Predicting plant uptake of organic chemicals from soil or air using octanol/water and octanol/air partition ratios and a molecular connectivity index

摘要

A bioconcentration ratio (BCR) represents the ratio of the concentration of a chemical found in an exposed biological system, such as a plant or fish, to the concentration in the exposure medium (water, soil, or air). A comparison is made of the precision and accuracy of the molecular connectivity index (MCI) and the octanol/water partition coefficient (K_ow) as predictors of BCRs from the soil matrix into above-o9r below-ground vegetation tissues. Calculated octanol/air partition coefficient (K_oa) values Are compared with calculated K_ow and MCI values as predictors of measured air-to-plant CBRs.