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GB/T 32669-2016: Extinction spectra characterization of aggregate structure of gold nanorods
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| GB/T 32669-2016 | English | 379 |
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Extinction spectra characterization of aggregate structure of gold nanorods
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GB/T 32669-2016
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Basic data | Standard ID | GB/T 32669-2016 (GB/T32669-2016) | | Description (Translated English) | Extinction spectra characterization of aggregate structure of gold nanorods | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | G80 | | Classification of International Standard | 71.040.50 | | Word Count Estimation | 19,148 | | Date of Issue | 2016-04-25 | | Date of Implementation | 2016-11-01 | | Quoted Standard | GB/T 13966; GB/T 19619; GB/T 24369.1-2009 | | 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 a method for characterizing the structure of gold nanorod aggregates based on extinction spectroscopy. This standard applies to extinction spectroscopy characterization of gold nanorod aggregates structure, other precious metal nano-aggregates structure can also refer to the implementation. | GB/T 32669-2016: Extinction spectra characterization of aggregate structure of gold nanorods---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.
Extinction references characterization of aggregate structure of gold nanorods
ICS 71.040.50
G80
National Standards of People's Republic of China
Characterization of Aggregate Structure of Gold Nanometer Rod by Extinction Spectroscopy
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 1
4 Principle 2
5 instrument 3
Pretreatment of test samples
7 Measurement method 3
Calculation of agglomeration parameters of gold nanorod aggregates
9 measurement results 4
Appendix A (informative) Calculation example of gold nanoparticle agglomeration parameter AI
Appendix B (informative) EE and SS assembly characterization Example 9
Appendix C (informative) Evaluation of Uncertainty in Measurement Results 11
Appendix D (informative appendix) Reunion parameters Test report format 13
Reference 14
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 the standard units. the National Center for nano-science, the Beijing Entry-Exit Inspection and Quarantine Bureau, Shenzhen City, Germany-nanotechnology Limited.
The main drafters of this standard. Wu Xiaochun, Ji Yinglu, Tang Xiaoping, Shang Weili, Xu Hao.
Introduction
The gold nanorod is a rod-shaped gold nanoparticle that has a potential response in the fields of biological detection, biological imaging, disease diagnosis and treatment.
With value. According to the technical report issued by the International Organization for Standardization Nanotechnology Committee ISO /T R13014..2012 "Nanotechnology Project
Guidance on Physical and Chemical Parameter Characterization of Toxicity Evaluation of Nanomaterials ", which involves key physicochemical parameters including size and size distribution, agglomeration/aggregation
State, shape, surface area/specific surface area, composition, purity, surface chemistry, surface charge, solubility/dispersibility. This standard is consistent with its reunion/poly
Set the state corresponding.
The nanoparticle aggregates are aggregates formed by the aggregation of two or more nanoparticles together. So it is used to characterize the particle size
Methods, such as light scattering, microscopic imaging techniques, can be used for the characterization of aggregate structures. For gold with a surface plasmon resonance characteristic
Is a nanostructure, and the agglomerated state has a significant effect on this resonance characteristic, so it is also possible to characterize the agglomeration state according to its variation. At present domestic
The relevant standards have not yet been promulgated. This standard is based on extinction spectroscopy to characterize the structure of gold nanorod aggregates.
Characterization of Aggregate Structure of Gold Nanometer Rod by Extinction Spectroscopy
1 Scope
This standard specifies a method for characterizing the structure of gold nanorod aggregates based on extinction spectroscopy.
This standard applies to extinction spectroscopy to characterize the structure of gold nanorod aggregates, and other noble metal nanoclusters can also be used as reference.
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.
GB/T 13966 terminology for analytical instruments
GB/T 19619 Glossary of Materials for Nanomaterials
GB/T 24369.1-2009 Characterization of gold nanorods - Part 1. UV/Vis/near infrared absorption spectroscopy
3 terms and definitions
GB/T 13966, GB/T 19619 and GB/T 24369.1-2009 and the following terms and definitions apply to this document.
3.1
Aggregates
Strongly bound or fused particles of new particles, the outer surface of which may be significantly smaller than its individual particle surface area
Sum [2-3].
Note 1. The forces that support the aggregates are strong forces, such as covalent bonds or from sintering or complex physical entanglement.
Note 2. Aggregates are also referred to as secondary particles, while source particles are referred to as primary particles.
3.2
Agglomerate agglomerate
The aggregates, aggregates, or mixtures of weakly bound particles have a similar surface area to the sum of the surface area of their individual particles [2-3].
Note 1. The forces that support the aggregates are weak, such as van der Waals forces or simple physical entanglement.
Note 2. Agglomerates are also referred to as secondary particles, while source particles are referred to as primary particles.
3.3
Flocculation flocculation
The dispersed particles are contacted and adhered together to form a larger group of processes (IUPAC definition [4]).
3.4
Flocculation parameter flocculationindex
The integral area of the surface plasmon resonance peak in the gold nanoparticle extinction spectrum.
3.5
Aggregation parameter aggregationindex
The flocculation parameters in the gold nanoparticle extinction spectrum are divided by the maximum absorbance.
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