EESA01H3 Lecture Notes - Lecture 5: Teratology, Chromated Copper Arsenate, Yatsushiro Sea
3 Mar 2018
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Document Summary
Heavy metals: naturally occurring, extracted from the earth, in ore. we mine them by digging deep, examples would include mercury, copper etc. When they are this toxic, they target speci c organs or areas. For example, arsenic targets hair and nails: wide environmental dispersion, tendency to accumulate in select tissues. There are metals that accumulate in the liver: toxic in even low concentrations or in a small dose. Classi cation of metals: class a: metals have low toxicity. These are also macronutrients which means they are required in very high amounts: class b: complete opposite. They are to essential and we don"t need them. They tend to form covalent bonds and very toxic (in both organic and inorganic form). They form soluble organometallics: metal and organic metallics: borderline: these fall between class b and class a. Includes copper, arsenic(metalloid which means it has the properties of a metal and a non metal), iron and zinc.
