GB/T 32668-2016 English PDF

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GB/T 32668-2016: Analysis of zeta potential of colloids -- Electrophoresis guidelines
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Basic data

Standard ID: GB/T 32668-2016 (GB/T32668-2016)
Description (Translated English): Analysis of zeta potential of colloids -- Electrophoresis guidelines
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: A30
Classification of International Standard: 11.080.99
Word Count Estimation: 24,250
Date of Issue: 2016-04-25
Date of Implementation: 2016-11-01
Quoted Standard: GB/T 20099-2006; ISO 13099-1-2012; ISO 13099-2-2012
Regulation (derived from): National Standard Announcement No
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 for the determination of the zeta potential of colloidal particles by electrophoresis. This standard is applicable to zeta potential analysis of ideal hard sphere colloid particles with water as dispersion medium and smooth surface. Zeta potential analysis of non-ideal hard sphere colloid particles and soft sphere colloidal particles can also be carried out with reference to.

GB/T 32668-2016: Analysis of zeta potential of colloids -- Electrophoresis guidelines

---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.
Analysis of zeta potential of colloids.Electrophoresis guidelines ICS 11.080.99 A30 National Standards of People's Republic of China Colloidal particles zeta potential analysis electrophoresis general rule Analysis of zetapotentialofcoloids-Electrophoresisguidelines 2016-04-25 released 2016-11-01 implementation General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China China National Standardization Management Committee released Directory Preface I Introduction II 1 Scope 1 2 normative reference document 1 3 terms and definitions, symbol 1 4 Principle 3 5 zeta potential 6 Determination of zeta potential 7 Uncertainty Source 8 8 Test Report 9 Appendix A (informative) Application conditions of Smokovskovsky theory Appendix B (informative) Debye length 12 Appendix C (informative) zeta potential measurement example electrophoretic light scattering method 14 Appendix D (informative) zeta potential measurement example Microelectrophoresis 16 Appendix E (informative) Test Report 18 References 19

Foreword

This standard is drafted in accordance with the rules given in GB/T 1.1-2009. This standard is proposed by the Chinese Academy of Sciences. This standard is under the national standard of nanotechnology standardization technical committee (SAC/TC279). The main drafting of this standard. National Center for Nanoscience, East China Normal University. The main drafters of this standard. Liu Dunxiao, Ma Shiyu, Ge Guanglu, Chen Banglin, Jiang Chao, Zhang Yunyan, Gao Jie.

Introduction

Many of the important properties of the colloidal system are directly or indirectly determined by the charge (or potential) of the colloidal particles. The ions in the colloidal system The adsorption of dipole molecules affects the distribution of charge (or potential) of colloidal particles, while the distribution of charge (or potential) also affects ions or even Polymeric adsorption. The charge (or potential) distribution determines the interaction energy between the colloidal particles and, in many cases, the colloid The aggregation stability and flow behavior of the system. The properties of the colloidal system are therefore typically analyzed and interpreted by measuring the electrical properties. For the charged particles suspended in the liquid medium, in addition to the surface chemical composition, the surface charge and surface morphology (especially the former) is two The most important surface characteristics. Reflecting the surface charge properties of the colloidal system that zeta potential, the zeta potential of the absolute value of the size of the colloid The direct reflection of stability is a key factor in the preparation, destruction and application of colloidal systems. By measuring or regulating zeta Potential can monitor and control the behavior of colloidal systems, so zeta potential in scientific research, industrial production and other fields have a wide range of applications. For example, in the paint industry, the accumulation of pigment particles will affect the quality of color, reduce the gloss and texture of the spray, through the monitoring and adjustment of paint Of the zeta potential so that the particles in the coating is well dispersed and successfully sprayed; in the paper industry, the detection of fiber and filler surface zeta potential, Can effectively assist in the addition of chemical additives; in addition, zeta potential in the adsorption, bio-medicine, brewing, ceramics, pharmaceutical, mineral processing and water And other industries are also extremely important parameters. zeta potential measurement methods are electrophoresis, electroosmosis, flow potential method and electro-acoustic method (ultrasonic method), which by electrophoresis Most common. This standard specifies the general code for the measurement of zeta potentials in colloidal systems using electrophoresis. Colloidal particles zeta potential analysis electrophoresis general rule

1 Scope

This standard specifies the general rules for the determination of zeta potentials of colloidal particles by electrophoresis. This standard is applicable to zeta potential analysis of ideal hardball colloidal particles with water as the dispersion medium and smooth surface, non-ideal hard gel Particle and soft ball colloidal particles of the zeta potential analysis can also refer to the implementation.

2 normative reference documents

The following documents are indispensable for the application of this document. For dated references, only the dated edition applies to this article Pieces. For undated references, the latest edition (including all modifications) applies to this document. Sample preparation - Dispersion method for powders in liquids ISO 13099-1..2012 colloid system zeta potential measurement method - Part 1. Electroacoustic and electrokinetic phenomena (Coloidalsys- tems-Methodsforzeta-potentialdetermination-Part 1. Electroacousticandelectrokineticphenome- na) ISO 13099-2..2012 colloid system zeta potential measurement method - Part 2. Optical method (Coloidalsystems- Methodsforzeta-potentialdeterminatin-Part 2. Opticalmethods) 3 terms and definitions, symbols 3.1 Terms and definitions The following terms and definitions apply to this document. 3.1.1 Surface charge density The amount of charge generated at the interface per unit area due to the specific adsorption of the liquid phase ions or the dissociation of the surface groups. Note. The unit is Coulomb per square meter (C/m2). 3.1.2 Surface potential electricsurfacepotential Ψ0 The potential difference between the particle surface and the uniform liquid phase. Note. quoted from ISO 13099-2..2012, defined 3.1.3. 3.1.3 Slipping plane; When the particles move in the electric field, under the action of the shear stress, the liquid near the solid-liquid interface moves with respect to the surface Elephant. Note. cited from ISO 13099-2..2012, defined 3.1.9. ......

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