(AIR POLLUTANTS) OCCUPATIONAL AND ENVIRONMENTAL Flashcards
DESCRIPTION
Colorless, tasteless, odorless, and nonirritating gas
DESCRIPTION
Colorless irritant gas generated primarily by the combustion of sulfur-containing fossil fuels
DESCRIPTION
Brownish irritant gas sometimes associated with fires
DESCRIPTION
Relatively insoluble deep lung irritant
DESCRIPTION
Bluish irritant gas found in the earth’s atmosphere
DESCRIPTION
Important absorbent of ultraviolet light at high altitude
DESCRIPTION
Irritant of mucous membranes
SOURCE
Byproduct of incomplete combustion
SOURCE
Burning of coal, both for domestic heating and in coal-fired power plants
SOURCE
Formed from fresh silage
SOURCE
Automobile and truck traffic emissions
SOURCE
Emitted from power plants, motor vehicles, and other sources of high-heat combustion
SOURCE
Emitted from motor vehicles, chemical plants, refineries, factories, gas stations, paint, and other sources
SOURCE
Can be generated in the workplace by high-voltage electrical equipment, and around ozone-producing devices used for air
and water purification
SOURCE
Agricultural sources
MECHANISM OF ACTION
Combines tightly but reversibly with the oxygen-binding sites of hemoglobin
MECHANISM OF ACTION
Product formed: carboxyhemoglobin
MECHANISM OF ACTION
At room temperature, the solubility of SO2 is approximately 200 g SO2/L of water
MECHANISM OF ACTION
High solubility = when SO2 contacts moist membranes, it transiently forms sulfurous acid
MECHANISM OF ACTION
Inhalation damages the lung infrastructure that produces the surfactant necessary to allow smooth and low-effort lung alveolar
expansion
MECHANISM OF ACTION
Type I cells of the alveoli appear to be the cells chiefly affected by acute low to moderate inhalation exposure.
MECHANISM OF ACTION
penetration in the lung depends on tidal volume
MECHANISM OF ACTION
toxicity may result from the formation of reactive free radicals
