The influence of chernobyl on the radiocesium contamination in lichens in Turkey

Abstract

Lichen samples collected before and after the Chernobyl accident were analysed for radiocesium activity. I37 Cs activity was detected in some samples collected before Chernobyl. 134 Cs and 137 Cs were detected in all the samples after the accident. The levels of the total cesium activity counted in the samples proved that the eastern region of the Black Sea was affected by Chernobyl at a very high degree compared with other parts of Turkey.

Radiocesium accumulation and natural depuration rate in thyme plant after the chernobyl accident

“…4 In previous work, the 137 Cs activity detected was very high in lichen samples collected from the Çanakkale region in 1987 and 1989. 5 In general, the 137 Cs values of our results are higher than found in similar aromatic plants (exception Matricaria chamomilla and Salvia ringers) in the North Greece. 6 However, the 137 Cs activities are lower than the value reported in the thyme species Greece.…”

“…For this reasons, we think that the radioactive cloud not only arrived from the North over the West Anatolia, it also drifted from there over Greece and Italy. Albergel et al 5 also showed a similar result for the radioactive cloud progression over Europe. The distribution result of cesium radionuclides in O. vulgäre ssp is shown in Table 1.…”

Radioactivity concentrations in topsoil samples from the Thrace region of Turkey and assessment of radiological hazard

“…It was shown, using moss and lichen biomonitoring techniques, that the Eastern Black Sea experienced the Chernobyl fall-out more severely compared to other parts of Turkey (4,5), due to the high annual rainfall in that region. However, large scale studies have not yet been conducted, especially for soil.…”

Distribution of90Sr Activities in the Environmental Radiation Samples of Jeju Island, Korea

“…Moss and lichen have been used commonly as bioindicators of fallout radionuclides JRPR [3][4][5][6]. These bioindicators have crucial advantages in determining atmospheric fallout radionuclides, such as a large surface/volume ratio, and lack of well-developed root systems.…”