Environmental Science 3300F/G Midterm: Midterm 2 Lecture Objectives for Metals part 1
22 Mar 2018
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Metal: material that is typically hard, opaque, shiny and has good electrical and thermal conductivity. The (cid:862)goldilocks zo(cid:374)e(cid:863): just the right amount the term chelate, give an example: a compound containing a ligand bonded to a central metal atom at two or more points e. g. edta metallothionien the ter(cid:373) (cid:862)speciatio(cid:374)(cid:863) as applied to (cid:373)etals. Sink, as used in the environment: permanent repository for a pollutant. The evidence for identifying hydrothermal vents (black smokers) as possible environments for the origin of life: highly enriched in iron, manganese, sulfur, other minerals. Why alkylated pb2+ compounds are regarded as being especially toxic: they can cross the blood-brain barrier and placenta. Why pb(r)4 added to gasoline is a particular health hazard. It is volatile: readily absorbed through skin and inhaled how leaded gasoline can be a source of airborne lead particles. The correlation between lead and incidents of lead poisoning associated with works of art.
