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GB/T 8151.3-2012 English PDF

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GB/T 8151.3-2012: Methods for chemical analysis of zinc concentrates -- Part 3: Determination of iron content -- Na2EDTA titrimetric method
Status: Valid

GB/T 8151.3: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 8151.3-2012English139 Add to Cart 3 days [Need to translate] Methods for chemical analysis of zinc concentrates -- Part 3: Determination of iron content -- Na2EDTA titrimetric method Valid GB/T 8151.3-2012
GB/T 8151.3-2000English199 Add to Cart 2 days [Need to translate] Methods for chemical analysis of zinc concentrates -Determination of iron content Obsolete GB/T 8151.3-2000
GB/T 8151.3-1987EnglishRFQ ASK 3 days [Need to translate] Methods for chemical analysis of zinc concentrates--The Na2 EDTA titrimetric method for the determination of iron content Obsolete GB/T 8151.3-1987

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GB/T 8647.11   GB/T 8151.1   GB/T 8151.10   GB/T 8151.22   GB/T 8151.2   GB/T 8151.11   

Basic data

Standard ID GB/T 8151.3-2012 (GB/T8151.3-2012)
Description (Translated English) Methods for chemical analysis of zinc concentrates -- Part 3: Determination of iron content -- Na2EDTA titrimetric method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H13
Classification of International Standard 77.120.60
Word Count Estimation 6,611
Older Standard (superseded by this standard) GB/T 8151.3-2000
Regulation (derived from) National Standards Bulletin No. 41 of 2012
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 amount of iron in zinc concentrate Determination. This section applies to zinc concentrate Determination of iron content. Measuring range: from 2. 00% to 20. 00%.

GB/T 8151.3-2012: Methods for chemical analysis of zinc concentrates -- Part 3: Determination of iron content -- Na2EDTA titrimetric 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.
ICS77.120.60 H13 National Standards of People's Republic of China Replacing GB/T 8151.3-2000 Methods for chemical analysis of zinc concentrates Part 3. Determination of iron content Na2EDTA titration Part 3. Determinationofironcontent- Issued on. 2013-10-01 2012-12-31 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 8151 "Methods for chemical analysis of zinc concentrates" is divided into 20 parts. --- Part 1. Determination of the amount of zinc Na2EDTA precipitation titration and extraction separation Na2EDTA titration; --- Part 2. Determination of sulfur content - Combustion neutralization titration method; --- Part 3. Determination of iron content Na2EDTA titration; --- Part 4. Determination of silicon dioxide content - Molybdenum blue spectrophotometric method; --- Part 5. Determination of lead content by flame atomic absorption spectrometry; --- Part 6. Determination of copper content - Flame atomic absorption spectrometry; --- Part 7. Determination of arsenic content by hydride generation - atomic fluorescence spectrometry and potassium bromate titration; --- Part 8. Determination of cadmium content by flame atomic absorption spectrometry; --- Part 9. Determination of the amount of fluorine ion selective electrode method; --- Part 10. Determination of tin content by hydride generation - atomic fluorescence spectrometry; --- Part 11. Determination of antimony content hydride generation - atomic fluorescence spectrometry; --- Part 12. Determination of the amount of silver by flame atomic absorption spectrometry; --- Part 13. Determination of the amount of germanium hydride generation - atomic fluorescence spectroscopy and spectrophotometry Phenylfuoron; --- Part 14. Determination of nickel content by flame atomic absorption spectrometry; --- Part 15. Determination of the amount of mercury atomic fluorescence spectrometry; --- Part 16. Determination of cobalt content by flame atomic absorption spectrometry; --- Part 17. Determination of the amount of zinc hydroxide precipitation -Na2EDTA titration; --- Part 18. Determination of the amount of zinc ion exchange -Na2EDTA titration; --- Part 19. Determination of the amount of gold and silver gray Chuihuo lead analysis or assay and flame atomic absorption spectrometry; --- Part 20. Copper, lead, iron, arsenic, cadmium, antimony, calcium, magnesium content - Inductively coupled plasma atomic emission spectrometry. This is Part 3 GB/T 8151's. Rules in this section in accordance with GB/T 1.1-2009 given draft. This Part replaces GB/T 8151.3-2000 "Methods for chemical analysis of zinc concentrates - Determination of iron content." And GB/T 8151.3-2000 Compared to the main changes are as follows. --- Text format has been modified; --- Added precision and test reports. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is responsible for drafting unit. MCC Huludao Nonferrous Metals Group Co., Ltd. This section is drafted. Shuikoushan Hunan Nonferrous Metals Group Co., Ltd., MCC Huludao Nonferrous Metals Group Co., Ltd. Participated in the drafting of this section. Zhuzhou Smelter Group Co., Ltd., Beijing General Research Institute of Mining and Metallurgy, Bayannaoer Zijin Nonferrous Metals Co. Division Hunan Chenzhou Jingui Bank Limited. The main drafters of this section. Zeng Guangming, Luo Yongfeng, Yue Yingping, Wang Yanhua, Daiqin Wen, Xiongfang Xiang, Chen Yan, Jiang Tao seeking, Xiaohua, Wan Yue there, Liu Wei, Duan heroes. This part of the standard replaces the previous editions are. --- GB/T 8151.3-1987, GB/T 8151.3-2000. Methods for chemical analysis of zinc concentrates Part 3. Determination of iron content Na2EDTA titration

