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GB/T 10726-2007: Chemical reagent -- General method for the determination of metals by solvent extraction followed by AAS
Status: Valid GB/T 10726: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 10726-2007 | English | 139 |
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Chemical reagent -- General method for the determination of metals by solvent extraction followed by AAS
| Valid |
GB/T 10726-2007
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| GB/T 10726-1989 | English | 199 |
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Chemical reagent--General method for the determination of metals by solvent extraction followed by AAS
| Obsolete |
GB/T 10726-1989
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PDF similar to GB/T 10726-2007
Basic data | Standard ID | GB/T 10726-2007 (GB/T10726-2007) | | Description (Translated English) | Chemical reagent -- General method for the determination of metals by solvent extraction followed by AAS | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G60 | | Classification of International Standard | 71.040.30 | | Word Count Estimation | 5,548 | | Date of Issue | 2007-09-26 | | Date of Implementation | 2008-04-01 | | Older Standard (superseded by this standard) | GB/T 10726-1989 | | Regulation (derived from) | China National Standard Approval Announcement 2007 No.11 (Total No.111) | | Issuing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 use of chemical reagents in the solvent extraction of metal impurities requirements and methods of using atomic absorption spectrometry determination of its content. This standard applies to the determination sensitivity poor or there is a serious disturbance in the absorption of metal impurities in chemical reagents. | GB/T 10726-2007: Chemical reagent -- General method for the determination of metals by solvent extraction followed by AAS
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Chemical reagent. General method for the determination of metals by solvent extraction followed by AAS
ICS 71.040.30
G60
National Standards of People's Republic of China
Replacing GB/T 10726-1989
Chemical Reagents
Solvent Extraction - Atomic Absorption Spectrometry
General method for the determination of metal impurities
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 10726-1989 "chemical solvent extraction reagent - General method for the determination of metal impurities by atomic absorption spectrometry."
This standard compared with GB/T 10726-1989 main changes are as follows.
--- Modify the reagents and materials (1989 edition, Chapter 4, Chapter 4 of this edition);
--- Supplementary instrument a chapter on the contents (1989 edition Chapter 5, Chapter 5 of this edition);
--- Adjust the formula for calculating the symbol (1989 edition, Chapter 6, Section 6 of this edition);
--- Modify the precision of a chapter (1989 edition, Chapter 7, Chapter 7 of this edition).
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 1989.
Chemical Reagents
Solvent Extraction - Atomic Absorption Spectrometry
General method for the determination of metal impurities
1 Scope
This standard specifies the use of chemical agents after solvent extraction of metal impurities using atomic absorption spectrometry requires the content and
method.
This standard applies to the measurement sensitivity difference or a serious disturbance in the absorption of metal impurities in chemical reagents.
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 6682 analytical laboratory use specifications and test methods (GB/T 6682-1992, neq ISO 3696. 1987)
GB/T 9723-2007 Chemicals flame atomic absorption spectrometry General
3 PRINCIPLE OF THE METHOD
Trace metal ions in the acidic solution of pH 3 to 6 with ammonium pyrrolidine dithiocarbamate (or pyrrolidine dithiocarbamate
Ammonium) to generate a hydrophobic chelate to 4-methyl-2-pentanone extracted chelates into the organic phase, the organic phase was measured by atomic absorption spectrometry
Enriched content after the metal impurities.
4 Reagents and materials
This standard is used in the standard solution according to GB/T 602 provisions of preparation, the test water should be consistent with GB/T 6682 water in two specifications,
Analytical reagents should be above the gas should be high purity gases.
5 Instruments
With the provisions of GB/T 9723-2007 in Chapter 6.
6 Determination
Select 6.1 Determination Conditions
In addition to the use of low-flow type flame acetylene flame oxidation, other conditions with GB/T 9723-2007 Chapter 7 provisions.
6.2 Determination
6.2.1 working curve method
Blank test solution was prepared by product standards, test solution and standard solution proportional to the concentration of the three, were placed in 125mL liquid separation
Funnel, add 40mL water, with acetic acid or sodium hydroxide solution (200g/L) of test solution adjusted to pH 3 to 6, 1mL was added pyrrolidine dithiocarbamate
Substituting ammonium formate (APDC) solution (10g/L), mix well and let stand 5min, plus 10mL4--methyl-2-pentanone, shaking 1min, standing stratified abandoned
The aqueous phase. The organic phase was transferred to a 10 mL volumetric flask, with "Ethanol (95%)" dilute to the mark. Zero water, press
GB/T 9723-2007 7.2.1 Determination of requirements. In the mass concentration of standard solution as abscissa and the absorbance of the standard solution minus empty
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