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GB/T 9723-2007: Chemical reagent -- General rule for flame atomic absorption spectrometric analysis
Status: Valid GB/T 9723: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 9723-2007 | English | 289 |
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Chemical reagent -- General rule for flame atomic absorption spectrometric analysis
| Valid |
GB/T 9723-2007
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| GB/T 9723-1988 | English | 279 |
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Chemical reagent--General rules for flame atomic absorption spectrometry
| Obsolete |
GB/T 9723-1988
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PDF similar to GB/T 9723-2007
Basic data | Standard ID | GB/T 9723-2007 (GB/T9723-2007) | | Description (Translated English) | Chemical reagent -- General rule for flame atomic absorption spectrometric analysis | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G60 | | Classification of International Standard | 71.040.30 | | Word Count Estimation | 11,138 | | Date of Issue | 2007-09-26 | | Date of Implementation | 2008-04-01 | | Older Standard (superseded by this standard) | GB/T 9723-1988 | | Regulation (derived from) | China National Standard Approval Announcement2007 No.11 (Total No.111) | | Issuing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 requirements and the determination of chemical reagents flame (air- acetylene) atomic absorption spectrometry instrument. This standard applies to the determination of chemical reagents section trace impurity elements. | GB/T 9723-2007: Chemical reagent -- General rule for flame atomic absorption spectrometric analysis
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Chemical reagent. General rule for flame atomic absorption spectrometric analysis
ICS 71.040.30
G60
National Standards of People's Republic of China
Replacing GB/T 9723-1988
Chemical Reagents
Flame atomic absorption spectrometry General
Posted 2007-09-26
2008-04-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Foreword
This standard replaces GB/T 9723-1988 "Chemicals flame atomic absorption spectrometry General."
This standard and GB/T 9723-1988 compared to the main changes are as follows.
--- Increasing the normative references (Chapter 2 of this edition);
--- Increased terms and definitions chapter (Chapter 3 of this edition);
--- Modify the reagents and materials (1988 edition, Chapter 4, Chapter 5 of this edition);
--- Supplementary instrument a chapter on the contents (the 1988 edition of Chapter 5, Chapter 6 of this edition);
--- Modify the determination of a chapter in the content, and the elimination of one of the substrate preparation method (the 1988 version of Chapter 6, Article 7 edition
chapter);
--- Modify the precision of a chapter (1988 edition, Chapter 7, Chapter 8 of this edition);
--- Modify the security considerations chapter (1988 edition, Chapter 8, edition Chapter 9);
--- Revised Appendix C.
The Standard Annexes A and B are normative appendix Appendix C is informative appendix.
The standard proposed by China Petroleum and Chemical Industry Association.
This standard by the National Standardization Technical Committee Chemistry Chemicals Branch (SAC/TC63/SC3) centralized.
This standard was drafted. Shanghai Institute of chemical reagents.
The main drafters of this standard. Sheng Xiaohua, Suiqi Ying.
This standard was first published in 1988.
Chemical Reagents
Flame atomic absorption spectrometry General
1 Scope
This standard specifies the chemical reagents fire - Requirements and determination methods (air acetylene) by atomic absorption spectrometry instruments.
This standard applies to the determination of chemical reagents section trace impurity elements.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 602 Determination of impurities in chemical reagents prepared standard solution (GB/T 602-2002, ISO 6353-1. 1982, NEQ) with
GB/T 603 chemical reagent test method Preparations of articles (GB/T 603-2002, ISO 6353-1 with. 1982,
NEQ)
GB/T 4470 flame emission, atomic absorption and atomic fluorescence spectrometry term (GB/T 4470-1998, idt ISO 6955.
1982)
GB/T 6682 analytical laboratory use specifications and test methods (GB/T 6682-1992, neq ISO 3696. 1987)
JJG694 atomic absorption spectrophotometer test procedures
3 Terms and Definitions
GB/T 4470 established the following terms and definitions apply to this standard.
3.1
Flame will want to analyze the sample analyte into free atoms, by measuring the vapor phase, the ground state atoms of the element of the electrical characteristics
Magnetic radiation absorption to determine the chemical elements method.
4 principle of the method
Light radiated from the measured elements characteristic wavelengths of light, the sample vapor produced by flame atomization system, measured by vapor yuan
Ground state atomic absorption pigment, under certain test conditions, absorbance (A) the size of the relationship between the concentration of the analyte in the sample meets the light absorption
Law, see equation (1).
A = logΦ0/Φtr = K · L · Ba (1)
Where.
Φ0 --- incident light flux;
Φtr --- transmission flux;
--- The K absorption coefficient, under certain experimental conditions constant;
L --- absorption length;
--- Ba concentration of the analyte.
When the absorption of the optical path length L and the absorption coefficient K is constant, the absorbance A is proportional to the concentration of Ba and measured elements. With this law can be
Quantitative analysis.
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