Pollution

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  • Mercury Pollution
    • Organic forms like dimethyl mercury are more toxic
    • Sources
      • Fossil fuel combustion
      • Industrial activities
    • Effects
      • Neurotoxin
      • Enzyme inhibition in CNS
      • Embryonic abnormalities
      • Endocrine disrupter
    • Symptoms
      • Shaking, imbalance
  • Minarchata Bay, Japan
    • Used an inorganic catalyst for plastic and petrochemical manufacture
    • Mercury Pollution
      • Organic forms like dimethyl mercury are more toxic
      • Sources
        • Fossil fuel combustion
        • Industrial activities
      • Effects
        • Neurotoxin
        • Enzyme inhibition in CNS
        • Embryonic abnormalities
        • Endocrine disrupter
      • Symptoms
        • Shaking, imbalance
    • Dumped waste in bay which had a bio-magnifying effect
    • Japanese lost muscle control, got dmentia, developmental problems in children
  • Sources
    • Lead from lead pipes dissolves in water
    • Added to petrol to reduce early engine ignition so is released as fumes and partiulates
    • Added to paint and released as fumes from pigment
    • Released from industrial processes and smelting as lead dust
    • Combustion of fossil fuels- esp. coal
    • Lead Pollution
      • Effects
        • Neurotoxin- causes brain damage
        • Kidney damage from chronic exposure
  • Effects
    • Neurotoxin- causes brain damage
    • Kidney damage from chronic exposure
  • Causes autoimmunity
    • Developmental problems
      • Non-competitive inhibitor of metabolic enzymes
  • Management
    • Bans on leaded petrol and leaded paints
    • Use low temperature to remove paint
    • Replace lead pipes
    • Lead Pollution
    • Safer for workers
      • Personal protection equipment- respirators
      • Fume/particle removing technology
      • Management
        • Bans on leaded petrol and leaded paints
        • Use low temperature to remove paint
        • Replace lead pipes
    • Heavy Metal Pollution
      • Sources
        • Metal ore mining
        • Smelting
        • Industrial processes/products
        • Natural sources in soil
        • Acid rain
      • Accumulative Properties
        • Lipophilic
        • Accumulate in fatty tissues
        • Persistent
        • Can't be metabolised
        • Not excreted
      • Effects
        • Toxic
        • Non-competitive inbhibitors
        • Affects nerve impulses in CNS
        • Liver/Kidney/Lung/Bladder/Reproductive Organ damage and disease
      • Synergism
        • Cadmoum and zinc found in deposits together and affect the body in the same way
      • Biomagnifying
    • Synergism
      • Cadmoum and zinc found in deposits together and affect the body in the same way
    • Management
      • Adding alkaline reagent makes them less mobile and available

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