Though fatty fish is richer in omega-3s, they're also more likely to harbor environmental contaminants.

"Therefore, it is common sense that we develop a rational and consistent policy for addressing human exposures to environmental contaminants," he said.

Ozone can also react with many of the important environmental contaminants.

When something gets tossed into the trash, it ends up somewhere else - possibly as an environmental contaminant.

"A strong case cannot be made for singling out environmental contaminants as a driving force" in rising cancer rates, he concluded.

And more than one speaker expressed concern about the hazards of environmental contaminants in fish oil.

But possible threats from environmental contaminants must be better understood, he added.

In addition, this laboratory offers a further education programme which is particularly concerned with the consideration of environmental contaminants.

With a suitport, dust or other environmental contaminants cannot enter the cabin of the vehicle.

The grasses also act as a filter, clearing the bay of environmental contaminants.