Contamination with Cs-173 in the Czech Republic

Share your spectra and discuss their features here
Post Reply
User avatar
Milos
Posts: 5
Joined: 28 Jul 2019, 19:17
Contact:

Contamination with Cs-173 in the Czech Republic

Post by Milos » 03 Aug 2019, 07:21

Hello,

Our country is one of many European countries, which were hit by radioactive cloud after NPP Chernobyl accident. I was curious about residual contamination of our environment, so I decided to try to measure Cs-137 in mushrooms picked in our district, where I expected some chance to see tiny signal of Cs-137 due to ability of mushrooms to cumulate this kind of contamination. So it was not much surprising to see Cs-137 photopeak in a collected spectrum.

Image
Story behind this experiment

What is more disturbing is the fact, that even higher signal of Cs-137 I measured in one of two samples of soil which I taken about 14 days ago at the place where we live.

Image
Story behind this experiment

Results of my experiments are in good agreement with the results of our National Radiation Protection Institute. It is good to realize, that only one half-life of Cs-137 has passed, so nearly half of the contamination is still somewhere in the environment, mostly in upper layer of a soil. Only thing which keeps me calm is the fact, that radiation contribution of Cs-137 is still lower than of K-40 as can be clearly seen from the spectrum.
Milos Hroch
Hradec Kralove, Czech Republic

Equipment: Scintillix gama spectrometer
Probe: 63x63 mm NaI(Tl), FWHM 6.9% @ 622 keV
Website: www.scintillix.com, www.foto.astronomie.cz

User avatar
Steven Sesselmann
Posts: 626
Joined: 27 Apr 2015, 11:40
Location: Sydney
Contact:

Re: Contamination with Cs-173 in the Czech Republic

Post by Steven Sesselmann » 03 Aug 2019, 09:41

Milos,

Thanks for sharing.

It sure looks like mushrooms do a good job of mopping up contaminated ground, maybe you can commercialise it :)

Steven
Steven Sesselmann | Sydney | Australia | gammaspectacular.com | groundpotential.org | rephopper.com | beejewel.com.au |

User avatar
Milos
Posts: 5
Joined: 28 Jul 2019, 19:17
Contact:

Re: Contamination with Cs-173 in the Czech Republic

Post by Milos » 03 Aug 2019, 17:14

Hello Steven,

You are joking :), but there are real projects dealing with some plants, which have higher ability to accumulate cesium in their bodies. Problem is, where to deposit such an amount of contaminated biomass and time span for effective decontamination. Some information can be found here:

J Environ Qual. 2003 Nov-Dec;32(6):2272-9.
Uptake and release of cesium-137 by five plant species as influenced by soil amendments in field experiments.
Fuhrmann M1, Lasat M, Ebbs S, Cornish J, Kochian L.
https://www.ncbi.nlm.nih.gov/pubmed/14674551

Another problem is, that e.g. Amaranthus retroflexus used for this purpose is stubborn weed.
Milos Hroch
Hradec Kralove, Czech Republic

Equipment: Scintillix gama spectrometer
Probe: 63x63 mm NaI(Tl), FWHM 6.9% @ 622 keV
Website: www.scintillix.com, www.foto.astronomie.cz

Post Reply

Who is online

Users browsing this forum: Google [Bot] and 0 guests