DETERMINATION OF URANIUM ISOTOPE CONCENTRATIONS IN PRECIPITATION IN THE VICINITY OF LIGNITE-FIRED POWER PLANTS

Papadopoulos, NK; Efstathopoulos, AV; Karangelos, DJ; Petropoulos, NP

dc.contributor.author	Papadopoulos, NK	en
dc.contributor.author	Efstathopoulos, AV	en
dc.contributor.author	Karangelos, DJ	en
dc.contributor.author	Petropoulos, NP	en
dc.date.accessioned	2014-03-01T02:04:28Z
dc.date.available	2014-03-01T02:04:28Z
dc.date.issued	2011	en
dc.identifier.issn	1451-3994	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/29435
dc.subject	fly ash	en
dc.subject	uranium	en
dc.subject	precipitation	en
dc.subject	wet deposition	en
dc.subject	alpha spectrometry	en
dc.subject	kinetic phosphorimetry	en
dc.subject	lignite-fired power plants	en
dc.subject.other	NATURAL RADIOACTIVITY	en
dc.subject.other	SAMPLES	en
dc.subject.other	RADIONUCLIDES	en
dc.subject.other	GREECE	en
dc.subject.other	RAINWATER	en
dc.subject.other	FALLOUT	en
dc.subject.other	THORIUM	en
dc.subject.other	WATERS	en
dc.title	DETERMINATION OF URANIUM ISOTOPE CONCENTRATIONS IN PRECIPITATION IN THE VICINITY OF LIGNITE-FIRED POWER PLANTS	en
heal.type	journalArticle	en
heal.language	English	en
heal.publicationDate	2011	en
heal.abstract	Coal- and lignite-fired power plants produce significant amounts of fly ash, which in many cases contains high concentrations of naturally occurring radionuclides such as U-238. This is of importance from the radio-environmental point of view since a small portion of the fly ash escapes from the power plant filtering system and disperses in the surrounding atmosphere. In addition, coal- and lignite-fired plants related activities such as fuel mining and ash deposition contribute to the suspended matter in the air with particles containing naturally occurring radionuclides. In this study, rainwater samples were collected in the Megalopolis lignite field basin of the Arcadia prefecture in Greece, where lignite-fired power plants are in operation and related activities are fully developed. The samples were preconcentrated and analyzed with alpha spectrometry and kinetic phosphorescence analysis in order to determine the levels of uranium isotope concentrations in precipitation in the Megalopolis basin. A control rainwater sample was also collected in the Athens area to account for reference purposes. Concentrations determined via the two techniques were found to be in statistical agreement. The concentration of U-238 in the samples collected at the Megalopolis basin varies from 2.2 +/- 0.6 to 90 +/- 14 mBq/L, and is 5-40 times higher than the concentration of U-238 in the sample collected in Athens. This could be attributed to the operation of the lignite-fired power plants, the fossil fuel mines, and the ash depositories.	en
heal.publisher	VINCA INST NUCLEAR SCI	en
heal.journalName	NUCLEAR TECHNOLOGY & RADIATION PROTECTION	en
dc.identifier.isi	ISI:000290121000001	en
dc.identifier.volume	26	en
dc.identifier.issue	1	en
dc.identifier.spage	1	en
dc.identifier.epage	10	en