The assessment of air and soil as contributors of some trace metals to vegetable plants. II. Translocation of atmospheric and laboratory-generated cadmium aerosols to and within vegetable plants.
Radish, spinach and lettuce were grown in the field on 109Cd-labelled soil. Efficient transfer to the plant was observed with concentration factors [Cd concn. in plant (dry wt) divided by Cd concn. in soil (dry wt)] of between 0.30 and 2.00. Soil uptake of Cd accounted for only 69-64% of Cd in the plants, the remainder arising from atmospheric deposition. By fumigating radish, lettuce and carrot with Cd aerosol in a wind tunnel and harvesting and analysis subsequent to further growth, translocation of Cd to non-exposed parts of plants was demonstrated. The percentage of deposited Cd which is translocated in the wind-tunnel-fumigated plants is small (0.6-4%), but is larger in plants grown in the field (28-36%) or in a laboratory growth cabinet (12-35%).
Institute of Aerosol Science, University of Essex, Colchester, United Kingdom.
R M
RM
Harrison
M B
MB
Chirgawi
D000336:Aerosols; D000393:Air Pollutants; D002104:Cadmium / Q000032:analysis / Q000378:metabolism*; D008834:Microclimate; D010944:Plants / Q000032:analysis / Q000378:metabolism*; D012989:Soil Pollutants; D014131:Trace Elements / Q000032:analysis / Q000378:metabolism*; D014675:Vegetables / Q000032:analysis*
D000336:Aerosols; D000393:Air Pollutants; D012989:Soil Pollutants; D014131:Trace Elements; D002104:Cadmium