The latest meeting of national committee of nanotechnology standards (meeting no. 102) was held on November 1, 2021 to discuss and review the final draft of national standard entitled as "Nanotechnology- a method for determining the concentrations of Carbon black and amorphous Silica in the nanoparticle size range in the atmosphere of a mixed powder production environment" The final conclusion of this meeting was the approval of this standard.. Ferrous carbon and amorphous Silica nanomaterials are used in various consumer products such as rubber products, insulation materials, etc. Despite the widespread use of this type of nanomaterial, determining the concentration of each specific nanomaterial in a mixed powder environment has been known as a barrier to setting specific exposure limits of nanomaterials for workers who are commonly exposed to those nanomaterials. This standard provides guidelines for quantifying and detecting concentrations of Ferrous Carbon nanoparticles and amorphous Silica based on size in air samples collected from an industrial production environment. This standard is applicable for sampling where there is a variety of materials. In the method described in the standard for identification of the type of nanoparticles, the samples are analyzed using TEMand EDS to determine morphology and elemental composition of nanoparticles.The obtained information is used to determine the concentration of materials as a function of size.
This national standard was developed with the participation of experts from universities, Iran National Organization for Standardization, industrial companies and Iran Nanotechnology Innovation Council.
February 02, 2022
Standard & Certification
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