Pacific salmon results and Potassium 40--question

Submitted by Anonymous on Wed, 2011-10-12 01:19

The Pacific wild salmon we had tested by a lab in Canada came back with the following results:
Cs 134: <0.001 Bq/g (MDA)
Cs 137: <0.002 Bq/g (MDA)
I-131: <0.004 Bq/g (MDA)
Gross alpha: <0.08 Bq/g (MDA)
Gross beta: 0.14 Bq/g
Potassium-40: 0.23Bq/g

Cs and I results are encouraging. But I am wondering about the (naturally occurring) Potassium-40 (both beta and gamma emitter). Does anyone here know if 230Bq/kg is a normal/ average concentration of Potassium 40 in wild Pacific salmon?

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Thank you for sharing. The

Submitted by BC (not verified) on Wed, 2011-10-12 07:01.

Thank you for sharing.

The K-40 is natural, no concern there. I am sure that not every species of salmon has the same amount of potassium in it....

The MDAs are a little high, but nonetheless, good to see!

Apparently, for each gram of

Submitted by Anonymous (not verified) on Wed, 2011-10-12 03:17.

Apparently, for each gram of potassium, there are 32 Bq of K-40 according to this: http://rerowland.com/K40.html

Supposedly Salmon has around 5 grams of potassium per kilo, so it should be closer to 160 Bq than 230. http://nutritiondata.self.com/facts/finfish-and-shellfish-products/4102/2

Thanks very much for digging

Submitted by Anonymous (not verified) on Thu, 2011-10-13 00:04.

Thanks very much for digging up this info! I wonder what the reason for the higher K-40 levels are... (this was Pacific rather than Atlantic salmon)...