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Delivery: <= 3 days. True-PDF full-copy in English will be manually translated and delivered via email. GBZ43032-2023: Nanotechnologies - Characterization of metal and metal-oxide nano-objects in water - Sample preparation Status: Valid
Basic dataStandard ID: GB/Z 43032-2023 (GB/Z43032-2023)Description (Translated English): Nanotechnologies - Characterization of metal and metal-oxide nano-objects in water - Sample preparation Sector / Industry: National Standard Classification of Chinese Standard: C04 Classification of International Standard: 07.030 Word Count Estimation: 14,143 Date of Issue: 2023-09-07 Date of Implementation: 2024-04-01 Issuing agency(ies): State Administration for Market Regulation, China National Standardization Administration GBZ43032-2023: Nanotechnologies - Characterization of metal and metal-oxide nano-objects in water - Sample preparation---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. GB /Z 43032-2023.Sample preparation method for characterization of metal and metal oxide nano-objects in nanotechnology water samples ICS 07.030 CCSC04 National Standardization Guiding Technical Documents of the People's Republic of China Nanotechnology metals and metal oxide nanoparticles in water samples Object Characterization Sample Preparation Methods Published on 2023-09-07 2024-04-01 Implementation State Administration for Market Regulation Released by the National Standardization Administration Committee Table of contentsPrefaceⅠ Introduction II 1 Scope 1 2 Normative reference documents 1 3 Terms and Definitions 1 4 Abbreviations 2 5 Types of metal-based and metal oxide-based artificial nanoobjects 2 6 Water matrix type 2 7 Sample collection and storage2 7.1 General 2 7.2 Sample collection and storage containers3 8 Sample pretreatment 3 8.1 Overview 3 8.2 Sedimentation and centrifugation 3 8.2.1 Settlement 3 8.2.2 Centrifugation 3 8.2.3 Stepwise sedimentation and centrifugation 4 8.2.4 Factors affecting centrifugation and sedimentation 4 8.2.5 Advantages and limitations of centrifugation 4 8.3 Filter 4 9 Particle size classification technology 5 9.1 Overview 5 9.2 Field Flow Separation (FFF) 5 9.2.1 Overview 5 9.2.2 Advantages and limitations5 9.3 Ultrafiltration (UF) 6 9.4 Size Exclusion Chromatography (SEC) 6 Appendix A (informative) Related nano-object characterization techniques 7 Reference 8ForewordThis document complies with the provisions of GB/T 1.1-2020 "Standardization Work Guidelines Part 1.Structure and Drafting Rules of Standardization Documents" Drafting. This document is equivalent to ISO /T R20489.2018 "Sample Preparation for Characterization of Metals and Metal Oxide Nano-Objects in Nanotechnology Water Samples" Preparation Methods". The document type was adjusted from ISO 's technical report to my country's guiding technical document. This document has made the following minimal editorial changes. ---In order to coordinate with the existing standards, the name of the standard is changed to "Characterization Samples of Metals and Metal Oxide Nano-Objects in Nanotechnology Water Samples" Product Preparation Methods". Please note that some content in this document may be subject to patents. The publisher of this document assumes no responsibility for identifying patents. This document is proposed by the Chinese Academy of Sciences. This document is under the jurisdiction of the National Nanotechnology Standardization Technical Committee (SAC/TC279). This document was drafted by. Zaozhuang University, Institute of Basic Medicine, Chinese Academy of Medical Sciences. The main drafters of this document. Zong Mingji, Liu Jianbo, Wen Tao, Xu Haiyan.IntroductionArtificial nanoobjects are increasingly used in commercial products such as consumer goods, healthcare products, solar panels, batteries, surface coatings and water treatment. In larger quantities, these nano-objects will eventually be released into the natural environment, especially water environments. However, the release of man-made nanoobjects into the aquatic environment Finally, the technical data on its "existence state", "transportation" and "fate" are currently very limited. At the same time, with the current global water supply shortage As demand for water recycling increases, so do concerns about the potential health effects of man-made nanoobjects in water. The environmental parameters of the aqueous matrix in which nano-objects are located [such as natural organic matter content, pH, ionic strength (IS), etc.] are very important because they These parameters may affect the size, final product, stability and chemical composition of the nanoparticles. A water sample containing artificial nano-objects may It is very complex because it contains a series of nanoparticles with different properties, particle size, reactivity, composition, agglomeration state and shape. therefore The preliminary preparation process of the sample, such as pretreatment and particle size screening, is very critical for the subsequent analysis of nano-objects. Some studies have listed common See screening technology. Although several methods for the detection and characterization of artificial nanoobjects in water matrices are described in ISO /T R18196.2016, these methods The law is still in various stages of development of technical specifications or standards. More importantly, for artificial nano-objects in water samples, there is currently no Accepted standards for pre-analytical handling (i.e. collection, storage and particle size sieving). This document facilitates comparison of data between different laboratories comparison, which will facilitate subsequent research on commercial products containing artificial nanoobjects, thereby ultimately supporting the development of nanotechnology-related industries. develop. Nanotechnology metals and metal oxide nanoparticles in water samples Object Characterization Sample Preparation Methods1 ScopeThis document describes the sample preparation methods (i.e. pretreatment and particle size sieving) used for analytical measurements of samples in water. its system Preparation methods include sample collection and storage, preconcentration and screening of various analytes. This document is applicable to surface or drinking water containing corresponding quantities and types of metal and metal oxide nanoobjects.2 Normative reference documentsThis document has no normative references.3 Terms and definitionsThe following terms and definitions apply to this document. 3.1 Nanomaterials with specific functions or compositions manufactured for commercial purposes. [Source. GB/T 30544.1-2014,2.9] 3.2 measured measurerand The quantity to be measured. [Source. ISO /IEC Guide99.2007,2.3, modified] 3.3 nano-object nano-object An object with one, two, or three external dimensions at the nanometer scale. Note. A general term used for all nanoscale objects that are separated from each other. [Source. GB/T 30544.1-2014,2.5] 3.4 Materials with nanostructures inside or on their surface. Note. This definition does not exclude the possibility that nanometer objects (3.3) have internal or surface nanostructures. If the outer dimension(s) are on the nanometer scale degree, the term “nanoobject” is recommended. [Source. GB/T 30544.1-2014,2.7] 3.5 surface water surface water Water that flows or remains on the surface of land. [Source. ISO 13164-1.2013,3.1.20] ...... |
