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GB/T 3914-2008 English PDF (GB/T 3914-1983)

GB/T 3914-2008_English: PDF (GB/T3914-2008)
Standard IDContents [version]USDSTEP2[PDF] delivered inStandard Title (Description)StatusPDF
GB/T 3914-2008English189 Add to Cart 3 days [Need to translate] Chemical reagent -- The general rules of anodic stripping voltammetry Valid GB/T 3914-2008
GB/T 3914-1983English359 Add to Cart 3 days [Need to translate] Chemical reagents--The general rules of anodic stripping voltametry Obsolete GB/T 3914-1983


BASIC DATA
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Older Standard (superseded by this standard) GB/T 3914-1983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.

BASIC DATA
Standard ID GB/T 3914-1983 (GB/T3914-1983)
Description (Translated English) Chemical reagents--The general rules of anodic stripping voltametry
Sector / Industry National Standard (Recommended)
Classification of Chinese Standard G60
Classification of International Standard 71.040.30
Word Count Estimation 9,927
Date of Issue 1983/11/7
Date of Implementation 1984/7/1
Regulation (derived from) Announcement of Newly Approved National Standards No. 8, 2008 (No. 121 overall)
Proposing organization Ministry of Chemical Industry of the People Republic of China
Issuing agency(ies) National Bureau of Standards


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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