocks - Part 1. Determination of water adsorption 3 sodium hydroxide - ammonium chloride polarography 3.1 Principle Samples with hydrochloric acid - nitric acid - hydrofluoric acid decomposition, adding a small amount of perchloric acid, and evaporated to try to take the white smoke rush hydrofluoric acid and nitric acid. Then 3mol/L ammonia -1mol L ammonium chloride solution /, on the oscilloscope pole spectrometer, the peak potential of about -1.39V (saturated calomel electrode), derivative Reduction wave part of the determination of zinc calculated amount of zinc. 3.2 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. 3.2.1 hydrochloric acid (ρ1.19g/mL), pure class distinctions. 3.2.2 hydrochloric acid (11), pure class distinctions. 3.2.3 nitrate (ρ1.42g/mL), pure class distinctions. 3.2.4 hydrofluoric acid (ρ1.15g/mL). Warning --- toxic and corrosive hydrofluoric acid, the operation should wear gloves to prevent skin contact. 3.2.5 perchloric acid (ρ1.67g/mL), pure class distinctions. Warning --- explosive materials, careful 3.2.6 ammonia [c (NH4OH) = 7.5mol/L] - ammonium chloride [c (NH4Cl) = 2.5mol/L] - sodium sulfite (25g/L) mixturecontaining Solution. Weigh 67g of ammonium chloride and 12.5g anhydrous sodium sulfite, placed in 600mL beaker, approximately 150mL of water was added, dissolved, was added 262mL ammonia (ρ0.88g/mL, pure class distinctions), diluted with water to 500mL, stir well. Plastic bottle into a dry spare. NOTE. zinc blank test in advance. When do not meet the requirements, it should be refined before the end of the preparation of the mixed liquid. Specific steps are as follows. ammonia to 1000mL (Ρ0.88g/mL) was poured into a clean container (or replaced with a drier), placed in a plastic water containing 500mL beaker, stamped seal, 24h After the sodium hydroxide concentration up to about (11), followed by addition of 67g of ammonium chloride and 12.5g anhydrous sodium sulfite, stirring to dissolve. At this time a total volume of approximately 560mL, dry plastic bottle into the spare. 3.2.7 iron solution. Weigh 1.0000g spectroscopically pure ferric oxide, placed in 150mL beaker, add 5mL hydrochloric acid (3.2.1), heating After dissolution, water and transferred to 100mL volumetric flask, and dilute to the mark. This solution 1mL containing 10mg of ferric oxide.

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