31 times as much Iodine-129 than I-131 from Fukushima.

A recent article published in the Geochemical Journal (available here) by Miyake et al. has found that there was 31.6 times as much iodine-129 than iodine-131 released in the early days of the Fukushima catastrophe. Iodine-129 is a long-lived radionuclide with a half-life of 15.7 million years. So it doesn’t go away.

The EPA document “Health Risks from Low-Level Environmental Exposure to Radionuclides” (available here) indicates the mortality risk for I-129 is about 3 times that of I-131. This is mainly from thyroid cancer. European nuclear reprocessing plants (mainly La Hague) release a huge amount of I-129 – they released around 1,800 times as much of it as Chernobyl did (up to the year 2000). Gee, I wonder why there is a worldwide epidemic of thyroid cancer.

13 thoughts on “31 times as much Iodine-129 than I-131 from Fukushima.

    • I suffer from MS and you would never know it to look at me as I have few symptoms that are visible. Anyway if you have any questions let me know.

      • Thanks, Michelle. I don’t think I have MS (I hope not) but the autoimmune symptoms have been mimicking MS for the last 3 months. This is likely due to large amounts of heavy metals in the environment, which I have an unusual sensitivity to.

        That they are radioactive heavy metals like uranium & plutonium is probably not even much of a factor yet for me. It’s the chemical properties of them.

  1. Bobby1, I’m so sorry that you are in pain. Thank you for working on this despite it.

    Melbourne, Florida will have how much Iodine-129 for millions of years?

    If there was a minimum of 40,000,000 Bq of iodine-131 in Southern Californian kelp,
    then there is at least 1,240,000,000 Bq of iodine-129?

    • Thanks, NoNukes. More than that… if it took 8 days for the iodine-131 to get to southern California, half of it would have decayed by then. That means there would be 62 times as much I-129 (since virtually none of it would have decayed), or 2,480,000,000 Bq.

  2. Great post Bobby1

    I will follow up on that citation.

    I think we may be getting some more iodine-131 soon…

    The Tepco webcam looked terrible today–alarming. I don’t know where the cam is now situated but something looked like it was burning badly.

    Potrblog is detecting higher radiation again.

    They say their theory is that there is naturally radon-infused water under Fukushima and that the burning coriums are vaporizing the water, which would explain the fast decay of most (but not all) of the radiation in their samples.

    I know that radon occurs naturally in rain but the levels they detect seem to vary far too much for their to be a natural pattern…

    • The fast decay on the samples from a wet paper towel may be due to evaporation of dissolved iodine and krypton gas… I am not sure how much we can infer from this. The real half-life would be greater than what is observed with Geiger readings.

      Certainly, with all the uranium Busby found, we are having higher radon levels too, because radon comes from the decay of uranium. Radon kills 20,000 in the US every year (pre-Fuku).

  3. Iodine-129 in seawater offshore fukushima: distribution, inorganic speciation, sources, and budget.

    The Fukushima nuclear accident in March 2011 has released a large amount of radioactive pollutants to the environment. Of the pollutants, iodine-129 is a long-lived radionuclide and will remain in the environment for millions of years. This work first report levels and inorganic speciation of (129)I in seawater depth profiles collected offshore Fukushima in June 2011. Significantly elevated (129)I concentrations in surface water were observed with the highest (129)I/(127)I atomic ratio of 2.2 × 10(-9) in the surface seawater 40 km offshore Fukushima. Iodide was found as the dominant species of (129)I, while stable (127)I was mainly in iodate form, reflecting the fact that the major source of (129)I is the direct liquid discharges from the Fukushima NPP. The amount of (129)I directly discharged from the Fukushima Dai-ichi nuclear power plant to the sea was estimated to be 2.35 GBq, and about 1.09 GBq of (129)I released to the atmosphere from the accident was deposited in the sea offshore Fukushima. A total release of 8.06 GBq (or 1.2 kg) of (129)I from the Fukushima accident was estimated.


  4. Fukushima update – North American food supply poisoned along Pacific Coast

    (NaturalNews) If you live on the West Coast of the U.S. or Canada, you may want to reconsider your water filtration method as well as how you select and prepare food. Evidently, the nightmare of Fukushima is far from over – another 16 million years to be exact. Due to the astonishingly long half-life of iodine-129, the whole ecosystem of the Pacific Coast will be contaminated pretty much forever.

    Lifespan of radioactive isotopes and other trivia

    Among other dangerous radioactive isotopes released from the Fukushima meltdown, iodine-129 also spewed forth from the damaged reactor. Incredibly, this isotope has a half-life of 16 million years. Essentially, the entire West Coast food supply of North America will be contaminated with radiation for unlimited generations. We have fundamentally entered into a new way of life – one that takes a giant leap toward illness, disease and heightened mortality rates.


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