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Raleigh NC

Discussion in '2006 Archive' started by El_Guero, Oct 6, 2006.

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  1. El_Guero

    El_Guero New Member

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    Raleigh, NC is reported as being endangered by a toxic waste cloud.

    Pray for those affected . . . If you want tell your stories about how much safer one is in the toxic zone than sitting on your porch drinking a mint julip . . . ;) Do so after you lift up a prayer to God Almighty. Pray for rain . . . pray that God will reduce the severity of the gases . . .

    http://www.cnn.com/2006/US/10/06/plant.fire/index.html
     
    #1 El_Guero, Oct 6, 2006
  2. The Galatian

    The Galatian New Member

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    Chlorine is nasty stuff. But it does dissolve nicely in water, and will be gone with no residue if that's all it was.

    I got a lungful of it in a lab accident about 40 years ago. For about four hours, I was miserable. And then it went away. Didn't seem to leave any permanent damage. I played soccer back then, and could still run for two 45 min halves.

    A large dose of it for a healthy person, or a smaller dose for a person with heart or lung problems could be fatal.

    LD50 (level at which one-half of exposed organisms are killed) is about 800-1000 parts per million in mammals. The OSHA PEL for Chlorine is 1.0 ppm, compared to 0.1 ppm for Ozone.

    As usual, children and the elderly are most at risk.
     
    #2 The Galatian, Oct 6, 2006
  3. Martin

    Martin Active Member

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    Faith:
    Baptist
    Local News

    You can get local North Carolina news by looking at one of the two websites below:

    WRAL

    WTVD
     
    #3 Martin, Oct 6, 2006
  4. El_Guero

    El_Guero New Member

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    LD50 . . . half are killed? Or, half are expected to die?

    ;)


     
    #4 El_Guero, Oct 6, 2006
  5. The Galatian

    The Galatian New Member

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    Half are killed. You see, even with horrendously lethal doses, a few lucky ones somehow survive. A more accurate measure of lethality is the dose at which half of them die.

    Hence, "LD50" the dose at which half of the test animals die. "Lethal Dose, 50%"


     
    #5 The Galatian, Oct 6, 2006
  6. El_Guero

    El_Guero New Member

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    Galatian

    Even though it has beeeeeeen a long time

    LD50 means the exposure where 50% are expected to die, based upon experiments . . . the tests were usually not on lab rats . . .

    ;)

    PS at that dosage . . . there are no lucky ones . . .

     
    #6 El_Guero, Oct 6, 2006
  7. The Galatian

    The Galatian New Member

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    That's what I said. And yes, it is generally tested on rats.

    And yes, there are indeed doses at which 99% or higher die, but a few lucky ones survive.
     
    #7 The Galatian, Oct 6, 2006
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