why does chemical persistence matter

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  • What is persistence of a chemical?

  • Persistence is usually described as the half-life (T ) of a chemical in water, soil, sediment, or air. The T is the amount of time necessary for a given amount of chemical released into the environment to decrease to one-half of its initial value.

  • Is persistence a hazard criteria?

  • Persistence is a hazard criterion for chemicals enshrined in chemical regulation worldwide. In this paper, we argue that the higher the persistence of a chemical, the greater the emphasis that it should be given in chemicals assessment and decision making.

  • Why is high persistence alone a cause of concern?

  • – Environmental Science: Processes Impacts (RSC Publishing) Why is high persistence alone a major cause of concern? Persistence is a hazard criterion for chemicals enshrined in chemical regulation worldwide.

  • How important is persistence in chemical assessment and decision making?

  • In this paper, we argue that the higher the persistence of a chemical, the greater the emphasis that it should be given in chemicals assessment and decision making.

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