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GB/T 13748.15-2013 English PDF

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GB/T 13748.15-2013: Chemical analysis methods of magnesium and magnesium alloys -- Part 15: Determination of zinc content
Status: Valid

GB/T 13748.15: Historical versions

Standard IDUSDBUY PDFLead-DaysStandard Title (Description)Status
GB/T 13748.15-2013299 Add to Cart 3 days Chemical analysis methods of magnesium and magnesium alloys -- Part 15: Determination of zinc content Valid
GB/T 13748.15-2005439 Add to Cart 4 days Chemical analysis methods of magnesium and magnesium alloys -- Determination of zinc content Obsolete

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GB/T 7999   GB/T 14849.5   GB/T 14849.4   GB/T 13748.24   GB/T 13748.23   GB/T 13748.20   

Basic data

Standard ID: GB/T 13748.15-2013 (GB/T13748.15-2013)
Description (Translated English): Chemical analysis methods of magnesium and magnesium alloys -- Part 15: Determination of zinc content
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: H12
Classification of International Standard: 77.120.20
Word Count Estimation: 13,126
Older Standard (superseded by this standard): GB/T 13748.15-2005
Adopted Standard: ISO 4194-1981, NEQ; ISO 1793-1978, NEQ
Regulation (derived from): National Standards Bulletin 2013 No. 23
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 method for the determination of magnesium and magnesium alloy of zinc content. One of the standard methods for the determination of magnesium and magnesium alloy of zinc content. A method of measuring the range of from 0. 10% t

GB/T 13748.15-2013: Chemical analysis methods of magnesium and magnesium alloys -- Part 15: Determination of zinc content


---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.
Chemical analysis methods of magnesium and magnesium alloys Part 15. Determination of zinc content ICS 77.120.20 H12 National Standards of People's Republic of China Replacing GB/T 13748.15-2005 Magnesium and its alloys - Part 15. Determination of zinc content -Part 15. Determinationofzinccontent (ISO 4194. 1981, Magnesiumaloys-Determinationofzinccontent -Flameatomicabsorptionspectrometricmethod, NEQ; ISO 1783. 1978, Magnesiumaloys-Determinationofzinc-Volumetricmethod, NEQ) Issued on. 2014-08-01 2013-11-27 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

GB/T 13748 "analysis methods of magnesium and magnesium alloys" is divided into 22 parts. --- Part 1. Determination of aluminum content; --- Part 2. Determination of tin content pyrocatechol violet spectrophotometry; --- Part 3. Determination of lithium content Flame atomic absorption spectrometry; --- Part 4. Determination of manganese content periodate spectrophotometry; --- Part 5. Determination of yttrium content inductor coupled plasma atomic emission spectrometry; --- Part 6. Determination of silver by flame atomic absorption spectrometry; --- Part 7. Determination of zirconium content; --- Part 8. rare earth content Gravimetric method; --- Part 9. Determination of iron content phenanthroline spectrophotometry; --- Part 10. Determination of silicon content - Molybdenum blue spectrophotometric method; --- Part 11. Determination of beryllium content Eriochrome cyanine R spectrophotometry; --- Part 12. Determination of copper content; --- Part 13. Determination of lead content by flame atomic absorption spectrometry; --- Part 14. Determination of nickel dimethylglyoxime spectrophotometry; --- Part 15. Determination of zinc content; --- Part 16. Determination of calcium content by flame atomic absorption spectrometry; --- Part 17. potassium content and sodium content - Flame atomic absorption spectrometry; --- Part 18. Determination of the chlorine content of silver chloride turbidimetric method; --- Part 19. Determination of titanium content security for spectrophotometric morpholino than methane; --- Part 20. ICP-AES determination of element contents; --- Part 21. photoelectric direct reading atomic emission spectroscopy method element content; --- Part 22. Determination of thorium content. The object is to have a standard adoption of Part 1, Part 4, Section 7, Section 8, Section 9, Section 10, Section 12, Part 9 Part 14, Part 15 and other amendments. This is Part 15. This section is in accordance with GB/T 1.1-2009 given rules drafted. This Part replaces GB/T 13748.15-2005 "magnesium and magnesium alloys Determination of zinc content analysis methods." This section compared with the GB/T 13748.15-2005, the main technical changes are as follows. --- Revised, "a method of flame atomic absorption spectrometry" in Table 1 dilution volume error. zinc mass fraction of 0.010% 1.00% dilution volume of 50mL, mass fraction of zinc diluted volume of 100mL at 1.00% - 7.00%; --- "A method of flame atomic absorption spectrometry" measurement range of 0.10 to 7.00% by the expansion of 0.010% ~ 10.00%; increased Zinc mass fraction of 7.00% to 10.00% of the sample mass of 0.50g; increasing the zinc content 7.00% 10.00% of the allowable difference of 0.40%; --- Modification method II "Method Synopsis" to "sample in hydrochloric acid - hydrogen peroxide dissolved zinc extraction with tri-n-octyl amine,." modify 4.4.4.5 for the "organic coherence after standing layered filter to 1cm absorption cell." Modify 4.4.5.2 as "reagent Blank solution (without zinc standard solution were) as a reference. "; --- Increase "Method three titration method"; --- The method I. Method II and Method Three "scope" merged into Chapter 1, "scope"; --- Increased Chapter 2, "General" requirements; --- Increased Chapter 6, "lab report" requirement; --- Remove the "quality assurance and control" requirements; --- Prepared according to standard rules of text editing finishing; --- Increased the arbitration provisions. This section includes three methods, "a method" is GB/T 13748.15-2005 method a "magnesium and magnesium alloys Analysis Zinc content - Flame atomic absorption spectrometry reconfirm "in. "Method II" is GB/T 13748.15-2005 Method II "and magnesium Magnesium alloys - Determination of zinc content PAN spectrophotometry "reconfirmed. "Method three" is a new method for increasing "Titration law". This section method using a reference to redraft the law ISO 4194. 1981 "magnesium alloy of zinc content - Flame atomic absorption spectrometric Law ", and ISO 4194. 1981 non-equivalent. This section method using a reference to redraft the law ISO 1783. 1973 "Determination of magnesium alloy zinc titration Law", and ISO 1783. 1973 non-equivalent. "A method" in this section for the zinc content of 0.10% and 7.00% magnesium alloy arbitration method, "Method II" for the zinc content in 0.0050% to 0.100% of magnesium and magnesium alloy arbitration. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) centralized. This section is responsible for drafting units. Aluminum Corporation of China Zhengzhou Research Institute, China Nonferrous Metals Industry Quality Standards and Metrology Institute The study. This section was drafted by a method. Aluminum Corporation of China Zhengzhou Research Institute. This section Method two drafting units. Northeast Light Alloy Co., Ltd., Zhengzhou Research Institute, Aluminum Corporation of China, Ningxia Huayuan Metallurgical Industries Limited. This section was drafted by Method three. Northeast Light Alloy limited liability company. The drafters of a partial method. Feng Jingdong, Wang Shuhua, Mawen Min, Zhang Wei-hua. Method two drafters of this section. Zhou Bing, Ma Jinping, cold Xiao Wei, Shi Lei, WANG Xiu-rong, Zhang Wei-hua, Ding Hongtao. This part of the drafters Method three. Li Zhi, Liu Shuangqing, Shuang Cui, Zhao Shizhuo, Hongxia, in particular stone, Shi Lixin. This part of the standard replaces the previous version of the case. --- GB/T 13748.15-2005, GB/T 13748.15-1992. Magnesium and its alloys - Part 15. Determination of zinc content

