Napredna pretraga

Pregled bibliografske jedinice broj: 699475

Distribution of Ra-226 in the surface soil in the vicinity of the thermal power plant Plomin (Croatia)


Ernečić, Gorana; Lovrenčić Mikelić, Ivanka; Medunić, Gordana
Distribution of Ra-226 in the surface soil in the vicinity of the thermal power plant Plomin (Croatia) // Acta Mineralogica-Petrographica, Abstract Series / Pál-Molnár, Elemér (ur.).
Szeged, Hungary: Department of Mineralogy, Geochemistry and Petrology, University of Szeged, 2014. str. 28-28 (predavanje, međunarodna recenzija, sažetak, znanstveni)


Naslov
Distribution of Ra-226 in the surface soil in the vicinity of the thermal power plant Plomin (Croatia)

Autori
Ernečić, Gorana ; Lovrenčić Mikelić, Ivanka ; Medunić, Gordana

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Acta Mineralogica-Petrographica, Abstract Series / Pál-Molnár, Elemér - Szeged, Hungary : Department of Mineralogy, Geochemistry and Petrology, University of Szeged, 2014, 28-28

Skup
5th International Students Geological Conference

Mjesto i datum
Budimpešta, Mađarska, 24.-27.4.2014

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Ra-226; soil; Plomin; coal combustion

Sažetak
Purpose of this study was to determine the long term influence of the thermal power plant (TPP) Plomin in Istria peninsula (Croatia) on the possible contamination of the surrounding soil by the radionuclides from the emitted coal ash. Coal naturally contains radionuclides of the U-238 and Th-232 decay series, as well as K-40, which concentrate in ash due to coal combustion, several times more in comparison with their content in coal or surface soil. This preliminary study will focus only on the Ra-226 which is, along with its decay products, responsible for the largest part of the dose received by humans from the naturally occurring radionuclides. Ra-226 is an alpha emitter with a half-life of 1622 years. It has similar chemical characteristics to calcium which can lead to calcium replacement in bones if it enters in an organism and is therefore harmful for people. Furthermore, Ra-226 decays to Rn-222, with a halflife of 3.8 days, which is a noble gas and can easily be inhaled into the human organism, known for causing lung cancer. The main assumption of this research was that radionuclides could be dispersed into the environment from the plant stack and from the ash piles next to the TPP due to the rainfall and the wind flow. Considering that Ra-226 is a terrestrial radionuclide, present in all rocks and soils in variable amounts, the main purpose was to evaluate if the natural radioactivity of the area was elevated due to influence of the flying ash and/or bottom ash produced by the coal combustion. The results were compared with the control sample and with the average soil value.

Izvorni jezik
Engleski

Znanstvena područja
Geologija



POVEZANOST RADA


Projekt / tema
098-0982934-2713 - Radionuklidi i elementi u tragovima u okolišnim sustavima (Delko Barišić, )

Ustanove
Institut "Ruđer Bošković", Zagreb,
Prirodoslovno-matematički fakultet, Zagreb