YS/T 281.18-2011 English PDF

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YS/T 281.18-2011: Methods for chemical analysis of cobalt. Part 18: Determination of sodium content. Flame atomic absorption spectrometry
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
YS/T 281.18-2011	189	Add to Cart	3 days	Methods for chemical analysis of cobalt. Part 18: Determination of sodium content. Flame atomic absorption spectrometry	Valid

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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 281.18-2011 (YS/T281.18-2011)
Description (Translated English): Methods for chemical analysis of cobalt. Part 18: Determination of sodium content. Flame atomic absorption spectrometry
Sector / Industry: Nonferrous Metallurgy Industry Standard (Recommended)
Classification of Chinese Standard: H13
Classification of International Standard: 77.120.70
Word Count Estimation: 7,758
Date of Issue: 2011-12-20
Date of Implementation: 2012-07-01
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 sodium content. This section applies to the determination of cobalt in sodium content. Measuring range: 0. 001% to 0. 06%.

YS/T 281.18-2011: Methods for chemical analysis of cobalt. Part 18: Determination of sodium content. Flame atomic absorption spectrometry

---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 18. Determination of sodium content.Flame atomic absorption spectrometry ICS 77.120.70 H13 People's Republic of China Nonferrous Metals Industry Standard Cobalt chemical analysis method Part 18. determination of sodium content Flame atomic absorption spectrometry Part 18. Determination ofsodiumcontent- 2011-12-20 release 2012-07-01 Implementation Issued by the Ministry of Industry and Information Technology of the People's Republic of China

Foreword

YS/T 281 "cobalt chemical analysis method" is divided into the following 20 parts. Part 1. Determination of iron content - Sulfosalicylic acid spectrophotometric method Part 2. Determination of aluminum content - Chromazu S spectrophotometric method 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 spectrometric method - Part 7. Determination of zinc content - Flame atomic absorption spectrometric method Part 8. Determination of cadmium content - Flame atomic absorption spectrometric method Part 9. Determination of lead content - Flame atomic absorption spectrometric method Part 10. Determination of nickel content - Flame atomic absorption spectrometric method - Part 11. Determination of copper and manganese - Flame atomic absorption spectrometric method - Part 12. Determination of arsenic, antimony, bismuth, tin and lead - Electrothermal atomic absorption spectrometry - Part 13. Determination of sulfur content - High frequency induction furnace combustion infrared absorption method - Part 14. Determination of carbon content - High frequency induction furnace combustion infrared absorption method - Part 15. Determination of arsenic, antimony and bismuth - Hydride generation - atomic fluorescence spectrometry - Part 16. Determination of the amount of arsenic, cadmium, copper, zinc, lead, bismuth, tin, antimony, silicon, manganese, iron, nickel, aluminum and magnesium. Spectrum method - Part 17. Determination of aluminum, manganese, nickel, copper, zinc, cadmium, tin, antimony, lead and bismuth inductively coupled plasma mass spectrometry - Part 18. Determination of sodium content - Flame atomic absorption spectrometric method - Part 19. Determination of calcium, magnesium, manganese, iron, cadmium and zinc - Inductively coupled plasma emission spectrometric method - Part 20. Determination of the amount of oxygen - Infrared absorption method This section is part 18 of YS/T 281. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243) proposed and centralized. This standard is responsible for drafting units. Jinchuan Group Co., Ltd., Beijing Mining and Metallurgy Research Institute. This part is responsible for the drafting of the unit. Shenzhen Green US High-tech Co., Ltd. This part participates in the drafting unit. Jiangsu Kailike Cobalt Co., Ltd., Jinchuan Group Co., Ltd., Zhejiang Huayou Cobalt Co., Ltd. the company. The main drafters of this part. Wang Li, Zhang Xiang, Xu Kaihua, Wu Yigen, Lv Qingcheng, Zhang Jihong, Zhu Zhenqing, Xie Baihua. Cobalt chemical analysis method Part 18. determination of sodium content Flame atomic absorption spectrometry WARNING. Personnel using this standard should have experience working in a regular laboratory. This standard does not indicate all possible security issues. Make It is the responsibility of the user to take appropriate safety and health measures and to ensure compliance with the conditions set forth in the relevant national regulations.

1 Scope

This part of YS/T 281 specifies the determination of sodium content in cobalt. This part applies to the determination of sodium in cobalt. Measuring range. 0.001% to 0.06%.

2 principle of the method

The sample was dissolved in nitric acid, and the air-acetylene flame was used in a dilute nitric acid medium to measure its absorption at 589.0 nm of an atomic absorption spectrometer Luminosity. The standard solution should contain the same concentration of cobalt matrix as the sample solution.

3 reagent

If no special instructions, the reagents used for the analysis of pure reagents, preparation and analysis of water are secondary distilled water or considerable purity of the experiment Room water. 3.1 metal cobalt (wCo ≥ 99.98%, wNa < 0.0005%). 3.2 nitric acid (ρ = 1.42g/mL), excellent grade pure. 3.3 nitric acid (1 1). 3.4 Cobalt Substrate Solution. Weigh 5.00 g of metal cobalt (3.1), placed in a 400 mL quartz beaker, add 40 mL of nitric acid (3.3), heat to Dissolve completely, slightly boil off the nitrogen oxide, remove and cool to room temperature. Into the 100mL quartz volumetric flask, the water volume, mix. This solution 1 mL of liquid contains 50 mg of cobalt. 3.5 sodium standard storage solution. Weigh 0.2542g sodium chloride reference reagent (pre-dried at 550 ℃ to constant weight, and in the dryer in the cold But at room temperature) placed in 150mL quartz beaker, add water dissolved, into 1000mL quartz volumetric flask, the water volume, mix. This solution Liquid 1mL containing 100μg sodium. 3.6 sodium standard solution. Remove 10.00mL sodium standard storage solution (3.5) in.200mL quartz volumetric flask in water volume, mix. this Solution 1 mL contains 5 μg of sodium.

4 instruments

Atomic Absorption Spectrometer with Sodium Hollow Cathode Lamp. In the best working conditions of the instrument, who can achieve the following indicators can be used. Sensitivity. The concentration of sodium should be no more than 0.005 μg/mL in solutions consistent with the matrix of the test sample. --- working curve linear. the working curve by the concentration of divided into five sections, the highest section of the difference between the absorbance difference and the lowest of the difference in absorbance Ratio should not be less than 0.85. ......

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