GB/T 32671.2-2019 PDF English
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Colloidal systems -- Methods for zeta-potential determination -- Part 2: Optical methods
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GB/T 32671.2-2019: Colloidal systems -- Methods for zeta-potential determination -- Part 2: Optical methods
---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT32671.2-2019
Colloidal systems - Methods for zeta-potential determination - Part 2. Optical methods
ICS 19.120
A19
National Standards of People's Republic of China
Colloidal system zeta potential measurement method
Part 2. Optical method
Coloidalsystems-Methodsforzeta-potentialdetermination-
Part 2. Opticalmethods
(ISO 13099-2.2012, IDT)
Published on.2019-08-30
2020-03-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
Introduction IV
1 Scope 1
2 Normative references 1
3 terms, definitions and symbols 1
4 Measuring principle 3
5 Microscopy 3
6 Electrophoretic Light Scattering (ELS) 4
7 zeta potential calculation 8
8 Measurement step 9
Appendix A (informative) Electroosmosis in capillary sample cells 14
Reference 16
Foreword
GB/T 32671 "Method for measuring zeta potential of colloidal system" is divided into the following three parts.
--- Part 1. Electroacoustic and electric phenomena;
--- Part 2. Optical method;
--- Part 3. Acoustic method.
This part is the second part of GB/T 32671.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This section uses the translation method equivalent to ISO 13099-2.2012 "Colloidal system zeta potential measurement method Part 2. Optical
law".
The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows.
--- GB/T 32671.1-2016 - Determination of zeta potential of colloidal systems - Part 1 . electroacoustic and electro
(ISO 13099-1.2012, IDT);
---JJF1005-2016 Standard substance general terms and definitions (ISO Guide 30.2015, MOD).
This part is proposed and managed by the National Technical Committee for Particle Characterization and Separation and Screen Standardization (SAC/TC168).
This section drafted by. Shanghai Metrology and Testing Technology Research Institute, China Machine Productivity Promotion Center, Shanghai Institute of Technology, McMurridge
(Shanghai) Instrument Co., Ltd., Zhuhai Truth Optical Instrument Co., Ltd., Wuhu Dingheng Material Technology Co., Ltd., China Metrology University.
The main drafters of this section. Wu Limin, Li Yanjun, Hou Changge, Hao Ping, Cai Xiaoshu, Xu Renliang, Zhang Fugen, Xue Weichang, Wang Rongrong,
Zhu Peiwu.
introduction
The zeta potential is used to characterize the long-term stability of suspensions and emulsions, to study the surface properties and absorption of particles and liquids in contact with the surface of the particles.
A parameter with performance. The zeta potential cannot be directly measured. It is an experimentally measured parameter such as electrophoretic mobility.
The theoretical model is calculated. Optical methods, especially electrophoretic light scattering, have been widely used to determine particles or macromolecules in suspensions or solutions.
Electrophoretic mobility. This section provides methods for measuring electrophoretic mobility and calculating zeta potential by optical methods.
Colloidal system zeta potential measurement method
Part 2. Optical method
1 Scope
This part of GB/T 32671 specifies two methods for measuring the electrophoretic mobility of suspended particles in liquid. microscopy and electricity.
The stroboscopic scattering method, the estimation of the surface charge of the particles and the determination of the zeta potential can be measured by electrophoretic mobility and using a suitable theoretical model.
Type calculation.
Note. See ISO 13099-1 for related theory.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
ISO 13099-1 - Determination of zeta potential of colloidal systems - Part 1 . Electroacoustic and electro
Methodsforzeta-potentialdetermination-Part 1. Electroacousticandelectrokineticphenomena)
ISO Guide30 Reference Material General Terms and Definitions (Referencematerials-Selectedtermsanddefinitions)
3 terms, definitions and symbols
3.1 Terms and definitions
The following terms and definitions apply to this document.
3.1.1
Brownian Motion Brownianmotion
Random motion of particles suspended in a liquid due to thermal motion of liquid medium molecules.
3.1.2
Doppler shift Dopplershift
The phenomenon in which the wavelength and frequency of the received signal change as the receiver moves relative to the source.
3.1.3
Surface potential electricsurfacepotential
Ψσ
The potential difference between the surface and bulk liquid.
Note. The unit is volt [special] (V).
3.1.4
Zeta potential zeta-potential
Electrokinetic potential
Potential potential
A potential difference formed between the slip surface and the bulk liquid.
Note. The unit is volt [special] (V).
