YS/T 807.14-2012 English PDF

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 807.14-2012	239	Add to Cart	3 days	Chemical analysis methods of aluminum hardeners. Part 14: Determination of strontium content. EDTA titrimetric method	Obsolete

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Basic data

Standard ID: YS/T 807.14-2012 (YS/T807.14-2012)
Description (Translated English): Chemical analysis methods of aluminum hardeners. Part 14: Determination of strontium content. EDTA titrimetric method
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: H12
Classification of International Standard: 77.120.10
Word Count Estimation: 6,629
Regulation (derived from): Ministry of Industry and Information Technology Bulletin No. 55 of 2012; industry standard filing Notice 2013 No. 1 (Total No. 157);
Issuing agency(ies): Ministry of Industry and Information Technology
Summary: This standard specifies the content of aluminum alloy with indistinct Determination. This standard applies to aluminum alloy with silver content. Determination range of from 3. 00% to 12. 00%.

YS/T 807.14-2012: Chemical analysis methods of aluminum hardeners. Part 14: Determination of strontium content. EDTA titrimetric method

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Chemical analysis methods of aluminum hardeners.Part 14. Determination of strontium content.EDTA titrimetric method ICS 77.120.10 H12 People's Republic of China Nonferrous Metals Industry Standard Intermediate aluminum alloys - Determination of strontium content. Part 14 EDTA titration Part 14. Determinationofstrontiumcontent- Issued on. 2012-11-07 2013-03-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

YS/T 807-2012 "aluminum master alloy chemical analysis method" is divided into 14 parts. --- Part 1. Determination of iron content dichromate method; --- Part 2. Determination of manganese content Potassium periodate spectrophotometric method; --- Part 3. Determination of nickel by titration with EDTA; --- Part 4. Determination of chromium content ammonium persulfate oxidation - ammonium ferrous sulfate titration; --- Part 5. Determination of zirconium content EDTA titration; --- Part 6. Determination of boron ion selective electrode method; --- Part 7. Determination of beryllium content Eriochrome cyanide blue R spectrophotometry; --- Part 8. Determination of antimony content Potassium iodide spectrophotometry; --- Part 9. Determination of bismuth content of potassium iodide spectrophotometry; --- Part 10. Determination of potassium content by flame atomic absorption spectrometry; --- Part 11. Determination of sodium content by flame atomic absorption spectrometry; --- Part 12. Determination of copper content of sodium thiosulfate titration; --- Part 13. Determination of vanadium content ammonium ferrous sulfate titration; --- Part 14. Determination of strontium EDTA titration. This section YS/T Part 14 807. This section drafted in accordance with GB/T 1.1-2009 given rules. 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. It participated in the drafting of this section. Nanjing Yunhai Special Metals Co., Ltd., Beijing Nonferrous Metal Research Institute. The main drafters of this section. Liu Qing, Ding Jianfeng, Zhu Yu Qiu, Xue Ning, Liu Bing, Hu Xuan, Gao Zhiyong. Intermediate aluminum alloys - Determination of strontium content. Part 14 EDTA titration Warning. Use of this standard shall have a person experiences regular laboratory work. This standard does not point out 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 YS/T 807 specifies the method for determination of aluminum alloy with strontium content. This section applies to the determination of aluminum alloy with strontium content. Determination of the range of 3.00% - 12.00%.

2 Method summary

The sample with hydrochloric acid and hydrogen peroxide dissolved, (pH 6.5 to 7.5) solution to hexamethylenetetramine and weak alkaline copper reagent separation Iron, aluminum, manganese, and other metal ions, move the filtrate added magnesium, chrome black T as indicator to control the pH value of 10, standard with EDTA Standard solution titration strontium content.

3 Reagents

Unless otherwise indicated in the analysis using only the gifted class pure reagents and sub-boiling distilled water or potassium. 3.1 Hydrogen peroxide (ρ = 1.10g/mL). 3.2 ethanol. Aqueous ammonia 3.3 (ρ = 0.89g/mL). 3.4 hydrochloride (11). 3.5 hexamethylenetetramine solution (250g/L). 3.6 Copper reagent solution (50g/L). Weigh 5g of copper reagent (diethylamino sodium thiosulfate) was dissolved in 25mL absolute ethanol (3.2), washed with water Diluted to 100mL. 3.7 ammonia - ammonium chloride buffer solution (pH value of 10). Weigh 54g of ammonium chloride (analytical grade) was dissolved in 200mL of water, 350mL added ammonia Water (3.3), diluted to 1000mL. 3.8 chrome black T indicator. Weigh 0.2g chrome black T dissolved in 10mL ammonia (3.3) and 40mL of anhydrous ethanol (3.2), dissolved completely, Stored in brown dropper bottle. 3.9 strontium standard solution (1.0mg/mL). Weigh 1.6850g strontium carbonate (SrCO3, ≥99.99%) was dissolved in an appropriate amount of hydrochloric acid (3.4), and Heated to boiling, cooled, diluted with water to 1000mL, and mix the solution 1mL containing 1.0mg strontium. 3.10 Zinc standard solution (0.0200mol/L). Weigh 1.3076g remove the metal surface of the zinc oxide film (≥99.90%) placed 300mL beaker, was added 20mL of hydrochloric acid (3.4), heated to dissolve completely evaporated 10mL, cooled and transferred to 1000mL volumetric flask, with Dilute with water to volume, and mix. 3.11 Mg standard solution (0.0200mol/L). Weigh 0.4861g of magnesium metal (≥99.9%) into 300mL beaker, was added 30mL Hydrochloric acid (3.4), completely dissolved by heating, cooled, diluted with water to 1000mL. ......

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