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YS/T 281.2-2011 English PDF

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YS/T 281.2-2011: Methods for chemical analysis of cobalt. Part 2: Determination of aluminum content. Chromeazurol S spectrophotometry
Status: Valid

YS/T 281.2: Evolution and historical versions

Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
YS/T 281.2-2011English189 Add to Cart 3 days [Need to translate] Methods for chemical analysis of cobalt. Part 2: Determination of aluminum content. Chromeazurol S spectrophotometry Valid YS/T 281.2-2011
YS/T 281.2-1994English199 Add to Cart 2 days [Need to translate] Cobalt - Determination of aluminium content - Chromazurol S-P-octyl polyethylene glycol phenyl ether-tetradecyl phridinium bromine mixed micellar solubilization spectrophotometric method Obsolete YS/T 281.2-1994

PDF similar to YS/T 281.2-2011


Standard similar to YS/T 281.2-2011

YS/T 252.6   GB/T 3884.2   GB/T 3884.1   YS/T 281.11   YS/T 281.1   YS/T 281.10   

Basic data

Standard ID YS/T 281.2-2011 (YS/T281.2-2011)
Description (Translated English) Methods for chemical analysis of cobalt. Part 2: Determination of aluminum content. Chromeazurol S spectrophotometry
Sector / Industry Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard H13
Classification of International Standard 77.120.70
Word Count Estimation 7,754
Date of Issue 2011-12-20
Date of Implementation 2012-07-01
Older Standard (superseded by this standard) YS/T 281.2-1994
Regulation (derived from) ?MIIT Announcement 2011 No.43
Issuing agency(ies) Ministry of Industry and Information Technology
Summary This standard specifies the method for the determination of cobalt in aluminum content. This standard applies to the determination of cobalt in aluminum content. Measuring range: 0. 00030% to 0. 0050%.

YS/T 281.2-2011: Methods for chemical analysis of cobalt. Part 2: Determination of aluminum content. Chromeazurol S spectrophotometry


---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.
Methods for chemical analysis of cobalt.Part 2. Determination of aluminum content.Chromeazurol S spectrophotometry ICS 77.120.70 H13 People's Republic of China Nonferrous Metals Industry Standard Replacing YS/T 281.2-1994 Methods for chemical analysis of cobalt - Part 2. Determination of aluminum content Chromium Azure S Spectrophotometry Part 2. Determinationofaluminumcontent- Issued on. 2011-12-20 2012-07-01 implementation Ministry of Industry and Information Technology of the People's Republic of China released

