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GB/T 42511-2023 English PDF (GBT42511-2023)

GB/T 42511-2023 English PDF (GBT42511-2023)

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GB/T 42511-2023: Hardmetals -- Determination of calcium, copper, iron, potassium, magnesium, manganese, sodium, nickel and zinc in cobalt metal powders -- Flame atomic absorption spectrometric method

This Document describes a method for the determination of calcium, copper, iron, potassium, magnesium, manganese, sodium, nickel and zinc in cobalt powders by flame atomic absorption spectrometry. This Document is applicable to the determination of calcium, copper, iron, potassium, magnesium, manganese, sodium, nickel and zinc content in cobalt powder. The determination range (mass fraction) of copper, potassium, magnesium, manganese, sodium and zinc: 0.001%~0.01%; the determination range (mass fraction) of calcium: 0.002%~0.01%; and the determination range (mass fraction) of iron and nickel :0.002%~0.05%.
GB/T 42511-2023
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 77.060
CCS H 16
Hardmetals ?€? Determination of Calcium, Copper, Iron,
Potassium, Magnesium, Manganese, Sodium, Nickel and Zinc in
Cobalt Metal Powders ?€? Flame Atomic Absorption
Spectrometric Method
(ISO 11876:2010, MOD)
ISSUED ON: MAY 23, 2023
IMPLEMENTED ON: DECEMBER 1, 2023
Issued by: State Administration for Market Regulation;
Standardization Administration of the PEOPLE Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 5
2 Normative References ... 5
3 Terms and Definitions ... 5
4 Reagents ... 6
5 Test Procedures ... 6
6 Test Data Processing ... 8
7 Test Report ... 8
Bibliography ... 10
Hardmetals ?€? Determination of Calcium, Copper, Iron,
Potassium, Magnesium, Manganese, Sodium, Nickel and Zinc in
Cobalt Metal Powders ?€? Flame Atomic Absorption
Spectrometric Method
Warning: Personnel using this Document must have practical experience working in formal laboratory. This Document does not identify all possible security issues. Users are responsible for taking appropriate safety and health measures and ensuring compliance with the conditions stipulated in relevant national regulations.
1 Scope
This Document describes a method for the determination of calcium, copper, iron, potassium, magnesium, manganese, sodium, nickel and zinc in cobalt powders by flame atomic absorption spectrometry.
This Document is applicable to the determination of calcium, copper, iron, potassium, magnesium, manganese, sodium, nickel and zinc content in cobalt powder. The determination range (mass fraction) of copper, potassium, magnesium, manganese, sodium and zinc: 0.001%~0.01%; the determination range (mass fraction) of calcium: 0.002%~0.01%; and the determination range (mass fraction) of iron and nickel :0.002%~0.05%.
2 Normative References
The provisions in following documents become the essential provisions of this Document through reference in this Document. For the dated documents, only the versions with the dates indicated are applicable to this Document; for the undated documents, only the latest version (including all the amendments) is applicable to this Document.
GB/T 3358.1-2009 Statistics - Vocabulary and symbols - Part 1: General statistical terms and terms used in probability (ISO 3534-1:2006, IDT)
3 Terms and Definitions
For the purposes of this Document, there are no terms and definitions apply. 4 Reagents
Unless otherwise stated, only reagents confirmed to be guaranteed reagents, double distilled water or water of equivalent purity, are used in the analysis.
4.1 Nitric acid solution: nitric acid ??=1.42g/mL, 1+1 dilution.
4.2 Hydrochloric acid solution: ?????1.1g/mL, hydrochloric acid ??=1.19g/mL, 1+1 dilution. 4.3 Cesium chloride solution: 20g/L.
4.4 Calcium, copper, iron, potassium, magnesium, manganese, sodium, nickel and zinc standard solutions: 1.000g/L, used for calibration of elements to be measured.
5 Test Procedures
5.1 Test piece
Weigh 1g of sample, accurate to 0.001g.
5.2 Dissolution of test piece
Add 20mL of nitric acid solution (4.1) and 10mL of hydrochloric acid solution (4.2), and heat slowly until the sample is completely dissolved.
5.3 Dilution
5.3.1 Add 5mL of cesium chloride solution (4.3) and dilute to 100mL to obtain a sample solution.
5.3.2 If there is insoluble matter, use 20 mL of water to filter the solution obtained in 5.2 through a filter plugged with absorbent cotton into a 50 mL or 100 mL volumetric flask. According to the concentration of the element to be measured in the sample and the sensitivity of the photometer, dilute to a volume of 50mL or 100mL.
5.4 Preparation of standard solution and blank solution
5.4.1 Weigh at least 3 portions of the cobalt matrix material and process it according to 5.2. The components of the used matrix material are as similar as possible to the test piece. Then according to the concentration range of the elements to be measured, add the appropriately diluted calcium, copper, iron, potassium, magnesium, manganese, sodium, nickel and zinc standard solutions (4.4) in a gradient manner; dilute to 100mL; and mix well. The mass concentration of copper, potassium, magnesium, manganese, sodium, zinc and calcium series standard solutions is 0.10mg/L~1.00mg/L. The mass concentration of iron and nickel series standard solutions is 0.20mg/L~5.00mg/L.

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