JRC scientists commented on a recent article that appeared in the Journal of Nanoparticle Research concerning the use of "volume-specific surface area" (VSSA) for classification of nanomaterials.
The article proposed a model for calculation of the VSSA of particulate materials that does not match the results that are measured using the most commonly applied BET gas adsorption method. This is demonstrated in the JRC Comments paper using two simple "back-of-the-envelope" calculations. It is made clear that the proposed model, in effect, redefines VSSA in a way that is inconsistent both with previous work and with experiment, and therefore cannot be used as a basis for practical implementation of the European Commission's recommended definition of "nanomaterial".
Further information: Elaborations on the use of volume-specific surface area to classify nanomaterials
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