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Related Concept Videos

Radioactive Decay and Radiometric Dating02:48

Radioactive Decay and Radiometric Dating

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Radioactivity is a spontaneous disintegration of an unstable nuclide and is a random process, as all the nuclei in the sample do not decay simultaneously. The number of disintegrations per unit time is called the activity (A), which is directly proportional to the number of nuclei in the sample. The decay constant (λ) is an average probability of decay per nucleus in unit time.
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All radioactive nuclides emit high-energy particles or electromagnetic waves. When this radiation encounters living cells, it can cause heating, break chemical bonds, or ionize molecules. The most serious biological damage results when these radioactive emissions fragment or ionize molecules. For example, α and β particles emitted from nuclear decay reactions possess much higher energies than ordinary chemical bond energies. When these particles strike and penetrate matter, they...
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In the early 1900s, English chemist Frederick Soddy realized that an element could have atoms with different masses that were chemically indistinguishable. These different types are called isotopes — atoms of the same element that differ in mass. Isotopes differ in mass because they have different numbers of neutrons but are chemically identical because they have the same number of protons. Soddy was awarded the Nobel Prize in Chemistry in 1921 for this discovery.
An isotope containing...
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Nuclear Power02:36

Nuclear Power

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Controlled nuclear fission reactions are used to generate electricity. Any nuclear reactor that produces power via the fission of uranium or plutonium by bombardment with neutrons has six components: nuclear fuel consisting of fissionable material, a nuclear moderator, a neutron source, control rods, reactor coolant, and a shield and containment system.
Nuclear Fuels
Nuclear fuel consists of a fissile isotope, such as uranium-235, which must be present in sufficient quantity to provide a...
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  11. Radiocaesium In Mosses From The Kopački Rit Nature Park In Croatia: Searching For Undeclared Releases From Nuclear Facilities In War-torn Ukraine.
  1. Home
  3. Research Domains
  5. History, Heritage And Archaeology
  7. Heritage, Archive And Museum Studies
  9. Heritage Collections And Interpretations
  11. Radiocaesium In Mosses From The Kopački Rit Nature Park In Croatia: Searching For Undeclared Releases From Nuclear Facilities In War-torn Ukraine.

Related Experiment Video

Measuring Fluxes of Mineral Nutrients and Toxicants in Plants with Radioactive Tracers
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Radiocaesium in mosses from the Kopački rit Nature Park in Croatia: searching for undeclared releases from nuclear facilities in war-torn Ukraine.

Nora Miljanić1, Branimir Zauner2, Dinko Babić2

  • 1University of Dubrovnik, Department of Electrical Engineering and Computing, Dubrovnik, Croatia.

Arhiv Za Higijenu Rada I Toksikologiju
|July 4, 2024

View abstract on PubMed

Summary
This summary is machine-generated.

Radiocaesium levels in Croatian mosses remain low, unaffected by the Ukraine conflict. Kopački Rit Nature Park is confirmed as a suitable monitoring site for future airborne radioactive pollution detection.

Keywords:
134Cs137Csairborne radioactive pollutionbioindicator

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Area of Science:

  • Environmental Science
  • Radiological Monitoring
  • Ecology

Background:

  • Military operations near Ukrainian nuclear facilities raise concerns about potential radioactive contamination.
  • Mosses serve as effective bioindicators for airborne radioactive pollution.
  • Kopački Rit Nature Park in Croatia is a known area with low background radiocaesium levels.

Purpose of the Study:

  • To assess radiocaesium levels in mosses from Kopački Rit Nature Park.
  • To determine if the conflict in Ukraine has impacted airborne radioactivity in the region.
  • To confirm the suitability of Kopački Rit as a baseline monitoring area.

Main Methods:

  • Moss sampling was conducted in Kopački Rit Nature Park.
  • Analysis of moss samples for radiocaesium concentration.
bioindikatori
radioaktivno onečišćenje zraka
  • Sampling concluded in August 2023.

    • Main Results:

    • No elevated levels of radiocaesium were detected in the analyzed moss samples.
    • The study confirmed the continued low radiocaesium background in Kopački Rit.
    • Findings indicate no significant airborne radioactive pollution from the Ukraine conflict in the study area.

    Conclusions:

    • Kopački Rit Nature Park remains a reliable location for monitoring anthropogenic radioactive pollutants.
    • The environmental integrity of Kopački Rit concerning radiocaesium is maintained.
    • Continued biomonitoring in Kopački Rit is recommended for early detection of future radioactive releases.