Very smart of you to test these ashes...
...and you should test your air filters as well!
Ashing will allow for a higher detection rate as the moisture in living cells block or shield many of the radioactive materials contained in the cells from the counter. This is particularly true with Alpha emitters (plutonium and americium). Ashing is a popular way to test foods in the lab for radiation as the detection rates are much higher without the moisture normally present in the whole food or substance.
And when using Gamma Spectroscopy ashing makes it more accurate when trying to detect individual isotopes.
The thing to do is save some (1/4 cup or so) of the ashes and find someone setup to test for CS 137, CS 134 (the nasty one) and I 131 (the really nasty one) or any of the daughter isotopes from these substances. If you have the history of the wood (did you cut it yourself) you will be able to clearly see the contamination for the area and may even be able to know where and when it originated.
The count is high but without knowing what is causing it you really don't know if you have a problem. Some of these counts are undoubtedly natural potassium and concentrated fallout from bomb testing / old accidents and such.
YOU DON'T want to be breathing or swallowing these ashes or any dust from your air filters period!
For a start I'd try to contact someone like Tom over at
http://anti-proton.comhttps://www.youtube.com/user/antiprotons/discussionhttps://www.youtube.com/user/antiprotonsMaybe he will be willing to test a small sample for you and tell us all what is causing these reads...
...at the very least if you watch his videos on Gama Spec. you will gain a better understanding of this process.
And don't play around with ashes, vacuum bags, air filters, water filters or anything you even suspect to be contaminated without using proper safety precautions.
Let me know what happens...
Stay safe, don't panic, eyes open...
Islander wrote:
I removed cold ashes that had been building up since I started burning in October, from my Canadian made Blaze King. I put them in a 5 gal. bucket, then got the idea to use my Inspector GC , I held it above the ashes about 1 inch, and I watched the CPM count climb up and up to 230 CPM, and I was ready to Dump them on my fruit trees, what a mistake that would have been. I think I"ll take them to the local fire department and they can dispose of the Radioactive waste. The wood I burned was Oak and Myrtle, just 1 cord . Be careful of your ashes !