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226Ra in trickling waters from the vicinity of a phosphogypsum deposition site (CROSBI ID 626283)

Prilog sa skupa u zborniku | izvorni znanstveni rad | domaća recenzija

Bituh, Tomislav ; Marović Gordana 226Ra in trickling waters from the vicinity of a phosphogypsum deposition site // Zbornik radova 10. simpozija HRVATSKOG DRUŠTVA ZA ZAŠTITU OD ZRAČENJA / Petrinec, Branko ; Bituh, Tomislav ; Milić, Mirta et al. (ur.). Zagreb: Hrvatsko društvo za zaštitu od zračenja, 2015. str. 258-262

Podaci o odgovornosti

Bituh, Tomislav ; Marović Gordana

engleski

226Ra in trickling waters from the vicinity of a phosphogypsum deposition site

Phosphate rock is a raw material used during the production of phosphate fertilizers. As a waste by-product, phosphogypsum is characterized by technically enhanced natural radioactivity (NORM). During the production of phosphate fertilizers, most of the natural 238 U from the phosphate ore ends up in the final products, while 80 % of 226 Ra is incorporated into phosphogypsum (CaSO 4 · 2H 2 O). The phosphogypsum from one Croatian phosphate fertilizer factory is deposited at a local site situated at the borderline of Lonjsko Polje Nature Park, which implies that the constant monitoring of the deposition site environment is necessary. In this investigation, the activity concentration of 226 Ra in trickling water samples from the surroundings of the mentioned deposition site was measured. The samples were collected by piezometers and after radiochemical separation of 226 Ra measured with an alpha spectrometer. Activity concentrations of 226 Ra in trickling water were within the range from 8 ± 4 Bq/m 3 to 34 ± 9 Bq/m 3 so we can conclude that layers of clay underneath the pile serve as good isolation. In addition, long-term systematic investigations showed a significant decrease in 226 Ra activity concentrations in the trickling water. However, constant monitoring is necessary to detect possible future changes in the radioactivity levels in the environment.

226Ra; phosphogypsum; water; radioactivity; NORM

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Podaci o prilogu

258-262.

2015.

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objavljeno

Podaci o matičnoj publikaciji

Zbornik radova 10. simpozija HRVATSKOG DRUŠTVA ZA ZAŠTITU OD ZRAČENJA

Petrinec, Branko ; Bituh, Tomislav ; Milić, Mirta ; Kopjar, Nevenka

Zagreb: Hrvatsko društvo za zaštitu od zračenja

1849-5060

Podaci o skupu

10. simpozij HRVATSKOG DRUŠTVA ZA ZAŠTITU OD ZRAČENJA

poster

15.04.2015-17.04.2015

Šibenik, Hrvatska

Povezanost rada

Javno zdravstvo i zdravstvena zaštita