GB/T 23840-2009 English PDF

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GB/T 23840-2009: Inorganic chemical products potentiometric titration General
Status: Valid

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 23840-2009	559	Add to Cart	5 days	Inorganic chemical products potentiometric titration General	Valid

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Basic data

Standard ID: GB/T 23840-2009 (GB/T23840-2009)
Description (Translated English): Inorganic chemical products potentiometric titration General
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: G10
Classification of International Standard: 71.060.01
Word Count Estimation: 24,268
Date of Issue: 2009-05-18
Date of Implementation: 2010-02-01
Regulation (derived from): PRC National Standard Approval Announcement 2009 No.6 (Total No.146)
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 rules of inorganic chemical products potentiometric titration requirements for instruments and quantitative analysis. This standard applies to inorganic chemical products, acid-base titration, precipitation titration, redox titration and non- aqueous titration. Especially suitable for turbid, titration colored solution and titration indicator of the lack of suitable analytical methods.

GB/T 23840-2009: Inorganic chemical products potentiometric titration General

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Inorganic chemical products potentiometric titration General ICS 71.060.01 G10 National Standards of People's Republic of China Inorganic chemical products potentiometric titration General Posted 2009-05-18 2010-02-01 implementation Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China Standardization Administration of China released

Foreword

Appendix A of this standard is a normative appendix, Appendix B, Appendix C, Appendix D and Appendix E is an informative annex. The standard proposed by China Petroleum and Chemical Industry Association. This standard by the National Standardization Technical Committee chemical inorganic chemicals Club (SAC/TC63/SC1) centralized. This standard is mainly drafted by. Fluoride Chemicals Co., Ltd., CNOOC Tianjin Chemical Research & Design Institute, People's Republic of China Days Tianjin CIQ. The main drafters of this standard. Wang Yongqiang, Lusi Wei, Wang Jianping, Liu Shao from Sun Shujun. This standard is the first release. Inorganic chemical products potentiometric titration General

1 Scope

This standard specifies the general rules of inorganic chemical products potentiometric titration requirements for instruments and quantitative analysis. This standard applies to inorganic chemical products, acid-base titration, precipitation titration, redox titration and non-aqueous titration. Especially suitable for thick with Titration color solution and titration analysis method lacks a suitable indicator.

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 6682-2008 analytical laboratory use specifications and test methods (ISO 3696. 1987, MOD) Preparation of GB/T 601 chemical reagent standard titration solution GB/T 603 chemical reagent in test methods - Preparations with Preparation of standard titration solution of HG/T 3696.1 inorganic chemical products, chemical analysis Preparations of HG/T 3696.3 inorganic chemical products, chemical analysis

3 Terms and Definitions

The following terms and definitions apply to this standard. 3.1 Potential of the electrode can be indicative of the measured ion activity (or concentration) changes in the electrode. 3.2 The potential of the electrode from the test solution consisting of the impact of changes, an electrode having a relatively constant value. 3.3 Changes in potential or pH value of the unit volume of standard solution caused numerically equal ΔE/Δ Vp or ΔpH/Δ Vp. 3.4 The difference between the values \u200b\u200bof adjacent first derivative of the equivalent. Principle 4 Indicator electrode and a reference electrode immersed in the same test solution during the titration, the potential of the reference electrode to maintain a predetermined constant, indicating Changing the electrode potential. Before and after the stoichiometric point, small changes in the concentration of the test substance in solution will cause a sharp change indicating potential Of indicating electrode potential jump point titration end point is, use as the second derivative method or determine the endpoint.

5 Safety Tips

Reagents Test methods used in corrosive, the operator must be careful! As splashed on the skin or eyes should be immediately washed with water Flushing, severe cases should be treated immediately. ......

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