Measurement of environmental radioactivity for estimation of radiation exposure from saline soil of Lahore, Pakistan

Natural radioactivity and the resulting radiation doses in some kinds of commercially marble collected from different quarries and factories in Egypt

“…The droplets are substantially spherical and have convex surfaces for samples M (1-8). Similar images have been observed for other sample M (9)(10)(11)(12)(13)(14), where the image reflects the shape of island structures. As the calcium carbonate increases, still amorphous except for few grains that became crystallized owing to their polarization or orientation under the irradiation process.…”

“…It can be observed that in all of them, Ca is the predominant, followed by Na, Mg. The M (10, 12, 13 14) are characterized by appear Ti and M (12,13,14) appear K meanwhile disappear in other samples. In sample M (14) presents a significant amount of iron.…”

Magnetic, chemical and radionuclide studies of river sediments and their variation with different physiographic regions of Bharathapuzha river, southwestern India

“…The use of pesticide on soils can also lead to a reduction (by dissolution) of Febearing minerals and SP grains, as reported by Agustine et al (2013). The non-organic fertilisers mainly contain phosphate, nitrate, ammonium and potassium salts, and are also considered to be a potential source of heavy metals and natural radionuclides (Akhtar et al, 2005;Savci, 2012). Pollution of paddy soils by potentially toxic metals mainly due to phosphate fertiliser applications has been reported, especially in areas with economic development.…”

“…These results indicate that sediments with different activity concentrations of 226 Ra, 232 Th and 40 K can be collected along the Bharathapuzha River from different physiographic regions. The higher concentration of 40 K may be due to the use of chemical fertiliser to a large extent in agriculture (Akhtar et al, 2005), e.g., potassium fertilisers are excessively used in agriculture activities (intense cultivation for wet and dry crops) in this area (Kannan and Joseph, 2009). Studies of fertilisers in several countries, including Finland (Mustonen, 1985), Italy (Righi et al, 2005), Saudi Arabia (Alharbi, 2013), Nigeria (Jibiril and Fasae, 2012) and India (Chauhan et al, 2013), have reported the enhanced concentration of natural radionuclides.…”

Indoor radon concentration, outdoor gamma dose rates and impact of geology in the Dhirkot area, Azad Jammu and Kashmir, sub-Himalayas, Pakistan

“…1). However, in Lahore, Pakistan, at lower altitude (800 feet), the average gamma dose rate has been reported as 65 nGy/h (Akhtar et al, 2005). The outdoor gamma dose rates in Turkey (Erees et al, 2006) and Japan (Chikasawa et al, 2001) have been reported to range from 78.3 nGy/h to 135.7 nGy/h and 13.8 nGy/h to 187 nGy/h, respectively.…”