Narrator: This is Science Today. A new air sampler, which can
effectively trap and evaluate fine particle pollutants in both
their solid and gas phases has been developed by scientist Lara
Gundel of the Lawrence Berkeley National Laboratory. This
sampler can greatly impact future EPA air quality standards and
lead to a definitive understanding of how pollutants such as
polycyclic aromatic hydrocarbons and pesticides, affect our
health. Gundel: I guess the innovations we made were a way to
separate the gases and particles accurately and then to be able
to collective measure particles and the gases separately and
accurately. Narrator: Gundel achieved this by coating an inner
tube of roughened glass inside the filter with sticky resin
beads, which were finely ground up until their pores were small
enough to trap gas particles. Gundel: We quickly decided that
this new technology that we had, these new kinds of sampler
designs, could be used in outdoor air, in general atmospheric
questions. Narrator: Gundel is cur