Regional multimedia distribution of nanomaterials and associated exposures: A software platform

摘要

An integrated modeling platform was developed for assessing the potential release rates of ENMs and their environmental distribution. ENM release rates are estimated via life cycle assessment based approach by tracking the target ENM throughout its life cycle from production to release to the environment. Potential ENM exposure concentrations and mass distribution in the various environmental media (i.e., air, water soil, vegetation) are then evaluated via multimedia modeling that considers the environment as a collection of compartments linked by mechanistic intermedia transport processes. A web-based software implementation of the modeling platform enables rapid “what-if?” scenario analysis, which can be used to assess the response of environmental system to various scenarios of ENM releases, investigate the impact of geographical and meteorological parameters on ENM distribution in the environment, compare the impact of ENM production and potential releases on different regions, we well as estimate source release rates based on monitored ENM concentrations. Moreover, the present modeling platform is suitable for research and teaching regarding environmental multimedia impact assessment at both the undergraduate and graduate levels. It is envisioned that the present multimedia analysis platform can assist regulators, industry, and researchers to rapidly and critically assess the potential environmental implications of ENMs and thus ensure that nanotechnology is developed in a productive and environmentally responsible manner.