Use of inorganic and organic compounds as decontaminates for cobalt T-60 and cesium-134 by clover plant grown on Inshas Sandy soil

摘要

Out door lysimeter experiment was carried out to elucidate the effect of four inorganic and three organic salts on (sup 60) Co and (sup 134) Cs uptake and dry matter yield of three cuts of clover in the soil Inshas A new concept was proposed for assessing the difference in capacity of soil to supply radionuclides (i.e. (sup 60) Co and (sup 134) Cs) to plants as affected by applied inorganic or organic compounds. The relation of plant tissues (P(sub c)) Co/IR Cs content with increasing time can be expressed as log (Pc) = A + B log time (T), where A and B the regression. When the same plant species is grown on the same soil differ only in the applied compound (e.g. Fe-EDDHA, Fe-DTPA, Fe-O A C, Fe(Coo)z, A1(OH)3, Ca(H2 P O(sub 4))2 and Fe(sub 2) O(sub 3)) the equation will change to, log (P'c) = A(sup +) B' log (T) (I). Based on both equations, the relationship between (Pc) becomes; log (P'c) = ((A'B')/(A(sup B) + A (sup B''))) +(1/A'B + A (sup B'')) log (Pc) (II). The intercept (C) and slope (S) in Eq. (II) were determined among 7 treatments (for either (sup 60) Co or (sup 134) Cs). Then the difference of either Co or Cs accumulation with time between control and any other treatment was evaluated according to (C) and (S) values. The data also that Fe-DTPA is preferred for (sup 60) Co as enhancing compound for plant uptake (for decontamination use); compared with other applied salts; on the other hand, any tested salts did not significantly effect (sup 134) Cs taken by clover. Also, it was found that more than 70% of total cobalt uptake was accumulated in the roots which indicate that Co is less mobile in plants than Cs. 3 figs., 4 tabs. (Atomindex citation 28:017706)