PBHL 2102 Study Guide - Midterm Guide: Diethyl Phthalate, Parathion Methyl, Vinyl Chloride
23 Mar 2017
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Chapter 6: name 5 heavy metals that pose health hazards to humans. Arsenic, mercury, iron, tin, lead, chromium, nickel, beryllium, cadmium: state mechanisms and/or sources for exposure of humans to toxic metals. The lungs (through inhalation of dusts, metal fumes, and vapors), skin (through contract with dusts), by mouth (ingestion) Contract with high concentrations of toxic metals is mostly to occur in an occupational setting. Lower level exposures may result from contact with the ambient enviorment. 4 major medias for exposure to heavy metals air, soil/dust/ water, and biota (animal and plant life)/food: distinguish between essential and toxic levels of trace metals; name specific metals in these categories. Essential trace metals are required to maintain health. When too much is consumed, it can have toxic effects or lead to death. If too little of the trace metals are consumed dietary deficiencies can result.
