ASTM WK39049

    Work Item: ASTM WK39049 - New Guide for Sample Preparation of Charge-Stabilized Metal Nanoparticles for Electron Microscopy

    Developed by Subcommittee: E56.02 | Committee E56 | Contact Staff Manager



    1. Scope

    This guide establishes a standard method for the preparation of stabilized metal particle samples, which are solely or predominantly sub-100 nm, for electron microscopy to allow for accurate and reproducible measurement of particle size. Specifically, it provides a general overview to the use of functionalized substrates for the microscopy of metal particles that are suspended, dissolved, or otherwise dispersed in aqueous solvent and have a positive or negative surface charge. Examples of such materials include citrate-stabilized (negative) gold or silver nanoparticles, polyvinylpyrrolidone-stabilized (negative) metal particles, or poly-l-lysine-stabilized (positive) particles.

    No existing standard in this area.


    Keywords

    Particle size distribution, electron microscopy, sample preparation, particle characterization

    The title and scope are in draft form and are under development within this ASTM Committee.

    Citing ASTM Standards
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