THE TIME-SPACE CHANGING REGULARITY OF ORGANIC SUBSTANCES IN AIR-BORNE PARTICULATES AT DEFFERENT HEIGHT IN LANZHOU CITY
兰州市不同高度大气飘尘中有机物污染的时空变化规律

The pollutional condition and the temporal-spatial variation of airborne par-ticulates in different seasons and at different heights in Lanzhou City were studies. By using a high-altitude balloon carried with sampler for samping. The concentration of air-borne particulates, the concentration of organic substances in airborne particulates and their induced mutagenicities have been taken as indices. The potential defect on the health of the high building dweller was also studied, and the appropriate measures of prevention and control were put forward