CPH Lesson 7 Part 1

• Health is affected by the quality of the environment.
• Quality of the environment including air to breath, water to drink, food to eat, and the type of community to live.
• Environmental Health is the study and management of environmental conditions that affect the health and well-being of humans.
• Environmental hazards are factors or conditions in the environment that increase the risk of human injury, disease, or death.
• Outdoor Air Pollutants

  Air pollution

  • is air contamination that interferes with living organisms' comfort, safety, and health.
  • Air by substances, GASES, LIQUIDS, or SOLIDS, enough to harm humans, and the environment or alter the climate.
• Pollutants are generally divided further into:

  Primary pollutant

  Secondary pollutant
• Pollutants are generally divided further into:

  Primary pollutant

  • emanating directly from transportation, power and industrial plants, and refineries.
  • Examples.
  • carbon monoxide,
  • carbon dioxide,
  • sulfur dioxide,
  • nitrogen oxides,
  • hydrocarbons,
  • suspended particulates
• Pollutants are generally divided further into:

  Secondary pollutant

  • formed when primary air pollutants react with sunlight and other atmospheric components to form new harmful compound.

  Examples:

  • nitrogen dioxide,
  • nitric acid, nitrate salts,
  • sulfur trioxide,
  • sulfate salts,
  • sulfuric acid,
  • peroxyacetyl nitrates, and
  • ozone
• Photochemical smog (brown smog)

  • haze or fog formed when air pollutants interact with sunlight.
• Industrial smog (gray smog)

  • haze or fog formed primarily by sulfur dioxide and suspended particles from the burning of coal, also known as gray smog
• Health problems when air pollution reaches harmful levels:

  Acute health effects

  Chronic health effects
• Health problems when air pollution reaches harmful levels

  Acute health effects

  • Ex.
  • burning eyes,
  • shortness of breath, and
  • increased incidences of colds,
  • coughs,
  • nose irritation, and
  • other respiratory illness
• Health problems when air pollution reaches harmful levels:

  Chronic health effects

  • Ex.
  • chronic bronchitis,
  • emphysema,
  • increased incidence of bronchial asthma attacks, and
  • increased risk of lung cancer