dc.contributor.author | Ioannidou, Alexandra | en |
dc.contributor.author | Samaropoulos, I. | en |
dc.contributor.author | Efstathiou, Maria | en |
dc.contributor.author | Pashalidis, Ioannis | en |
dc.creator | Ioannidou, Alexandra | en |
dc.creator | Samaropoulos, I. | en |
dc.creator | Efstathiou, Maria | en |
dc.creator | Pashalidis, Ioannis | en |
dc.date.accessioned | 2019-11-21T06:19:23Z | |
dc.date.available | 2019-11-21T06:19:23Z | |
dc.date.issued | 2011 | |
dc.identifier.uri | http://gnosis.library.ucy.ac.cy/handle/7/55554 | |
dc.description.abstract | The activity concentrations of 238U and 234U have been determined in groundwater samples of hot springs and deep wells in Northern Greece. The analysis was performed by alpha spectroscopy after pre-concentration and separation of uranium by cation exchange (Chelex 100 resin) and finally its electro-deposition on stainless steel discs. The uranium concentration in deep wells and springs varies strongly between 0.15 and 7.66 μg L-1 and the corresponding 238U and 234U activity concentrations between 1.82-95.3 and 1.70-160.1 mBq L-1, respectively. The obtained isotopic ratio 234U/238U varies between 0.95 and 1.74 indicating a disturbed radioactive equilibrium between the two uranium isotopes. In the studied waters uranium concentrations in solution decrease with increasing pH in the pH range between 7 and 9. This is attributed to the fact that at lower pH dissolution of soil minerals occurs and uranium which is adsorbed or forms solid solution with the geological matrix enters the aqueous phase. The strong dependence of the uranium concentration in the studied waters from the dissolution of the geological matrix is corroborated by the strong correlation of the uranium concentration with the electrical conductivity measured in the ground waters under investigation. © 2011 Akadémiai Kiadó, Budapest, Hungary. | en |
dc.source | Journal of Radioanalytical and Nuclear Chemistry | en |
dc.source.uri | https://www.scopus.com/inward/record.uri?eid=2-s2.0-79961209248&doi=10.1007%2fs10967-011-1115-x&partnerID=40&md5=dfa3c152d3b0cb6e37924233f19a4ec8 | |
dc.subject | Greece | en |
dc.subject | article | en |
dc.subject | controlled study | en |
dc.subject | electric conductivity | en |
dc.subject | concentration (parameters) | en |
dc.subject | aqueous solution | en |
dc.subject | spectroscopy | en |
dc.subject | pH | en |
dc.subject | solid | en |
dc.subject | Uranium | en |
dc.subject | pH effects | en |
dc.subject | water sampling | en |
dc.subject | adsorption | en |
dc.subject | dissolution | en |
dc.subject | ground water | en |
dc.subject | mineral | en |
dc.subject | Waters | en |
dc.subject | 234U/ 238U activity ratio | en |
dc.subject | Alpha spectroscopy | en |
dc.subject | cation exchange | en |
dc.subject | deep well | en |
dc.subject | geographic and geological phenomena | en |
dc.subject | natural radioactivity | en |
dc.subject | stainless steel | en |
dc.subject | thermal spring | en |
dc.subject | uranium 234 | en |
dc.subject | uranium 238 | en |
dc.title | Uranium in ground water samples of Northern Greece | en |
dc.type | info:eu-repo/semantics/article | |
dc.identifier.doi | 10.1007/s10967-011-1115-x | |
dc.description.volume | 289 | |
dc.description.issue | 2 | |
dc.description.startingpage | 551 | |
dc.description.endingpage | 555 | |
dc.author.faculty | 002 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences | |
dc.author.department | Τμήμα Χημείας / Department of Chemistry | |
dc.type.uhtype | Article | en |
dc.description.notes | <p>Cited By :18</p> | en |
dc.source.abbreviation | J.Radioanal.Nucl.Chem. | en |
dc.contributor.orcid | Pashalidis, Ioannis [0000-0002-7587-6395] | |
dc.gnosis.orcid | 0000-0002-7587-6395 | |