Isotopes spike in 4/7 rainwater

Submitted by Anonymous on Sun, 2011-04-10 17:38

Hello BRAWM team,

Have you formed a hypothesis for the spike of the short-lived isotopes in last collected rain? (I-312 to 1.64Bq/L and Te-132 to 0.4Bq/L)

Thank you for all your work!

‹ Radiation level at Ohio site? why the CS-137 is still so high in the rain water ›

So...

Submitted by R. Cromack (not verified) on Mon, 2011-04-11 08:20.

...Levels are decreasing steadily and nearing consistent MDA in the AIR...

...But cesium is really sticking around in the rainwater.

Could the cesium you're measuring in the rainwater be "legacy"? ...I mean, could this "sticky" isotope have remained, adhering to, say, the interior surface of the rainwater collection device, since the initial spikes? Or, is it assured that this is a completely "fresh" sampling?

All this is making my head spin. Is it getting better? Is it going to stay really, really bad for a really long time? NO solid answers seem to be on the horizon.

Rick Cromack.
Allen, Texas
RichardFCromackJr@gmail.com
972-746-8575

Thank you very much Daniel,

Submitted by Anonymous (not verified) on Sun, 2011-04-10 19:09.

Thank you very much Daniel, and apologies for 'jumping' with the question right away. We do know the results are only preliminary, I was just curious, that's all.

It looks like they are just

Submitted by Anonymous (not verified) on Sun, 2011-04-10 18:23.

It looks like they are just off by one column. If you shift everything over one slot to the left, the numbers sync a lot better. Also, I agree that these are pretty preliminary - wait until they comment on and input them (they are missing the dose equiv).

That makes sense, thanks -

Submitted by Anonymous (not verified) on Sun, 2011-04-10 19:03.

That makes sense, thanks - you are absolutely right, I didn't notice there aren't any comments yet.

Shift values one cell to the left

Submitted by Anonymous (not verified) on Sun, 2011-04-10 18:51.

Unfortunately that means I-131 levels have actually increased since the past rainfall, and that Caesium levels have not decreased by very much.

What are we going to eat, y'all?

I-132 @ 1.64 Bq/L in Rainwater?

Submitted by Anonymous (not verified) on Sun, 2011-04-10 18:04.

I pray that is a typo.

I-132 has a half life of 2.295 hours.

If this is true, how the heck did it get here in measurable quantities?

Isotopes spike in 4/7 rainwater

Submitted by Anonymous (not verified) on Sun, 2011-04-10 17:58.

Yes. That is interesting. I'm wondering about the accuracy/completeness of those numbers, given the absence of the usual # of the liter consumption data.

I'm also curious about the 20.1 Bq/L count for I-131 on 3/23. That one day is significantly higher than all the other days. And 240% of the closest high of 8.35 Bq/L on 3/21-3/22 (140% increase). Did someone forget to divide by the number of liters sampled? :-)