Natural Effective Half-Life of 137Cs in Tea Plants

Unlu, M.; Topcuoğlu, S.; Küçükcezzar, Rezzan; Varinlioğlu, Ahmet; Güngör, Nurdan; Bulut, Aylin; Güngör, Emin

doi:10.1097/00004032-199501000-00012

Cited by 28 publications

(5 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…During the emergency, Cekmece Nuclear Research and Training Center performed an analysis of various substances. In their report, it was noted that the surface soil 137 Cs activity concentration of the eastern part of the Black Sea mountains was around 4-4.5 kBq kg À1 at the 0.5 cm soil in the year 1988 (Unlu et al, 1995). And also the level of 137 Cs activity concentration in Turkish tea plant was found to be the maximum value of 44 kBq kg À1 for the 1986 products by Gedikoglu and Sipahi (1989).…”

Section: Introductionmentioning

confidence: 94%

Determination of indoor radon and soil radioactivity levels in Giresun, Turkey

Çeli̇k

Çevik

Çelik

et al. 2008

Journal of Environmental Radioactivity

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 94%

Determination of indoor radon and soil radioactivity levels in Giresun, Turkey

Çeli̇k

Çevik

Çelik

et al. 2008

Journal of Environmental Radioactivity

View full text Add to dashboard Cite

“…During the emergency, Cekmece Nuclear Research and Training Center (CANEM) performed an analysis of various substances. It their report, it has been noted that the surface soil 137 Cs activity concentration of the eastern part of the Black Sea mountains was around 4000-4500 Bq/kg at the 0.5cm soil in the year 1988 (7) .…”

mentioning

confidence: 95%

Determination of radioactivity levels of soil samples and the excess of lifetime cancer risk in Rize province, Turkey

Dizman¹,

Görür²,

Keser³

2016

IJRR

View full text Add to dashboard Cite

Human beings are exposed to background radiation that stems both from natural and manmade sources. Natural background radiation, which is equivalent to 2.4 mSv per person, makes up approximately 80% of the total radiation dose a person is exposed in a year (1). Soil radionuclide activity concentration is one of the main determinants of the natural background radiation. Volcanic geographic structures as well as rocks that are rich in phosphate, granite and salt contain natural radionuclides like 238 U, 232 Th and 40 K. When rocks are disintegrated through natural processes, radionuclides are carried to the soil by rain and .lows (2). The natural radioactivity in soil comes from 226 Ra, 232 Th and from natural 40 K. Some other terrestrial radionuclides, including those of the 235 U series, 87 Rb, 138 La, 147 Sm and 176 Lu exist in nature but at such low levels that their contributions to the dose in the humans are small. Arti.icial radionuclides can also be present such as 137 Cs, resulting from fallout from weapons testing. 137 Cs is a .ission product which is formed through nuclear tests and accidents. The deposition of 137 Cs in soil is important since its half-life is 30.2 years and it has a gamma emission of 661 keV (3). The radiological

show abstract

“…Among these radionuclides, 137 Cs with a half-life of w30 y has remained in the ecosystems many years after the accident. It was reported that the surface soil 137 Cs activity concentration of the Eastern Black Sea mountains was around 4-4.5 kBq kg À1 at the 0.5 cm soil in the year 1988 (Unlu et al, 1995). The level of 137 Cs activity concentrations in Turkish tea plants was found to be as high as 44 kBq kg À1 for the 1986 products (Gedikoglu and Sipahi, 1989).…”

Section: Introductionmentioning

confidence: 99%