ENSC 201 Lecture Notes - Lecture 6: Environmental Toxicology, Toxicant, Biphenyl
23 Jan 2019
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Test next tuesday 10:30, written in tutorial room. Material covers up to this lecture (lec 6) Let"s start with this slide from lectures 1 and 4: exposure and hazard are linked to environmental chemistry, we will emphasize related chemical properties. Persistent organic pollutants (pops: conventional organic compounds which are significantly environmental problems are. Persistent organic pollutants (pops: stockholm convention (1972) on, pops declare 12 priority compounds (dirty dozen) First 9 compounds: compounds intentionally made and intentionally released into the environment: pcbs: compounds intentionally made but unintentionally released into the environment, dioxins and furans: compounds accidentally made and accidentally released into the environment. 2: relative toxicity defined by relative values like lc50 or ld50. 3: need to take into account how persistent the compound is as well as its toxicity. Subject of rachel carson"s book "silent spring" in 1962. Dde is not an insecticide, but is just as toxic to birds and mammals as ddt.
