ENVS 1126 Lecture Notes - Lecture 34: Riebeckite, Lead Hydrogen Arsenate, Asbestosis
25 Nov 2016
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Hazardous chemicals part 2: pcbs, polychlorinated biphenyls (pcbs, pcbs are chemically inert, nonflammable fluid with high plasticizing ability, and a high dielectric constant. 0. 53ppm: sources of pcb exposure, using old fluorescent lighting fixtures or old tvs and refrigerators (may leak. In north america lead has been used in agriculture in the form of lead arsenate for pesticide use, as solder in pipes, as a solder in food containers, and as an antiknock compound in gasoline. Slows normal maturation of red blood cells in bone marrow inhibits synthesis of hemoglobin: mercury, three (3) forms, organic (usually methyl) mercury (most toxic, elemental mercury vapor, inorganic mercury compounds. These forms of mercury are absorbed differently. Mercury is used in the production of chlorine, for use in thermometers, batteries and fluorescent light bulbs. Organic (usually methyl) mercury: symptoms appear after 1-2 months (slow!, symptoms:
