"Since then there have been added at least 1,000 Bq/m^3 of man-made Potassium-40 which is not part of natural potassium"
has been quoted several times at ENE, with the implication that man has added 1000 Bq/M3 to the ocean.
PT had stated 11,000Bq/M3 from a 1971 source. And then later I calculated 11,800 or round to 12,000
So out of that became the "1000 bq/m3 of man-made Potassium-40" added
Let's trace the original information
Going to the source document (which is embedded in this post at the far bottom)
From the source document, they use an unusual convention dpm/minute. K40 decays 90% as a beta, 10% as a gamma. And Geiger counters are not of perfect efficiency, i.e. they don't catch every disintegration. Wait for the punchline, but review this first.
NukePro Calcs below and shown originally on this post
http://nukeprofessional.blogspot.com/2015/08/lies-of-nuclear-nuke-propaganda.html
By knowing the "Specific Activity" of K-40 it is then simple to calculate the Bq/Liter, or Bq/M3
Specific Activity | 265400 | Bq/g |
Which is used in my calculation, its one of the blue shaded values above.
So rather than using the scientific specific activity, they used a field measured dpm, and that is the error. So if their Geiger was 93% efficient, then the 670 dpm, you would add 7% to bring the low efficiency measurement up to the real Bq/min or 717 and then divide that by 60 seconds to arrive at 11.94 Bq/L, and then convert that to M3
11, 940 Bq/M3 Now that is More Like Reality
So all this misunderstanding and "creation of human generated K-40" was simply due to a non perfect Geiger Counter, and an author who choose to round down to 11,000 even.
Sheesh!
Source Document
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