Denmark’s Environmental Protection Agency (DEPA) recently released "Survey on basic knowledge about exposure and potential environmental and health risks for selected nanoparticles". The survey was written by Sonja Hagen Mikkelsen, Erik Hansen and Trine Boe Christensen of COWI A/S, Anders Baun and Steffen Foss Hansen of DTU Environment and Mona-Lise Binderup of DTU Food, all working under contract with DEPA.
Noting that "There is no single source of information that provides an overview of nanomaterials and products in Denmark or in the EU for that matter",
DEPA has therefore initiated this project to provide an overview of the existing knowledge about seven of the most common nanomaterials, their environmental and health properties, the use of those nanomaterials and the possibility of exposure of humans and the environment.
The seven nanomaterials selected as the focus of the survey are
1 – Titanium dioxide
2 – Cerium dioxide
5- Zero-valent iron
6 – Silicium dioxide
7 – Nanoclay
These nanomaterials were selected based on
1- Application volums
2- Potential human exposure
3- Potential direct discharge into the environment
4 – Expected biological effect (human and/or environment), persistence or bioaccumultion
The authors of the survey developed "profiles" for the nanomaterials, focusing on " the general characteristics and manufacture of the nanomaterial, their current uses (mainly focused at consumer products) and hazard profiles (ecotoxicity and human toxicity) . . . . The profiles included sections discussing relevant exposures from consumer products and considerations regarding the …