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
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
Narrator: Gundel is currently collaborating with other scientists and the EPA to test this sampler at various sites across the country. For Science Today, I'm Larissa Branin.