Mercury Hazards • All forms of mercury are toxic. • Mercury is volatile and can be inhaled as a vapor. • Mercury is also absorbed through the skin. • Health effects include nervous system impairment and kidney damage. • Liquid mercury breaks up into small droplets that can scatter. • See the Material Safety Data Sheet (MSDS) for further health hazard information. • Dartmouth mercury poisoning incident: http://en.wikipedia.org/wiki/ Karen_Wetterhahn 2 Engineering Controls • Always use mercury in a fume hood with adequate ventilation or with a vapor containment system. • Use catch basins and pans made of smooth ...
Topics • Mercury (Hg) and variations • Properties • Historic uses • In-home uses • Amalgams • Dental use • Health effects • Hg poisoning • Respirator recommendations • Response safety • Bibliography PPT-056-01AP 2 Mercury Awareness and Safety • Atomic number 80 • Also known as quicksilver • Only metal that is liquid at standard conditions for temperature and pressure • Only other element that is liquid under these conditions is bromine PPT-056-01AP 3 Mercury (Hg) • Mercury occurs as deposits; mostly as cinnabar, known as mercuric sulfide. • Cinnabar: Highly toxic by ingestion or dust inhalation • Elemental ...
Topics • Mercury (Hg) and variations • Properties • Historic uses • In-home uses • Amalgams • Dental use • Health effects • Hg poisoning • Respirator recommendations • Response safety • Bibliography PPT-056-01AP 2 Mercury Awareness and Safety • Atomic number 80 • Also known as quicksilver • Only metal that is liquid at standard conditions for temperature and pressure • Only other element that is liquid under these conditions is bromine PPT-056-01AP 3 Mercury (Hg) • Mercury occurs as deposits; mostly as cinnabar, known as mercuric sulfide. • Cinnabar: Highly toxic by ingestion or dust inhalation • Elemental ...
Mercury poisoning • There are 3 different forms of mercury - elemental - inorganic - organic • Each has a different toxicological profile Sources of mercury • Elemental mercury: – Sphygmomanometers, thermometers, barometers – Liquid at room temp – volatilises easily • Inorganic mercury: – Traditional remedies (ayurvedic, chinese) – Used in gold extraction, caustic soda manufacturing – Rodenticides • Organic mercury: – Fungicides, seed dressings – Methylmercury in fish Mercury - Absorption •Inhalation : 60-80% •Dermal : 3-15% •GI Tract : Metallic ...
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