GB/T 32671.1-2016 English PDF

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GB/T 32671.1-2016: Colloidal systems -- Methods for zeta potential determination -- Part 1: Electroacoustic and electro-kinetic phenomena
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Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
GB/T 32671.1-2016	494	Add to Cart	3 days	Colloidal systems -- Methods for zeta potential determination -- Part 1: Electroacoustic and electro-kinetic phenomena	Valid

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Basic data

Standard ID: GB/T 32671.1-2016 (GB/T32671.1-2016)
Description (Translated English): Colloidal systems -- Methods for zeta potential determination -- Part 1: Electroacoustic and electro-kinetic phenomena
Sector / Industry: National Standard (Recommended)
Classification of Chinese Standard: N04
Classification of International Standard: 17.140.50
Word Count Estimation: 26,218
Date of Issue: 2016-04-25
Date of Implementation: 2016-11-01
Adopted Standard: ISO 13099-1-2012, IDT
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 method of determining zeta potentials in non-homogeneous systems such as dispersing systems, emulsions, and porous materials containing liquid dispersion media using electrical and acoustic methods. This method does not limit the zeta potential value and the mass fraction of the dispersed phase, and is suitable for dilution and concentration systems; the particle size and pore size are limited to the order of micrometers or less, and the geometry of the particles and voids is not limited. This standard does not include the zeta potential measurement method on the plane. The liquid dispersion medium may be an aqueous phase or a nonaqueous phase having arbitrary liquid conductivity, dielectric constant or chemical composition; the particles themselves may be electrically or nonconductive; the electric double layer may be separated or overlapped with each other There is no limit to the thickness or other nature of the layer. This standard applies

GB/T 32671.1-2016: Colloidal systems -- Methods for zeta potential determination -- Part 1: Electroacoustic and electro-kinetic phenomena

---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.
Colloidal systems.Methods for zetapotentialdetermination.Part 1. Electroacoustic and electrokineticphenomena ICS 17.140.50 N04 National Standards of People's Republic of China Colloid system zeta potential measurement method Part 1. electroacoustic and electrical phenomena Part 1. Electroacousticandelectrokineticphenomena (ISO 13099-1..2012, IDT) 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 terms and definitions

2.1 double layer 1 2.2 electric phenomenon 2 2.3 electroacoustic phenomena 4 3 symbol 5 4 Theoretical overview 6 Mathematical Theory of Schmuckovsky in Electricity 5.1 Overview 6 5.2 Electrophoresis 6 5.3 electroosmosis 7 5.4 Flow current or potential 7 5.5 settling potential or current 7 Mathematical Theory of Smolukovsky in Electroacoustics 6.1 Overview 7 6.2 O'Brien Dynamic Electrophoresis Mobility Theory 8 6.3 Smolukovsky limit theory for dynamic electrophoretic mobility Advanced Theory 9

8 balanced dilution and other sample handling

Appendix A (informative) Double Electrode Model 11 Appendix B (informative) Surface Conductivity 15 Appendix C (informative) Debye Length 17 Appendix D (informative) Advanced electrophoretic theory 18 Appendix E (informative) Advanced electro - acoustic theory Reference 21

Foreword

GB/T 32671 "colloidal system zeta potential measurement method" is divided into the following parts. Part 1. electroacoustic and electrical phenomena Part 2. Optical method Part 3. Acoustics This part is part 1 of GB/T 32671. This part is drafted in accordance with the rules given in GB/T 1.1-2009. This part uses the translation method equivalent to ISO 13099-1..2012 "Colloid system zeta potential measurement method Part 1. Electroacoustic and Electric phenomenon ". This part is presented by the Chinese Academy of Sciences. This part of the National Standardization Technical Committee for Nanotechnology (SAC/TC279) and the National Particle Characterization and Separation and Screen Standardization Technology (SAC/TC168). This part of the drafting unit. the National Center for nano-science, Beijing physical and chemical analysis and testing center, in the machine productivity promotion center. This part of the main drafters. Ge Guang Road, Zhu Xiaoyang, Zhou Suhong, Yu Fang, Zhang Tao, Liu Zhixiao, plateau, Gao Jie.

Introduction

This section describes the basic theory of electric and electroacoustic phenomena in suspensions, emulsions or porous systems. From the treatment of domestic sewage or industrial wastewater to the preparation of stable drug suspensions and other processes, have benefited from the surface charge of the particles Understanding of the phenomenon. In addition, the mechanism of mineral flotation is also based on the affinity of the target mineral particles to the bubbles. From a technical point of view, electricity Dynamic and electro-acoustic measurements provide extremely useful and informative information in many cases, and the following are some of the most important applications. a) determine the isoelectric point by the electric titration of the ion that determines the potential; b) Determination of isoelectric points by titration with other reagents such as surfactants or polyelectrolytes; c) determine the adsorption saturation platform, indicating the best amount of dispersant; d) relative comparison of surface electrical properties of various systems. The zeta potential is the potential difference between the slip plane and the body liquid, and the zeta potential can be used to explain and determine some of the suspension The stability of the system interval. By determining the isoelectric point, the best conditions for particle flocculation before filtration or precipitation can be obtained, thus facilitating the treatment of the effluent. But the zeta potential is not a direct measure of the amount that it needs to be obtained indirectly by establishing some appropriate theory. This section refers to the technical report of the International Federation of Pure and Applied Chemistry (IUPAC) on the measurement and interpretation of electric phenomena and some General references [1 ~ 5]. Colloid system zeta potential measurement method Part 1. electroacoustic and electrical phenomena

1 Scope

This part of GB/T 32671 specifies the use of electrical and acoustic methods in dispersions, emulsions, porous fluids containing liquid dispersion media Materials and other non-homogeneous system in the determination of zeta potential method. This method does not limit the zeta potential and the mass fraction of the dispersed phase, suitable for dilution and concentration systems; particle size and porosity Inch is limited to the order of micrometers or less, and the geometry of the particles and pores is not limited. This part does not include zeta potential measurements on the plane Quantity method. The liquid dispersion medium may be an aqueous phase or a nonaqueous phase having an arbitrary liquid conductivity, a dielectric constant or a chemical composition; Itself can be conductive or non-conductive; double layer can also be separated from each other, double layer thickness or other properties are not limited. This part applies to the linear effect in the electric field and assumes that the surface charge is evenly distributed along the interface. This section does not apply to the effects associated with soft surface layers containing space charge distributions.

2 terms and definitions

The following terms and definitions apply to this document. 2.1 Double electric layer electricdoublelayer Note. Electric double layer refers to when an object is in contact with the liquid, the charge is distributed in the space near its surface and surface. 2.1.1 Debye - Hockel approximation Debye-Hückelapproximation The electric double layer has a small potential difference when the model. 2.1.2 Debye length Debyelength Κ-1 Characteristic Length of Double Electrode in Electrolyte Solution. Note. The unit is nano (nm). 2.1.3 Diffusion coefficient diffusioncoefficient Mean Displacement of Particle Motion in Unit Time. 2.1.4 Dukhin number Dukhinnumber Du The dimensionless number reflects the contribution of surface conductivity to electrical, electroacoustic phenomena and multiphase conductivity and dielectric constant. 2.1.5 Dynamic viscosity ......

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