GB/T 3914-2008_English: PDF (GB/T3914-2008)
| Standard ID | USD | BUY PDF | Lead-Days | Standard Title (Description) | Status |
| GB/T 3914-2008 | 189 |
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Chemical reagent -- The general rules of anodic stripping voltammetry
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| GB/T 3914-1983 | 359 |
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Chemical reagents--The general rules of anodic stripping voltametry
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| Standard ID | GB/T 3914-2008 (GB/T3914-2008) | | Description (Translated English) | Chemical reagent. The general rules of anodic stripping voltammetry | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G60 | | Classification of International Standard | 71.040.30 | | Word Count Estimation | 8,876 | | Date of Issue | 2008-05-15 | | Date of Implementation | 2008-11-01 | | Older Standard (superseded by this standard) | GB/T 3914-1983 | | Drafting Organization | Beijing Institute of Chemical Reagents | | Administrative Organization | Chemicals Branch of the National Standardization Technical Committee chemistry | | Regulation (derived from) | National Standard Approval Announcement 2008 No.8 (Total No.121) | | Proposing organization | China Petroleum and Chemical Industry Association | | Issuing agency(ies) | Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China; Standardization Administration of China | | Summary | This standard specifies the determination of impurities in chemical reagents lead by anodic stripping voltammetry, copper, zinc, cadmium, selenium, etc., requirements for instruments and measurement methods. This standard applies to impurities in chemical reagents lead, determination of selenium, etc., copper, zinc, cadmium. |
GB/T 3914-2008
Chemical reagent. The general rules of anodic stripping voltammetry
ICS 71.040.30
G60
National Standards of People's Republic of China
Replacing GB/T 3914-1983
Chemical Reagents
General anodic stripping voltammetry
Posted 2008-05-15
2008-11-01 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 3914-1983 "Chemicals --- anodic stripping voltammetry Law", compared with the GB/T 3914-1983 Main
To change the following.
--- Modify the scope (1983 edition Chapter 1, Chapter 1 of this edition);
--- Increasing the normative references (Chapter 2 of this edition);
--- Increasing the terms and definitions chapter content (1983 Edition Chapter 2, Chapter 3 of this edition);
--- Increase the types and methods of use of the working electrode (1983 version 4.2, this version 6.2, Appendix A);
--- Modify the contents of the measurement conditions of selecting a chapter (1983 version 6.3, this version 7.1);
--- Modify the determination of the content of a chapter (1983 Edition Chapter 6, edition 7.2);
--- Modify the contents of Appendix A (1983 edition Appendix A, this edition of Appendix A);
--- Canceled Appendix B, Appendix C (1983 edition Appendix B, Appendix C).
Appendix A of this standard is an informative annex.
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. Beijing Institute of chemical reagents.
The main drafters of this standard. Han Baoying, strong Jing Lin, Wang Yuhua.
This standard was first published in 1983.
Chemical Reagents
General anodic stripping voltammetry
1 Scope
This standard specifies the determination of impurities during chemical reagent products of lead, copper, zinc, cadmium, selenium, etc., requirements for instruments and by anodic stripping voltammetry
test methods.
This standard applies to the determination of impurities in chemical reagents lead, copper, zinc, cadmium, selenium, and the like.
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 6682 analytical laboratory use specifications and test methods (GB/T 6682-2008, ISO 3696. 1987, MOD)
3 Terms and Definitions
The following terms and definitions apply to this standard.
3.1
The substrate of the working electrode is an inert material having good conductive properties of the finished solid having a certain shape and a certain surface area
Quality, the metal may be used as the working electrode in the form of thin films is fixed on a certain surface area thereof. Fixing methods are applied, pre-electrolysis
Plating and coating methods such as parity.
3.2
Adding a certain concentration in the sample solution as determined For the metal compound film, measured in the pre-electrolysis, is formed on the substrate
Thin film, the film as a working electrode to be measured was the pre-electrolytic enrichment on it, back when freed entirely from the substrate solution.
3.3
Dissolve the sample for measurement of anodic stripping voltammetry solvent.
3.4
In determining the potential and stirring conditions under which a certain time, the part to be measured was enriched to the electrolytic membrane electrode.
3.5
After the pre-electrolysis, stirring for a certain time to stop using potential measurement potential from negative to positive, according to a certain scanning rate changes linearly. this
Determination is the pre-electrolytic enrichment was to be measured to the dissolution of the membrane electrode on record its stripping voltammetry curves.
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