An assessment of the external radiological impact in areas of Greece with elevated natural radioactivity

Florou, H.; Trabidou, G.; Nicolaou, G.

doi:10.1016/j.jenvrad.2006.11.009

Cited by 35 publications

(14 citation statements)

References 12 publications

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“…These values are in the same level as those reported in the eastern Mediterranean (e.g. 0.1 -1.6 Bq m 23 in the Aegean Sea (25) , 1.4-1.8 Bq m 23 in the North Mediterranean (26) ). Radium isotopes have been used to study the water mass pathways or to provide information on horizontal and vertical ocean mixing (i) on a large-scale using 226 Ra (27 -34) and (ii) at the mesoscale using the 232 Th-series radionuclide 228 Ra (11, 35 -42) .…”

Section: Resultssupporting

confidence: 88%

“…This is an evidence of the evaporation of seawater during summer stratification resulting in dense surface waters that gradually sink to the bottom breaking down the thermocline layer (50) . The present values are up to one order of magnitude larger than those reported in the eastern Mediterranean region (25) . Figure 3).…”

Section: Resultscontrasting

confidence: 77%

“…Regarding previous measurements of 40 K in the Mediterranean, they are of similar levels, e.g. 12 000-13 000 Bq m 23 in the Aegean Sea (20) , 12 230+120 Bq m 23 in the Saronikos Gulf (57) , 910-9200 Bq m 23 in the southern Ionian Sea (48) and 6000 -13 000 Bq m 23 in central Greece (25) . The respective ratios of 232 Th and 238 U activity concentrations ( Figure 4a) were calculated for all samples in order to assess if anthropogenic activities are present in the area.…”

Section: K Estimated By Salinity and Densitysupporting

confidence: 68%

“…However, 228 Ra has been found to increase in areas of elevated natural radioactivity of the eastern Mediterranean (e.g. 100-1100 Bq m 23 (25,52,53) ). It has been previously mentioned that Ra isotopes can be used to trace processes related to SGDs.…”

Section: Resultsmentioning

confidence: 99%

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Distribution of low-level natural radioactivity in a populated marine region of the easternMediterranean Sea

Evangeliou

Florou

Kritidis

2012

Radiation Protection Dosimetry

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The levels of natural radioactivity have been evaluated in the water column of an eastern Mediterranean region (Saronikos Gulf ), with respect to the relevant environmental parameters. A novel methodology was used for the determination of natural radionuclides, which substitutes the time-consuming radiochemical analysis, based on an in situ sample preconcentration using ion-selective manganese fibres placed on pumping systems. With regard to the results obtained,

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Section: Resultssupporting

confidence: 88%

Section: Resultscontrasting

confidence: 77%

Section: K Estimated By Salinity and Densitysupporting

confidence: 68%

Section: Resultsmentioning

confidence: 99%

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Distribution of low-level natural radioactivity in a populated marine region of the easternMediterranean Sea

Evangeliou

Florou

Kritidis

2012

Radiation Protection Dosimetry

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“…Soil from waste dump sites may contain naturally occurring radionuclides in significant amounts and the resulting external radiation exposure pathway to the population has been subjects for study [7]. Many studies worldwide have measured the activity concentration of natural radionuclides in soil to ascertain the levels of contamination [3,[5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21][22][23].…”

Section: Introductionmentioning

confidence: 99%

Natural Radioactivity Levels and Estimation of Radiation Exposure in Environmental Soil Samples from Tulkarem Province-Palestine

Thabayneh¹,

Jazzar²

2012

OJSS

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The activity concentrations of the natural radionuclides namely 238 U, 232 Th, 40 K and 137 Cs are measured for soil samples collected from different locations of Tulkarem district in West Back-Palestine. High-resolution gamma spectrometry (HPGe detector) was used to determine the activity concentration of these radionuclides in 72 surface soil samples taken from areas in and surrounding Tulkarem city. The concentration of 238 U varied in the range 9.7 -83. . The results have been compared with those of different countries of the world and Palestine. To assess the radiological hazard of the natural radioactivity, the absorbed dose rate (D r ), the radium equivalent activity (Ra eq ), the effective dose rate (E eff ), the annual effective dose equivalent (AEDE), Excess Lifetime Cancer Risk (ELCR), the radioactivity level index (I γ ), and the external (H ex ) and internal (H in ) hazard indices were calculated. It can be concluded that no risk may threat the residents around and center of Tulkarem city except some areas which activity due to fallout 137 Cs were high concentration levels. Hence the probability of occurrence of any of the health effects of radiation is low. Hence, measurements have been taken as representing baseline values of these radionuclides in the soil in studying area.

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Radiological and hydrochemical study of thermal and fresh groundwater samples of northern Euboea and Sperchios areas, Greece: insights into groundwater natural radioactivity and geology

Kanellopoulos

Mitropoulos

Argyraki

2018

Environ Monit Assess

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A radiological and hydrochemical study has been conducted on thermal and fresh groundwater samples of northern Euboea Island and eastern central Greece. Both areas are characterized by complex geology and are renowned since antiquity for their hot springs, that are exploited for therapeutic spa purposes until today. The aim of the study was to combine radiological and hydrochemical data in order to achieve a holistic water quality assessment with insights into the geology of the study areas. All samples were characterized with respect to their major and trace ion and element composition, as well as activity concentrations of Rn,Ra, Ra,Th, and K. The samples demonstrated elevated natural radioactivity and U concentrations, especially in some locations of the Kamena Vourla area, reaching 179 Bq/LRn, 2.2 Bq/L Ra, 2.9 Bq/LRa, and 17 μg/L U. The estimated circulation depth of thermal groundwater ranges between 250 m in central Greece and 1240 m in north Euboea study area, whereas the calculated water residence times range between 27 and 555 years. Our data suggest the possible presence of an unknown until know U-rich plutonic rock formation in Kamena Vourla area and immiscibility of the fresh and thermal groundwaters in the studied areas.

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An assessment of the external radiological impact in areas of Greece with elevated natural radioactivity

Cited by 35 publications

References 12 publications

Distribution of low-level natural radioactivity in a populated marine region of the easternMediterranean Sea

Distribution of low-level natural radioactivity in a populated marine region of the easternMediterranean Sea

Natural Radioactivity Levels and Estimation of Radiation Exposure in Environmental Soil Samples from Tulkarem Province-Palestine

Radiological and hydrochemical study of thermal and fresh groundwater samples of northern Euboea and Sperchios areas, Greece: insights into groundwater natural radioactivity and geology

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