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GB/T 20255.6-2008: Methods for chemical analysis of hard metals -- Flame atomic absorption spectrometry -- General requirements
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| GB/T 20255.6-2008 | English | 94 |
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Methods for chemical analysis of hard metals -- Flame atomic absorption spectrometry -- General requirements
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GB/T 20255.6-2008
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Basic data | Standard ID | GB/T 20255.6-2008 (GB/T20255.6-2008) | | Description (Translated English) | Methods for chemical analysis of hard metals -- Flame atomic absorption spectrometry -- General requirements | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H16 | | Classification of International Standard | 77.040.30 | | Word Count Estimation | 5,553 | | Date of Issue | 2008-06-09 | | Date of Implementation | 2008-12-01 | | Adopted Standard | ISO 7627/1-1983, IDT | | Regulation (derived from) | National Standard Approval Announcement 2008 No.9 (Total No.122) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the general requirements for flame atomic absorption spectrometry Carbide chemical analysis. Each of the criteria listed in Table 1 of this section specifies the method for determining the content of the following elements by flame atomic absorption spectrometry: Calcium, cobalt, chromium, iron, potassium, magnesium, manganese, molybdenum, sodium, Nickel, titanium, vanadium. The method is applicable to the following: a) chromium, niobium, tantalum, titanium, tungsten, vanadium carbide, b) above and the bonding metal carbides mixture, c) above pre-sintered carbide production of various types or cemented carbide, d) After complete removal of the coating containing the elements listed in Table coated carbide 1. | GB/T 20255.6-2008: Methods for chemical analysis of hard metals -- Flame atomic absorption spectrometry -- General requirements
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Methods for chemical analysis of hardmetals. Flame atomic absorption spectrometry. General requirements
ICS 77.040.30
H16
National Standards of People's Republic of China
GB/T 20255.6-2008/ISO 7627/1. 1983
Carbide chemical analysis
Flame Atomic Absorption Spectrometry
General requirements
(ISO 7627/1. 1983, Hardmentals-Chemicalanalysisbyflameatomic
absorptionspectrometry-Part 1. Generalrequirements, IDT)
Posted 2008-12-01 2008-06-09 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
GB/T 20255 "Methods for chemical analysis Carbide" is divided into 6 sections.
GB/T 20255.1 Carbide chemical analysis of calcium, potassium, magnesium and sodium contents - Flame atomic absorption spectrometry;
GB/T 20255.2 Carbide chemical analysis of cobalt, iron, manganese and nickel content by flame atomic absorption spectrometry;
GB/T 20255.3 Carbide chemical analysis of molybdenum, titanium and vanadium content - Flame atomic absorption spectrometry;
Flame atomic GB/T 20255.4 Carbide chemical analysis of cobalt, iron, manganese, molybdenum, nickel, titanium and vanadium amount of light absorbed
Spectroscopy;
Flame atomic GB/T 20255.5 amount of chromium carbide absorption spectrometry;
GB/T 20255.6 Carbide chemical analysis by flame atomic absorption spectrometry - General requirements.
Part is divided into 6 sections.
This part identical with ISO 7627/1. 1983 "--- Carbide Chemical analysis by flame atomic absorption spectrometry --- Part 1. a
General requirements. " For ease of use, this section made the following editorial changes.
a) with "this Part" instead of "this International Standard";
"." B) use a decimal point instead of a decimal point in the international standard, "";
c) Remove the cover of the international standards, foreword.
This part is proposed by the China Nonferrous Metals Industry Association.
The non-ferrous metal part by the National Standardization Technical Committee.
This section Zhuzhou Cemented Carbide Group Co., Ltd., China Nonferrous Metals Industry Institute of Standards Metrology and Quality is responsible for drafting.
The main drafters of this section. Guo Peng, Zhang Xianming.
GB/T 20255.6-2008/ISO 7627/1. 1983
Carbide chemical analysis
Flame Atomic Absorption Spectrometry
General requirements
1 Scope
This section provides general requirements for flame atomic absorption spectrometry Carbide chemical analysis.
Each of the criteria listed in a part table defines the method for determining the content of the following elements by flame atomic absorption spectrometry.
Calcium, cobalt, chromium, iron, potassium, magnesium, manganese, molybdenum, sodium, nickel, titanium, vanadium.
2 Scope
This method is applicable to the following ranges.
a) chromium, niobium, tantalum, titanium, tungsten, vanadium carbide;
b) a mixture of the carbide metal bonding;
c) Using the above-described various types of pre-sintered carbide production or sintered carbide;
d) after complete removal of the coating containing coated carbide elements listed in Table 1.
Table 1 GB/T 20255 and each element of each part number and scope of the appropriate section contains
No part of the respective range of elements (mass fraction) /%
GB/T 20255.1 Ca, K, Mg, Na 0.001 ~ 0.02
GB/T 20255.2 Co, Fe, Mn, Ni 0.01 ~ 0.5
GB/T 20255.3 Mo, Ti, V 0.01 ~ 0.5
GB/T 20255.4 Co, Fe, Mn, Mo, Ni, Ti, V 0.5 ~ 2
GB/T 20255.5 Cr 0.01 ~ 2
Note. The method can also be used chromium content range (mass fraction) was measured at 0.01% to 2% of iron, nickel, cobalt and manganese.
Principle 3
Sample dissolution and flame atomic absorption spectrometry.
4 interfering elements
Using a similar matrix in the test solution and standard solution to minimize the influence of interference.
5 Reagents
Use only analytical reagent and double distilled water or equivalent purity water analysis.
Note. The purity reagents required under certain circumstances.
6 Instruments
Conventional laboratory equipment and atomic absorption spectrometer.
NOTE. All the instrument parameters should be selected so that the best instrument sensitivity. Proposed that a single element hollow cathode lamp. See recommended equipment requirements
GB/T 20255.1 - 20255.5 of the corresponding portion.
GB/T 20255.6-2008/ISO 7627/1. 1983
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