GB/T 32671.2-2019
Colloidal systems - Methods for zeta-potential determination - Part 2. Optical methods
ICS 19.120
A19
National Standards of People's Republic of China
Colloidal system zeta potential measurement method
Part 2. Optical method
Coloidalsystems-Methodsforzeta-potentialdetermination-
Part 2. Opticalmethods
(ISO 13099-2.2012, IDT)
Published on.2019-08-30
2020-03-01 implementation
State market supervision and administration
China National Standardization Administration issued
Content
Foreword III
Introduction IV
1 Scope 1
2 Normative references 1
3 terms, definitions and symbols 1
4 Measuring principle 3
5 Microscopy 3
6 Electrophoretic Light Scattering (ELS) 4
7 zeta potential calculation 8
8 Measurement step 9
Appendix A (informative) Electroosmosis in capillary sample cells 14
Reference 16
Foreword
GB/T 32671 "Method for measuring zeta potential of colloidal system" is divided into the following three parts.
--- Part 1. Electroacoustic and electric phenomena;
--- Part 2. Optical method;
--- Part 3. Acoustic method.
This part is the second part of GB/T 32671.
This part is drafted in accordance with the rules given in GB/T 1.1-2009.
This section uses the translation method equivalent to ISO 13099-2.2012 "Colloidal system zeta potential measurement method Part 2. Optical
law".
The documents of our country that have a consistent correspondence with the international documents referenced in this part are as follows.
--- GB/T 32671.1-2016 - Determination of zeta potential of colloidal systems - Part 1 . electroacoustic and electro
(ISO 13099-1.2012, IDT);
---JJF1005-2016 Standard substance general terms and definitions (ISO Guide 30.2015, MOD).
This part is proposed and managed by the National Technical Committee for Particle Characterization and Separation and Screen Standardization (SAC/TC168).
This section drafted by. Shanghai Metrology and Testing Technology Research Institute, China Machine Productivity Promotion Center, Shanghai Institute of Technology, McMurridge
(Shanghai) Instrument Co., Ltd., Zhuhai Truth Optical Instrument Co., Ltd., Wuhu Dingheng Material Technology Co., Ltd., China Metrology University.
The main drafters of this section. Wu Limin, Li Yanjun, Hou Changge, Hao Ping, Cai Xiaoshu, Xu Renliang, Zhang Fugen, Xue Weichang, Wang Rongrong,
Zhu Peiwu.
introduction
The zeta potential is used to characterize the long-term stability of suspensions and emulsions, to study the surface properties and absorption of particles and liquids in contact with the surface of the particles.
A parameter with performance. The zeta potential cannot be directly measured. It is an experimentally measured parameter such as electrophoretic mobility.
The theoretical model is calculated. Optical methods, especially electrophoretic light scattering, have been widely used to determine particles or macromolecules in suspensions or solutions.
Electrophoretic mobility. This section provides methods for measuring electrophoretic mobility and calculating zeta potential by optical methods.
Colloidal system zeta potential measurement method
Part 2. Optical method
1 Scope
This part of GB/T 32671 specifies two methods for measuring the electrophoretic mobility of suspended particles in liquid. microscopy and electricity.
The stroboscopic scattering method, the estimation of the surface charge of the particles and the determination of the zeta potential can be measured by electrophoretic mobility and using a suitable theoretical model.
Type calculation.
Note. See ISO 13099-1 for related theory.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this article.
Pieces. For undated references, the latest edition (including all amendments) applies to this document.
ISO 13099-1 - Determination of zeta potential of colloidal systems - Part 1 . Electroacoustic and electro
Methodsforzeta-potentialdetermination-Part 1. Electroacousticandelectrokineticphenomena)
ISO Guide30 Reference Material General Terms and Definitions (Referencematerials-Selectedtermsanddefinitions)
3 terms, definitions and symbols
3.1 Terms and definitions
The following terms and definitions apply to this document.
3.1.1
Brownian Motion Brownianmotion
Random motion of particles suspended in a liquid due to thermal motion of liquid medium molecules.
3.1.2
Doppler shift Dopplershift
The phenomenon in which the wavelength and frequency of the received signal change as the receiver moves relative to the source.
3.1.3
Surface potential electricsurfacepotential
Ψσ
The potential difference between the surface and bulk liquid.
Note. The unit is volt [special] (V).
3.1.4
Zeta potential zeta-potential
Electrokinetic potential
Potential potential
A potential difference formed between the slip surface and the bulk liquid.
Note. The unit is volt [special] (V).
......
Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al.
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