Natural radioactivity measurements in the city of Ptolemais (Northern Greece)

Psichoudaki, Magda; Papaefthymiou, H.

doi:10.1016/j.jenvrad.2007.12.001

Cited by 42 publications

(12 citation statements)

References 25 publications

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“…It can be observed that the mean mass elemental concentration of uranium for soils analyzed here (2.52 mg kg − 1 ) is comparable to those obtained for the cities of Lagos (Obed et al, 2005) and Manisa (Erees et al, 2006). The mean mass elemental concentration of thorium (9.40 mg kg − 1 ) is consistent with values reported for the cities of Banja Luka (Jankovic et al, 2008), Istanbul (Karahan and Bayulken, 2000), Ptolemais (Psichoudaki and Papaefthymiou, 2008) and Windhoek (Oyedele, 2006). The value of mean elemental concentration of potassium (1.60%) is close to the values reported for the cities of Banja Luka (Jankovic et al, 2008), Ptolemais (Psichoudaki and Papaefthymiou, 2008) and Windhoek (Oyedele, 2006).…”

Section: Resultssupporting

confidence: 89%

Distribution of lithogenic radionuclides in soils of the Belgrade region (Serbia)

Mandić¹,

Dragović²,

Dragović³

2010

Journal of Geochemical Exploration

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Section: Resultssupporting

confidence: 89%

Distribution of lithogenic radionuclides in soils of the Belgrade region (Serbia)

Mandić¹,

Dragović²,

Dragović³

2010

Journal of Geochemical Exploration

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“…The activities were determined from measuring their respective decay daughters. The activity concentrations were calculated from the intensity of each line taking into account the mass of the sample, the branching ratios of the γ-decay, the time of counting and the efficiencies of the detector [11] [12].…”

Section: Radioactivity Measurementsmentioning

confidence: 99%

Assessment of the Heavy Metals and Natural Radioactivity in Phosphate Mines and Occupational Health Effects at Some Egyptian Regions

Atta¹,

Zakaria²,

Ibrahim³

2016

JEP

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In this work, the specific activities of natural radionuclides, namely 238 U series, 232 Th series and 40 K, have been measured in collected sedimentary phosphate deposits samples from El-Hamraween, El-Quser and Safaga phosphate mines in Egypt. HPGe γ-spectrometry was used. This study was undertaken to estimate the radiation hazard indices in phosphate mining at the studied mines on their occupational workers, to establish correlation relationships between the some measured heavy metals such as As, Cd and Pb in blood workers and their concentration in phosphate rock ores and to determinate the biomarkers in the blood workers such as malondialdehyde (MDA) and superoxide dismutase (SOD). The phosphate mine sample of El-Hamrawein has the lowest activity concentration of 226 Ra, 232 Th and 40 K in comparison to the phosphate mine samples of El-Quseir and Safaga (El-Hamrawein < El-Quseir < Safaga). The activity concentrations for the radionuclide's considerably were fluctuated; for 226 Ra activity concentrations varied from 222.4 to 255.8 Bq•kg −1 , 122.4 to 188.3 Bq•kg −1 and 115.4 to 165.8 Bq•kg −1 for Safaga, El-Quseir and El-Hamrawein, respectively. For 232 Th activity concentrations varied from 135.6 to 212.3 Bq•kg −1 , 112.8 to 167.4 Bq•kg −1 and 132.8 to 188.6 Bq•kg −1 for Safaga, El-Quseir and El-Hamrawein, respectively. For 40 K activity concentrations varied from 225.2 to 312.8 Bq•kg −1 , 168.7 to 268.9 Bq•kg −1 and 95.2 to 155.8 Bq•kg −1 for Safaga, El-Quseir and El-Hamrawein, respectively. The workers of old ages have higher concentration of the investigated heavy metals than those of young ages. There is a good relation between the concentration of the investigated metals in phosphate mine samples and their concentration in blood of the occupational workers in these mines.

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Section: Radioactivity Measurements For Sediment Samples 1) Sample Prmentioning

confidence: 99%

Evaluation of Some Radioactive Materials and Heavy Metals in Marine Environment of Alexandria Coastline, Egypt

Atta¹,

Zakaria²

2014

JEP

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The present work is carried out to obtain quantitative information of some natural radioactive materials and heavy metals in water and sediment samples along the Alexandria Coastline, as a step to construct the baseline map of the background radioactivity level in the Egyptian environment and also as a base data to assess the future physicochemical changes of surface coastal water and sediment in the studied area. The distribution of natural gamma emitting radionuclides such as 238 U, 232 Th and 40 K has been established by gamma spectrometry. The results show that the area of Alexandria coast is affected by the existence of high back-ground radiation from the Rashid coast at the eastern side which has high levels of radioisotope concentrations due to black sand deposits which are dominant in this area. The absorbed dose rate (D, nGy•h −1 ), annual effective dose equivalent, external hazard index (H ex ) and representative level index (I r ) of the investigated radioactive materials were calculated. The concentration of Pb 2+ , Cd 2+ , Ni 2+ , Mn 2+ , Cu 2+ , Co 2+ , Zn 2+ and Cr 3+ ions has been determined using Atomic Absorption Spectroscopy. The total dissolved solids (TDS) in water samples ranged from 33,000 mg/l to 42,000 mg/l, the salinity ranged from 37.9% to 40.5% and pH ranged from 7.6 to 7.9. Some of the sediment quality guidelines are calculated and they are the metal pollution index (MPI), the contamination factor (CF), degree of contamination (C deg ), and Pollution load index (PLI).

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Natural radioactivity measurements in the city of Ptolemais (Northern Greece)

Cited by 42 publications

References 25 publications

Distribution of lithogenic radionuclides in soils of the Belgrade region (Serbia)

Distribution of lithogenic radionuclides in soils of the Belgrade region (Serbia)

Assessment of the Heavy Metals and Natural Radioactivity in Phosphate Mines and Occupational Health Effects at Some Egyptian Regions

Evaluation of Some Radioactive Materials and Heavy Metals in Marine Environment of Alexandria Coastline, Egypt

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