Vol. 4, 2019

Original research papers

Radioecology

THE TENSILE BREAKING STRENGTH OF PHRAGMITES AUSTRALIS (CAV.) TRIN. EX STEUD. LEAVES AS A CHRONIC IRRADIATION EFFECT

D. Ganzha, D. Ganzha, A. Nazarov, B. Sploshnoi

Pages: 103–107

DOI: 10.37392/RapProc.2019.20

Tension breaking strength of common reed leaves was studied. Samples of leaves were taken in six aquatic ecosystems in the Chernobyl exclusion zone. In the samples of leaves, the specific activity of 90Sr and 137Cs was measured, as well as the accumulation of macro elements of the plant’s mineral nutrition. According to the measurement results, the doses of internal radiation from the incorporated radionuclides were calculated. A close statistical relationship was established between the tensile breaking strength of the leaves with respect to their radiation exposure and the reciprocal statistical relationship of irradiation dose to the accumulated leaves to macroelements. It is shown that the tensile breaking strength of the leaves is mainly influenced by the irradiation dose from incorporated 137Cs in the leaves. The data obtained show that the damaging effect of ionizing radiation leads to an increase in the tensile breaking strength of the leaves, and the enrichment with macroelements of mineral nutrition has a radioprotective effect. The results of statistical analysis indicate that the tensile breaking strength of common reed leaves can be considered a reliable test when assessing the irradiation dose of internal exposure from incorporated radionuclides.
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