1 Scope

This section provides magnesium and magnesium alloys Determination of zinc content. This section applies to a method for the determination of magnesium and magnesium alloys zinc content. The method of measuring a range of 0.10% to 10.00%. This part of the second method for the determination of primary ingot zinc content. Determination range of 0.0050% to 0.100%. This section applies to three methods of magnesium and magnesium alloys (excluding Cd) Determination of zinc content. Determination of the range of 0.10% to 8.0%.

2 General

2.1 Unless otherwise indicated, this part of the reagents used are in line with national standards or industry standard analytical reagent, the water are distilled water. 2.2 specimens should be processed to a thickness of less than 1mm debris.

3 a method of flame atomic absorption spectrometry

3.1 Method summary Samples with hydrochloric acid, hydrofluoric acid and hydrogen peroxide decomposition in the air - acetylene flame retardancy poor, atomic absorption spectrometer at a wavelength of 213.9nm Measuring absorbance of zinc. 3.2 Reagents 3.2.1 Magnesium [w (Mg) ≥99.9%, no zinc]. 3.2.2 hydrochloric acid (ρ = 1.19g/mL). 3.2.3 hydrofluoric acid (ρ = 1.14g/mL). 3.2.4 Hydrogen peroxide (ρ = 1.10g/mL). 3.2.5 standard zinc stock solution. one prepared in the following manner. 3.2.5.1 Weigh 1.0000g zinc metal [w (Zn) ≥99.9%] placed in 400mL beaker, covered table dish, add 50mL water, add 25mL hydrochloric acid (3.2.2), low-temperature heating and completely dissolved and transferred to 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL containing 1mg zinc. 3.2.5.2 Weigh 1.2600g reference reagent zinc oxide (pre-ignition 1h at 1000 ℃, and cooled to room temperature in a desiccator) placed 400mL beaker, covered table dish, was added 25mL of hydrochloric acid (3.2.2) was dissolved. Moved into 1000mL volumetric flask, dilute to the mark, Mix well. 1mL solution containing 1mg zinc. 3.2.6 Zinc Standard Solution A. Pipette 10.00mL standard zinc stock solution (3.2.5) in 200mL volumetric flask, dilute to the mark, mix uniform. This solution 1mL containing 50μg zinc. 3.2.7 Zinc standard solution B. Pipette 10.00mL standard zinc stock solution (3.2.5) in 500mL volumetric flask, dilute to the mark, mix uniform. This solution 1mL containing 20μg zinc. 3.2.8 magnesium matrix solution (1mg/mL). Weigh 1.0000g of magnesium (3.2.1) into 250mL beaker, covered table dish, add 50mL Water was added in a total volume of 20mL hydrochloric acid (3.2.2), low-temperature heating and completely dissolved. 5 drops of hydrogen peroxide was added, boiled for 5min, cooled
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