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My Documentt Essay

  • Submitted by: poppey
  • on March 26, 2014
  • Category: English
  • Length: 1,359 words

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Below is an essay on "My Documentt" from Anti Essays, your source for research papers, essays, and term paper examples.

Toxic substances

What are the toxic substances found in most fires?

    • Toxic gases

    • Corrosive compounds

    • Toxic particulate matter

The following gases are usually the most lethal compounds in fires?

    • Carbon monoxide

    • Carbon dioxide

    • Sulfur dioxide

    • Hydrogen sulfide

    • Nitrogen dioxide

    • Ammonia

How are toxic or hazardous substances identified in storage and transportation?

    • Chemicals are usually identified by HazChem symbols like the following:

      [pic] Toxic

      [pic] Flammable

      [pic] Oxidizer

      [pic] Corrosive

      [pic] Explosive

      [pic] Pollutant

      [pic] Biohazard

      [pic] Radioactive

      [pic] Warning

What is a toxic substance?

    • A substance that will have negative health effects on the environment and people when exposure occurs.

How can toxic substances enter the body?

Ingestion: Swallowing a substance.

Inhalation: Breathing in a substance.

Skin absorption: Substance absorbs through the skin into the bloodstream.




Some common ways toxic substances affect the body

    • Can cause immediate death.

    • May cause localized effect at the site of contact.

    • May target specific organs which may cause dysfunction or failure.

  Specific organ toxin classes:

      • Hemotoxicant

      • Hepatotoxicant

      • Nephrotoxicant

      • Neurotoxicant

      • Reproductive toxicant

      • Asphyxiants

Asphyxiants work in either one of 3 ways:

    • Denial of sufficient oxygen – CO2 displaces O2

    • Act as a hemotoxicant – CO reacts with hemoglobin preferentially over O2

    • Inability to use cellular oxygen – HCN prevents cells from using O2

Types of toxicological effects

    • Acute health effects

    • Chronic health effects

    • Short-term health effects

    • Latent health...

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  • Submitted by: poppey
  • on March 26, 2014
  • Category: English
  • Length: 1,359 words
  • Views: 148
  • Popularity Rank: 448647
  • 1 rating(s)


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