Dynamics of transfer and distribution of 95Zr in the broadbean-soil ecosystem.
The transfer and distribution of (95)Zr in a simulated broadbean-soil system was studied by using isotope-tracer techniques. The results showed that the (95)Zr was mainly concentrated in the haulm, pod and root, and the activity concentration of (95)Zr in these tissues reached the maximum in the initial stage then decreased continuously. The activity concentration of (95)Zr in edible part-bean was relatively lower, which was just near to the detection limit. The (95)Zr in soil was mainly (97%) deposited in surface layer soil (0-6 cm), indicating that the (95)Zr absorbed by surface soil could not be moved downwards easily because of the strong adsorption. The dynamics of (95)Zr concentrations in broadbean and soil were also confirmed by application of nonlinear regression method.
Liu
Li-Li
LL
Key Laboratory of Nuclear Agricultural Science of the Ministry of Agriculture, Institute of Nuclear Agricultural Science, Zhejiang University, Hangzhou 310029, China.
Shi
Jian-Jun
JJ
Zhao
Xi-Yue
XY
Hua
Yue-Jin
YJ
D000327:Adsorption; D002681:China; D017753:Ecosystem; D005638:Fruit / Q000737:chemistry / Q000378:metabolism; D018517:Plant Roots / Q000737:chemistry / Q000378:metabolism; D011868:Radioisotopes / Q000032:analysis / Q000378:metabolism*; D012987:Soil / Q000032:analysis; D012990:Soil Pollutants, Radioactive / Q000032:analysis / Q000378:metabolism*; D031307:Vicia faba / Q000737:chemistry / Q000378:metabolism*; D015040:Zirconium / Q000032:analysis / Q000378:metabolism*
D011868:Radioisotopes; D012987:Soil; D012990:Soil Pollutants, Radioactive; D015040:Zirconium