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GB/T 13748.9-2013 English PDF

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GB/T 13748.9-2013: Chemical analysis methods of magnesium and magnesium alloys -- Part 9: Determination of iron content -- Orthopenanthroline spectrophotometric method
Status: Valid

GB/T 13748.9: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 13748.9-2013English189 Add to Cart 3 days [Need to translate] Chemical analysis methods of magnesium and magnesium alloys -- Part 9: Determination of iron content -- Orthopenanthroline spectrophotometric method Valid GB/T 13748.9-2013
GB/T 13748.9-2005English319 Add to Cart 3 days [Need to translate] Chemical analysis methods of magnesium and magnesium alloys -- Determination of iron content -- Orthopenanthroline spectrophotometric method Obsolete GB/T 13748.9-2005
GB/T 13748.9-1992English199 Add to Cart 2 days [Need to translate] Magnesium and its alloys--Determination of nickel content--Dimethylyoxime spectrophotometric method Obsolete GB/T 13748.9-1992

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Basic data

Standard ID GB/T 13748.9-2013 (GB/T13748.9-2013)
Description (Translated English) Chemical analysis methods of magnesium and magnesium alloys -- Part 9: Determination of iron content -- Orthopenanthroline spectrophotometric method
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard H12
Classification of International Standard 77.120.10
Word Count Estimation 8,860
Older Standard (superseded by this standard) GB/T 13748.9-2005
Adopted Standard ISO 792-1973; NEQ
Regulation (derived from) National Standards Bulletin 2013 No. 17
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 iron content of magnesium and magnesium alloys Determination. This standard applies to: Magnesium and magnesium alloys of iron content determined. Measurement range

GB/T 13748.9-2013: Chemical analysis methods of magnesium and magnesium alloys -- Part 9: Determination of iron content -- Orthopenanthroline spectrophotometric 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.
Chemical analysis methods of magnesium and magnesium alloys Part 9.. Determination of iron content Orthopenanthroline spectrophotometric method. ICS 77.120.10 H12 National Standards of People's Republic of China Replacing GB/T 13748.9-2005 Magnesium and its alloys - Part 9. Determination of iron content Phenanthroline spectrophotometry Part 9. Determinationofironcontent- (ISO 792. 1973, Magnesiumandmagnesiumaloys- Determinationofiron-Orthophenanthrolinephotometricmethod, NEQ) Issued on. 2014-05-01 2013-09-06 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. This section GB/T 13748 Part 9. The object is to have a standard adoption of Part 1, Part 4, Section 7, Section 8, Section 9, Section 10, Section 12, Part 14, Part 159 sections revised. This section drafted in accordance with GB/T 1.1-2009 given rules. This Part replaces GB/T 13748.9-2005 "Determination of magnesium and magnesium alloys analysis of iron content phenanthroline spectrophotometric Spectrophotometry. " This section compared with the GB/T 13748.9-2005, the main technical changes are as follows. --- 6.5.2 Modify as "reagent blank solution (without iron standard solution were) as a reference." --- Amend Table 2 of "mass fraction of iron /%" column " > from 0.045 to 0.080" to " > 0.040 ~ 0.080." --- To increase the "lab report" requirement; --- Remove the "quality assurance and control" requirements. This section uses redrafted reference method ISO 792. 1973 "Determination of magnesium and magnesium alloys of iron phenanthroline photometric method", and ISO 792. 1973 non-equivalent. 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 is drafted. Northeast Light Alloy Co., Ltd., Fushun Aluminum Co., Ltd. Drafters of this section. Zhou Bing, Liu Sha, Chang Wan-jin, namely Jubilee, Fang Ying, Xu Tieling, Ji Yanli, Dong Xiaolin. This part of the standard replaces the previous editions are. --- GB/T 13748.9-1992, GB/T 13748.9-2005; --- GB/T 4374.2-1984. Magnesium and its alloys - Part 9. Determination of iron content Phenanthroline spectrophotometry

1 Scope

GB/T 13748 provisions of this part of the magnesium and magnesium alloys Determination of iron content. This section applies to the determination of magnesium and magnesium alloys in the iron content. Measurement range. 0.0010% to 1.00%.

2 Method summary

The sample is dissolved in hydrochloric acid with hydroxylamine hydrochloride reduced iron at pH3.5 ~ pH4.5 acetate buffer medium, divalent iron ions and nitrous o Philippines miscellaneous color, spectrophotometer measuring the absorbance at 510nm, whereby the determination of iron content. Interference of an excess of zinc phenanthroline eliminate; the impact of zirconium by extending the color of time to eliminate.

3 Reagents

3.1 Hydrofluoric acid (ρ = 1.14g/mL). 3.2 hydrochloride (11). 3.3 hydroxylamine hydrochloride (10g/L). 3.4 acetic acid - sodium acetate buffer solution. Weigh 272g of sodium acetate (CH3COONa · 3H2O), dissolved using 500mL of water, filtered, added Into 240mL acetic acid (ρ = 1.05g/mL), diluted with water to 1000mL, and mix. 3.5 phenanthroline solution (10g/L). 3.6 Iron Standard stock solution (250μg/mL), prepared by one of the following methods. 3.6.1 Weigh 1.7556g ammonium ferrous sulfate [(NH4) 2Fe (SO4) 2 · 6H2O] (reference material) in 100mL beaker, add into the The amount of water and 20mL of hydrochloric acid (3.2) to dissolve. The solution is transferred to 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL Containing 250μg iron. 3.6.2 Weigh 0.3575g previously calcined at 600 ℃ pure iron oxide [w (Fe2O3) ≥99.9%] in 100mL beaker Added 30mL of hydrochloric acid (3.2), heated until completely dissolved, cooled and transferred to 1000mL volumetric flask, dilute with water to volume, and mix. This solution 1mL containing 250μg iron. 3.7 iron standard solution (25μg/mL). Pipette 50.00mL iron standard stock solution (3.6.1 or 3.6.2) in 500mL flask, to Dilute with water to volume, and mix. This solution 1mL containing 25μg iron. 3.8 iron standard solution (5μg/mL). Pipette 50.00mL iron standard solution (3.7) in 250mL flask, diluted with water to the mark, Mix well. This solution 1mL containing 5μg iron (when used with now).

4 Instrument

Spectrophotometer.

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