Natural radioactive nuclides in some Tunisian thermo-mineral springs

Spatial distribution of the 226Ra activity concentrations in well and spring waters in Serbia and their relation to geological formations

“…The 226 Ra activity concentrations were found to be below 1 Bq L − 1 in more than 80% of the analysed spring water samples. The mean activity concentration of 226 Ra in springs (0.57 Bq L − 1 ) was similar to those of 0.62 and 0.46 Bq L − 1 , reported for spring waters in Hungary (Somlai et al, 2007) and Tunisia (Labidi et al, 2002), respectively.…”

“…Their chemical compositions evolve from calcic and magnesian chloro-bicarbonated to sodic bicarbonated. Higher radium activity concentrations were also reported for the thermo mineral springs in Morocco (up to 3.7 Bq L − 1 ; Hakam et al, 2001) and Tunis (up to 3.9 Bq L − 1 ; Labidi et al, 2002). A high level of 226 Ra of 5.7 Bq L − 1 caused by high temperature of spring waters flowing through rocks with enhanced uranium content was reported for the spring water collected in Mexico (Villalba et al, 2006).…”

Assessment of radioactive pollution around a fertilizer factory complex in the North-Eastern part of Bangladesh

“…A comparative study of the activity concentrations of 226 Ra,232 Th and 40 K in water samples of the study area with the previous measurements from different countries of the world shows the average activities of 226 Ra are higher than those observed in Egypt (0.58 Bq.L -1 ) (Mourad et al, 2009), the Chittagong Region of Bangladesh (drinking water: 0.043 ± 0.017 Bq.L -1 ) , the Eastern Black Sea region of Turkey (tap water: 0.019 Bq.L -1 ) (Cevik et al, 2006), Qena, Egypt (drinking water: 0.048 ± 0.0259 Bq.L -1 , groundwater: 0.07918 ± 0.02886 Bq.L -1 ), Safaga-Quseir, Egypt (drinking water: 0.05624 ± 0.02849 Bq.L -1 , groundwater: 0.11285 ± 0.0333 Bq.L -1 ) (Khalifa, 2004), Tunisia (springs: 0.03404 -3.8961 Bq.L -1 ) (Labidi et al, 2002) and Hungary (bottled mineral water: 0.0999 to 2.997 Bq.L -1 ) (Somlai et al, 2002), while they are lower than those found in the Portuguese rivers Tejo and Duro (16.2 ± 6.7 and 19.8 ± 8.7 Bq.L -1 ), and the Bay of Bengal (surface seawater: 5.4 ± 2.4 to 29.0 ± 8.3 Bq.L -1 ) (Ghose et al, 2000). A very high concentration of 226 Ra was reported in the Ikaria Sea (1200 ± 1000 Bq.L -1 ), French rivers (1 to 730 Bq.L -1 ) and Czechoslovakia (10 to 3800 Bq.L -1 ) (Ghose et al, 2000).…”

“…Also, the assessment of fluoride and heavy metal pollution caused by such a plant was the objective of many investigations (El-Bahi et al, 2004;Wang et al, 2005;Loganathan et al, 2007). In particular, elevated concentrations of several natural radionuclides were found in water and soils collected from different rivers, beaches, oceans and other landscapes (UNSCEAR, 1982(UNSCEAR, , 1988(UNSCEAR, , 2000Alam et al, 1999;Chowdhury et al, 1999;Ghose et al, 2000;Labidi et al, 2002;Somlai et al, 2002;Mireles et al, 2003;Cevik. et al, 2006;Chowdhury et al, 2006;Huy and Luyen, 2006;Khalifa, 2004;Mehra et al, 2007;Uchida et al, 2007;Radenkovic et al, 2009;Salbu and Skipperud, 2009).…”

Natural radioactive nuclides in the thermal waters of the Polish Inner Carpathians

“…On the basis of the data concerning the temperature, mineralization and uranium and radium activity concentrations of some selected thermal waters from north-west Croatia (Marović et al 1996), the French Massif Central (Rihs & Condomines 2002), Spanish Andalusia (Due±as et al 1998 and from north-east Tunisia (Labidi et al 2002), the values of statistical parameters were estimated and summarized (Table 5). The following remarks have arisen from the analysis of these data.…”