PROCESS OF BIOINDICATION OF RADIOACTIVE CONTAMINATION Russian patent published in 1997 - IPC

FIELD: environmental control. SUBSTANCE: midpart of well-developed one-year (multiyear) shoots cut at end of vegetation period of birch tree on territory subjected to radioactive contamination. Full transverse microsections are stained, number of anomalies of microstructure of stalk are counted under microscope. Index of radiation characteristic of contamination of territory is read by calculation curve by number of detected anomalies. Usage of process of bioindication makes it possible to demonstrate level of radioactive contamination of territory without restoring to physical dosimetry, cytological and biochemical investigations, to establish threshold of dosage loads, to reconstruct dynamics of radiation situation on contaminated territory. EFFECT: improved authenticity. 3 dwg