Foreword

YS/T 281 "cobalt chemical analysis method" is divided into the following 20 sections. --- Part 1. Determination of iron content sulfonic acid spectrophotometry --- Part 2. Determination of the amount of chrome aluminum Azure S Spectrophotometry --- Part 3. Determination of silicon content - Molybdenum blue spectrophotometric method --- Part 4. Determination of arsenic content - Molybdenum blue spectrophotometric method --- Part 5. Determination of phosphorus content - Molybdenum blue spectrophotometric method --- Part 6. Determination of magnesium content - Flame atomic absorption spectrometry --- Part 7. Determination of zinc content - Flame atomic absorption spectrometry --- Part 8. Determination of cadmium content by flame atomic absorption spectrometry --- Part 9. Determination of lead content - flame atomic absorption spectrometry --- Part 10. Determination of nickel content by flame atomic absorption spectrometry --- Part 11. Flame atomic copper, manganese content absorption spectrometry --- Part 12. arsenic, antimony, bismuth, tin, lead and determining the amount of electrothermal atomic absorption spectrometry --- Part 13. Determination of sulfur content high frequency induction furnace combustion infrared absorption method --- Part 14. Determination of the amount of carbon high-frequency induction furnace combustion infrared absorption method --- Part 15. arsenic, antimony, bismuth contents - Hydride Generation - Atomic Fluorescence Spectrometry --- Part 16. Determination of DC arc atomic arsenic, cadmium, copper, zinc, lead, bismuth, tin, antimony, silicon, manganese, iron, nickel, aluminum, magnesium content of the emitted light Spectroscopy --- Part 17. aluminum, manganese, nickel, copper, zinc, cadmium, tin, antimony, lead, bismuth content - Inductively Coupled Plasma Mass Spectrometry --- Part 18. Determination of sodium content by flame atomic absorption spectrometry --- Part 19. calcium, magnesium, manganese, iron, cadmium, zinc content - Inductively coupled plasma atomic emission spectrometry --- Part 20. Determination of oxygen content - Impulse - infrared absorption method This section YS/T 281 Part 2. This section drafted in accordance with GB/T 1.1-2009 given rules. The partial replacement of YS/T 281.2-1994 "Methods for chemical analysis of cobalt chrome azure S spectrophotometric determination of aluminum content." versus YS/T 281.2-1994 compared, this section there are major changes as follows. --- Measured by the scope of 0.0003% ~ 0.002% revised to 0.00030% to 0.0050%; --- Text format has been modified, supplemented with quality assurance and control provisions, increase the repeatability limit and reproducibility limit; --- Complement the test reporting requirements. The non-ferrous metal part by the National Standardization Technical Committee (SAC/TC243) and focal points. This standard is drafted by. Jinchuan Group Co., Ltd., Beijing General Research Institute of Mining and Metallurgy. This section is responsible for drafting unit. Jinchuan Group Limited. Participated in the drafting of this section. Beijing Mining Research Institute, Zhejiang Huayou Cobalt Co. Ltd.. The main drafters of this section. hair Zhang Zhi, Li Xikai, Lvqing Cheng, Dong Liping, Pan Meirong, Feng advanced color Ruan Gui Li Gram. This part of the standard replaces the previous editions are. --- YS/T 281.2-1994. Methods for chemical analysis of cobalt - Part 2. Determination of aluminum content Chromium Azure S Spectrophotometry Warning. Use of this standard shall have a person experiences regular laboratory work. This standard does not point out all possible security issues. Make With those who 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 281 provides for determination of cobalt in aluminum content. This section applies to the determination of cobalt in aluminum content. Measurement range. 0.00030% to 0.0050%.

2 Method summary

Sample was dissolved in nitric acid at pH4.6 ~ 5.2, the use of ethyl benzoate and aluminum benzoate cobalt extraction separation. With hydrochloric acid trans The organic phase was extracted aluminum. Aluminum and CAS S- bromo emulsifier OP- cylpyridinium form a complex at 610nm wavelength spectrophotometer Measured absorbance.

3 Reagents

Unless otherwise specified, the reagents were analytical reagent solution preparation and analysis are secondary distilled water or equivalent purity test Room with water. 3.1 hydrochloric acid (ρ = 1.19g/mL) of high purity. 3.2 nitric acid (ρ = 1.42g/mL) of high purity. 3.3 ammonium hydroxide (ρ = 0.90g/mL) of high purity. 3.4 hydrochloride (11). 3.5 hydrochloric acid (119). 3.6 ammonium hydroxide solution (120), stored in a plastic bottle. 3.7 nitric acid (32). 3.8 Chromium Azure S solution (1g/L). Weigh 0.20g Chromium Azure S dissolved in 100mL of water, diluted to 200mL with ethanol. 3.9 polyethylene glycol octylphenyl ether (emulsifier OP) solution (1999). Bromo cylpyridinium 3.10 (TPB) solution (4g/L). 3.11 acetic acid - ammonium acetate buffer solution. A 485mL solution of ammonium acetate (4mol/L) was diluted to 500mL with acetic acid (4mol/L), Mix well. 3.12 ammonium benzoate solution (120g/L). Weigh 12g of ammonium benzoate was dissolved in water, adding 2 to 3 drops of ammonium hydroxide (3.3) dissolved End Full, dilute with water to 100mL. 3.13 Ammonium benzoate lotion (20g/L). Weigh 2g ammonium benzoate was dissolved in 100mL of water, carefully adjust the pH with dilute hydrochloric acid on pH meter Is between 4.6 to 4.8. 3.14 benzoic acid - ethyl acetate solution (50g/L). Weigh 25g of benzoic acid dissolved in ethyl acetate, diluted to 500mL with ethyl acetate. 3.15 hydroxylamine hydrochloride solution (100g/L). the time is now equipped with. 3.16 ascorbic acid solution (10g/L). the time is now equipped with.

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