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Contents contributed and discussions participated by Cheyanne Strong

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Cheyanne Strong

Mercury: MedlinePlus Medical Encyclopedia - 4 views

www.nlm.nih.gov/...002476.htm

shared by Cheyanne Strong on 01 Dec 11 - No Cached
    • Cheyanne Strong
      Cheyanne Strong on 01 Dec 11
       
      hey hannah
    • Cheyanne Strong
      Cheyanne Strong on 01 Dec 11
       
      i know its bad
  • Elemental mercury, also known as liquid mercury or quick silver Inorganic mercury salts Organic mercury
  • Elemental mercury is usually quite harmless if touched or swallowed
Cheyanne Strong

Basic Information about Mercury (inorganic) in Drinking Water | Basic Information about... - 3 views

water.epa.gov/...mercury.cfm

mercury drinking water

shared by Cheyanne Strong on 23 Nov 11 - No Cached
  • What is mercury?
  • What is mercury?
  • rcury
  • ...75 more annotations...
  • What is mercury
  • What is mercury?
  • What is mercury?
  • What is
  • What is
  • Uses for mercury.
  • Uses for mercury
  • Mercury is a liquid
  • metal
  • Mercury is a liqu
  • Electrical products such as dry-cell batteries, fluorescent light bulbs, switches, and other control equipment
  • 50 percent of mercury used
  • What are mercury's health effects?
  • Some people who drink water containing mercury well in excess
  • Some people who drink water containing mercury well in excess
  • Some people who drink water containing mercury well in excess
  • Some people who drink water containing mercury well in excess
  • well in exce
  • mercury well in excess
  • Some people who drink water containing mercury well in excess
  • experience kidney damage
  • Some people who drink water containing mercury well
  • Some people who drink water containing mercury
    • Cheyanne Strong
      Cheyanne Strong on 23 Nov 11
       
      Hey what i was goin to highlight wasw the first paragraph but it wouldnt let me so i decided instead to just tell yal on dis sticky note
  • What are EPA's drinking water regulations for mercury
  • Some people who drink water containing mercury well in excess
  • Some people who drink water containing mercury well in excess
  • In 1974, Congress passed the Safe Drinking Water Act
  • law requires EPA to determine
  • Some people who drink
  • could experience kidney damage
  • years could experience
  • many years could
  • many years could
  • contaminants
  • drinking water
  • drinking water at which no adverse health effects
  • likely to occur
  • non-enforceable health goals, based solely
  • possible health risks
  • exposure over a lifetime
  • adequate margin
  • safety
  • called maximum
  • contaminant level goals
  • Contaminants
  • Contaminants
  • Contaminant
  • Contaminants
  • any physical, chemical, biological or radiological substances or matter in water.
  • ontamina
  • (MCLG). Contaminants
  • The MCLG for mercury is 0.002 mg/L or 2 ppb
  • EPA has set this level of protection based on the best available science
  • prevent potential health problems
  • EPA has set an enforceable regulation for mercury
  • called a maximum contaminant level (MCL),
  • MCLs are set as close to the health goals as possible
  • considering cost
  • benefits
  • the ability of public water systems
  • detect and remove contaminants using suitable treatment technologies
  • this case, the MCL equals the MCLG, because analytical methods or treatment technology do not pose any limitation
  • The Phase II Rule, the regulation for mercury, became effective in 1992
  • The Safe Drinking Water Act requires EPA to periodically review the national primary drinking water regulation for each contaminant and revise the regulation, if appropriate. EPA reviewed mercury as part of the Six Year Review and determined that the 0.002 mg/L or 2 ppb MCLG and 0.002 mg/L or 2 ppb MCL for mercury are still protective of human health.
  • major sources
  • erosion of natural deposits
  • discharge from refineries
  • discharge from refineries and factories
  • discharge from refineries and factories
  • discharge from refineries and factories
  • discharge from refineries and factories; runoff from landfills; and runoff from croplands.
  • i  ndustries
  • i  ndustries, which manufacture, process, or use significant amounts of toxic chemicals, to report annually on their
  • i  ndustries, which manufacture, process, or use significant amounts of toxic chemicals, to report annually on their
Cheyanne Strong

Ask TreeHugger: Is Mercury from a Broken CFL Dangerous? : TreeHugger - 8 views

www.treehugger.com/...om-a-broken-cfl-dangerous.html

cfl

shared by Cheyanne Strong on 22 Nov 11 - No Cached
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      Cheyanne Strong on 22 Nov 11
       
      Emily-pink CHeyanne-green Hannah-blue
    • Cheyanne Strong
      Cheyanne Strong on 23 Nov 11
       
      kk
  • CFL containing 5 mg of mercury breaks in your child’s bedroom that has a volume of about 25 m3 (which corresponds to a medium sized bedroom). The entire 5 mg of mercury vaporizes immediately (an unlikely occurrence), resulting in an airborne mercury concentration in this room of 0.2 mg/m3. This concentration will decrease with time, as air in the room leaves and is replaced by air from outside or from a different room. As a result, concentrations of mercury in the room will likely approach zero after about an hour or so.
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