"We're a little concerned about the increasing concentrations of the fluorinated chemicals, which was one finding of our study that these these chemicals are increasing in concentrations still," Martin said. Unlike PCBs, fluorinated chemicals are not banned. As a result, they are widely banned, though they're still hanging around in the environment. PCBs have been known to collect in the Arctic for a while and have documented health effects relating to reproduction and child development. Right now we wouldn't tell anyone to change anything because of these discoveries. Download this stock image: Polar Bears head covered in blood - Spitsbergen - H8X0EC from Alamys library of millions of high resolution stock photos. He had been looking for fluorinated contaminants, which are chemicals commonly used in stain-repellents or to make Teflon, but also found in chlorinated toxins and PCBs. We left our eyes open to seeing things that were unexpected," said Martin. In the past, Martin said chemicals went through several steps of purification before they were tested.
The new chemicals were found because scientists from Canada and the United States took a different approach to looking at the blood samples. Jonathan Martin is a toxicologist at the University of Stockholm in Sweden.
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