YS/T 281.11-2011Methods for chemical analysis of cobalt. Part 11: Determination of copper and manganese contents. Flame atomic absorption spectrometry (English PDF)

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 11.

This section drafted in accordance with GB/T 1.1-2009 given rules.

The partial replacement of YS/T 281.11-1994 "cobalt chemical analysis by flame atomic absorption spectrometric method for the determination of copper, manganese content." versus YS/T 281.11-1994 compared, this section there are major changes as follows.

--- Measured by the scope of 0.0005% to 0.15% revised to 0.00050% to 0.30%;

--- 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.

1 Scope

This section YS/T 281 provides for determination of copper, cobalt, manganese content.

This section applies to cobalt Determination of copper, manganese content. Measurement range. 0.00050% to 0.30%.

2 Principle of the method

Sample decomposition with nitric acid, in dilute nitric acid medium, using air - acetylene flame atomic absorption spectrometer, respectively, at a wavelength of 324.7nm Absorbance was measured at copper, manganese absorbance was measured at 279.5nm.

In the standard solution and sample solution should contain the same concentration of cobalt matrix.

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.

4 Instrument

Atomic absorption spectrometer, with copper, manganese hollow cathode lamp.

Under optimum working conditions for those who can reach the following indicators can be used.

--- Sensitivity. basically the same test solution and measurement solution, characteristic concentration copper, manganese should not exceed 0.05µg/mL.

--- Precision. standard solution with the highest concentration of 10 times the absorbance measurements, the standard deviation should not exceed 1.5% of the average absorbance;

The lowest concentration of standard solution used (instead of "zero" standard solution) absorbance measured 10 times, and the standard deviation should not exceed the maximum concentration