Our research demonstrates that global controls on the distribution of persistent, bioaccumulative toxic compounds need to be considered.

Industrial areas are often contaminated of the soil by oil, toxic and persistent organic compounds.

These persistent compounds can mimic the effect of thyroid hormones, and interfere with reproduction and nerve and tissue development.

While other substitutions produce relatively persistent compounds, in organic synthesis the term largely refers to species with three amino substituents bound to phosphorus.

The use of more persistent and less volatile compounds such as the chloramines has posed a serious problem for many fishkeepers.

So a technique that could destroy them, without producing dioxins and furans, which are also persistent compounds, would be very desirable.

Toxic or persistent organic compounds of silicon.

By 1974, the Rothamsted team had discovered a 2nd generation of more persistent compounds notably: permethrin, cypermethrin and deltamethrin.

However, their continued presence in fish is due to the fact that they are very persistent compounds, which can still be found in the environment.

Among anglers in the Great Lakes basin, sport fish consumption is the largest dietary contributor to persistent compounds [ 17 ] .