A.7 Dioxins and dioxin-like compounds (SL)

Understandings:
Dioxins contain unsaturated six-member heterocyclic rings with two oxygen atoms, usually in positions 1 and 4.
Chlorinated dioxins are hormone disrupting, leading to cellular and genetic damage.
Applications and skills:
Comparison of the structures of polychlorinated biphenyls (PCBs) and dioxins.
Guidance:
Dioxins do not decompose in the environment and can be passed on in the food chain.
Consider polychlorinated dibenzodioxins (PCDD) and PCBs as examples of carcinogenic chlorinated dioxins or dioxin-like substances.