I think this is incorrect.

I think it is 3.8 grams total retained in the body.

Dan



Silver Smith wrote:
  Thanks for the input.  So is the following summary accurate?

For Pure water (DH2O)            1ml (cc) of  DH20 = 1g of mass

ppm = parts per million usually stated as unit mass/unit mass

Since pure water is 1g:1ml we can state CS/EIS as a concentration of mass/unit volume

For 10 ppm CS/EIS 1ml DH2O has 1 ug of Silver in it or 10mg silver per liter. For 20 ppm CS/EIS 1ml DH2O has 2 ug of Silver in it or 20mg silver per liter.
There are 1000ug in a mg and 1000mg in a gram

Therefore, if it estimated that it would take 3800mg of silver/day to cause argyria you would have to drink:

380,000 ml or 12,667 ounces or 99 gallons of 10ppm CS/EIS to risk it.  OR

190,000 ml or 6,334 ounces or 49.5 gallons of 20ppm CS/EIS to risk it.



On 5/23/07, *Silver Smith* <cag....@gmail.com <mailto:cag....@gmail.com>> wrote:

    I was reading some info on Argyria and came across the following
    statement, "The amount of silver required to develop Argyria is
estimated to be 3.8 grams per day"
    I have two questions about that statement.

    1.  If you are drinking a 10ppm "concentration" of CS/EIS, how many
    ounces or milliliters (ml)  of the 10ppm CS/EIS would you have to
    drink to reach the 3.8 grams for a day.

    2. How many days would you need to drink it to "get it" (argyria)?

    I need a bit of help fully understanding what we mean in terms of
    concentration when we use ppm as the "unit of concentration". I
understand that ppm = parts per million. I assume that would be "parts of silver" per some unit of volume (water)? In the clinical
    lab we measure concentration of analytes in the blood in mg/dl or
    ug/dl......etc.  So would ppm be microgram (ug-1millionth of a gram)
    per some volume of water?  What would the volume of water be?

    Thanks,

    SS




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