PROCEDURE ESTABLISHING POLLUTION DEGREE OF ATMOSPHERE BY SULFUR-CONTAINING COMPOUNDS IN URBAN AREAS AND TERRITORIES BORDERING ON THEM BY METHOD OF PHYTOINDICATION Russian patent published in 2003 - IPC

FIELD: biological monitoring of environment. SUBSTANCE: pollution degree in correspondence with invention is established by method of phytoindication with the aid of biological indicator. Birch is utilized in the capacity of biological indicator and pollution degree is established by amount of exogenous sulfur accumulated in its leaves. Amount of exogenous sulfur is found by difference between amount of total sulfur in point of determination and amount of sulfur across section of test. Ecological zoning of territories is conducted on bases of obtained data. EFFECT: possibility of early indication of pollution zones by sulfur-containing compounds. 2 cl, 3 tbl