4/26/2011 -- Radiation Test -- PLANT MATERIAL -- Saint Louis, Missouri -- 54.1 CPM

This measurement was made on April 26th, 2011 at approx. 645pm CST. It indicates "normal" or "acceptable" radiation levels. Alert level is considered anything over 100CPM by the radiation network ...

http://www.radiationnetwork.com


First background measurement, taken over the course of 10 minutes was 38.4 CPM. Second Background measurement over the course of 10 minutes was 41.6 CPM.

The third OFFICIAL CPM, for this plant material, after measuring background, came to 54.1 CPM.




*************

statistics:

Total 10 minute count = 541= 54.1 CPM

Location: Saint Louis, Missouri

Coordinates : 38 36 6 N , 90 15 50 W

Elevation : 527 feet

Measurement taken: 4 ten mintue long CPM measurements using the "inspector alert" nuclear radiation monitor (geiger counter)

from the inspector alert geiger counter manual:

"CPM (or CPS) and total counts are the most direct methods of measurement; mR/hr (or uSv/hr) is calculated using a conversion factor optimized for Cesium-137, so this mode is less accurate for other radionuclides, unless you have calibrated the "geiger counter" for a specific radionuclide using an appropriate source. It is more appropriate to measure alpha and beta activity using CPM than using mR/hr. Conversion for alpha and beta emitters is calcuated differently, and the "geiger counters" reading in mR/hr may not be accurate."

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[dutchsinse]

@jljaries tomorrow is the trip to the store on camera.. milk, butter, lettuce, and farmers market downtown.

cheers !

[dutchsinse]

@MrStonley ... yes!!! anyone from canada with a geiger.. do these tests.. try to make it as foolproof as possible .. listen to the viewers suggestions.. most are spot on...

by the time i actually hit the road next week.. all the bugs should be out hopefully and I can have a set method established.

EPA was driving around with samplers attached to cars.. and fixed stations that didn't work..

the way i look at it, at least Im recording the methods.. EPA recording theirs? nope!

[jangoede]

@sharonripps Instead of blaming someone for the things they do wrong, you can also give them advice on how to do it better? Omg your so amteur.. :S

[sharonripps]

My goodness, how amateur. The detector is testing plant material on a bench OVER CONCRETE. Would someone teach this young fellah that concrete has URANIUM in it! False readings... what a shame that this valuable instrument is in the hands of someone who does not know radiation.

[GoddardsJournal]

Do you have any data for a pre-Fuku baseline level for plants?

[hwdridge]

I have been checking radiation levels near eugene,or. sinse march 12th,2011.very high week of march 23rd ....back to normal now!

[MucusFelidae]

@Romenadan "alphas...cannot penetrate skin"

This is not true. At least it is a very misleading statement and there is no proof of validity, only rerpeated parroting of that false information.  Alphas readily penetrate skin, because skin is not a homogenous layer and alphas from Thorium are very energetic, for example.

Better not listen to people who do not know what they are talking.

[kiararei]

happy and safe travels for next week dutch. please take care. even though i'm in australia i find it incredibly interesting what you are doing and if you ever swing by this way you and your lovely wife are welcome on my doorstep. bless

[euclon]

Put the bag into another bag and then take it out and recount it 24hrs later.... :)

[firewoven]

what is cpm compared to 1 becquerel or what ever is equal to 1 chest xray? and then there is that other measurement also Sievert. is the International System of Units (SI).

[gaiainoakpark]

If you need any help with study design - things to think about in order to deliver cleanest data - let me know, I have training/education/exper. needed for such.

[gaiainoakpark]

I don't know if makes any difference - might want to purchase a portable stand - say pvc something without natural radiation and use for all measurements so you have a consistant "background" radiation source. Just like the reading you did on a rock, a chemical treated wood structure is not best (treated with copper salts or other metal based preservatives. From research perspective - you want to eliminate/control as many variables as you can - like you said - learn as you go :)