Re: WHICH SCIENCE OR SCIENTISTS CAN YOU TRUST?
From: Dirk Bruere at Neopax (dirk_at_neopax.com)
Date: 03/04/05
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Date: Fri, 04 Mar 2005 18:14:43 +0000
farooq_w@hotmail.com wrote:
> Dirk Bruere at Neopax wrote:
>
>
>>>>>>>Uranium exists in topsoil to the extent of about 10 tonnes per
>
> sq km.
>
>>>>>>
>>>>>>It does ? ... where ?
>>>>>
>>>>>
>>>>>Pretty much everywhere.
>>>>
>>>>
>>>>
>>>>Gosh. Over what depth in that sq km are you talking here ?
>>>
>>>
>>>Top one metre.
>>
>>IIRC it's about 2ppm of soil, and I think it was per sq mile, not sq
>
> km so it's
>
>>a bit less than I said above.
>>
>>Bricks are 8ppm, and plasterboard 13ppm of Uranium, if >that's of any
>
> use.
>
> Where are you quoting these values from? 2mg U/kg soil is a large unit
> for analytical chemists. This means common topsoil should test positive
> for uranium. The upper limit set for the metal by EPA is 30 parts per
> billion in drinking water. If top soil is 2ppm = 2000ppb U, we would
> all die slowly from it.
>
http://www.cartage.org.lb/en/themes/Sciences/Chemistry/NuclearChemistry/Transuranium/Uranium.htm
http://tinyurl.com/66qfu
"One isotope of thorium, Th-232, has a half - life of 14 billion years and has
an abundance of 12 parts per million in the Earth's crust. It is a principal
constituent of some minerals, notably thorite and monazite (a mixed rare-earth
and thorium phosphate). Three isotopes of uranium are found in nature. Their
isotopic abundances and half-lives are U-234, 0.006%, 230,000 years; U-235,
0.72%, 696 million years; and U-238, 99.27%, 4.51 billion years. Some laboratory
produced isotopes of uranium also have long halflives. The overall abundance of
uranium in the Earth's crust is about 4 parts per million,"
-- Dirk The Consensus:- The political party for the new millenium http://www.theconsensus.org
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