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Nanotechnologies—Assessment of the concentrations of carbon black and amorphous silica in nanoscale in a mixed dust manufacturing environment
Standard in brief
Scope of Application：
This document provides guidelines for the quantitative analysis and identification of airborne carbon black and/or amorphous silica particles in terms of number concentration (units/cm 3) based on particle size in air samples collected in mixed dust industrial manufacturing environments. This document describes a method for collecting air samples on a 25 mm diameter polycarbonate membrane using a charged low-pressure cascade impact sampler (ELPCI). This document applies to the sampling of air in manufacturing environments containing many types of particles. This document should only be used in environments where aerosols consisting of particles differing in chemical and physical properties or where disturbances are controlled (e.g., diesel sources). Although other sampling methods may be applicable, this document is limited to describing methods relevant to ELPCI. Samples collected by ELPCI are analyzed for particle morphology and elemental composition by TEM and EDS to determine particle type. This information is combined with size particle concentration information determined by ELPCI to obtain the airborne concentration of the target material.
Basic information
Standard No：GB/Z 43998-2024
Standard Name：纳米技术 混合粉尘制造环境空气中纳米级炭黑和无定形二氧化硅浓度的测量方法
English Name：Nanotechnologies—Assessment of the concentrations of carbon black and amorphous silica in nanoscale in a mixed dust manufacturing environment
Standard Status：To be implemented
Release Date：2024-04-25
Effective Date：2024-11-01
Language of Publication：Simplified Chinese
Publication Information
Number of pages：20
Number of words：27 K
Other Information
Technical Committees：National Technical Committee for Standardization of Nanotechnology (SAC/TC 279)
Proposed Unit：Chinese Academy of Science
Application Dept：State Administration for Market Supervision and Administration, State Standardization Administration