1 Scope

This section GB/T 8151 provisions of the determination of the amount of iron zinc concentrates. This section applies to the determination of zinc concentrates - Determination of iron content in the range. 2.00% to 20.00%.

2 Method summary

Samples with hydrochloric acid, nitric acid dissolved cold evaporated to near dryness. Plus a small amount of hydrochloric acid to dissolve salt, add water to maintain a certain volume and precipitated with ammonia. With The precipitate dissolved in hydrochloric acid, to control the volume of about 120mL, keeping the temperature at 50 ℃ ~ 90 ℃, with sulfosalicylic acid as an indicator to Na2EDTA standard titration solution titration solution from red to yellow as the end point.

3 Reagents

Unless otherwise indicated in the analysis using only recognized as analytical reagent and distilled or deionized water or equivalent purity. 3.1 ammonium chloride. 3.2 hydrochloride (ρ1.19g/mL). Nitrate 3.3 (ρ1.42g/mL). 3.4 Ammonia (ρ0.90g/mL). 3.5 hydrochloride (11). 3.6 hydrochloride (111). 3.7 Aqueous ammonia (11). 3.8 lotion. 25g ammonium chloride (3.1) in 500mL water dissolved, add 20mL ammonia (3.4), and mix. 3.9 sulfosalicylic acid solution (100g/L). 3.10 disodium edetate (Na2EDTA) standard titration solution. 3.10.1 preparation. Weigh 20gNa2EDTA (C10H14N2O8Na2 · 2H2O) in a beaker, add about 400mL dissolved in hot water, cold To room temperature. Moved into 1000mL volumetric flask, dilute to the mark, mix, 3d place after calibration. 3.10.2 Calibration. 3.10.2.1 pretreatment of metal wire. metal wire (wFe≥99.9%) cut into small pieces (each less than 80mg), placed in dilute nitric acid (13) soaked 1min ~ 2min, out on ethanol (anhydrous) soaked 1min ~ 2min, removed after repeated dry immediately with filter paper Weigh. 3.10.2.2 Calibration. said pretreated metal wire learn about 0.06g (accurate to 0.0001g) were placed in 300mL beaker, add 20mL of nitric acid (11), after dissolved by heating evaporated to near dryness 10mL hydrochloric acid (3.2), washed with water table dish and cup wall, then steamed in a cold place To nearly dry, with about 10 drops of hydrochloric acid (3.2) to dissolve salt, add water to about 120mL, appears with ammonia (3.7) and to iron hydroxide, plus 10mL hydrochloric acid (3.6), heated to near boiling, remove, add about 1mL sulfosalicylic acid solution (3.9), the standard titration solution Na2EDTA (3.10) titration until the solution changed from red to yellow as the end point. Along with the calibration blank test. According to equation (1) to calculate the concentration Na2EDTA standard titration solution. c = m155.85 × (V2-V1) (1)

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