Figure 5.

Prediction of environmental fates of selected groups of functional chemical compounds extracted from the PubChem Compound database. The y axis indicate the percentage of compounds within each category (versus the corresponding negated class) of the lists that are predicted to belong to any of the classes: CM, central metabolism path compound; NB, nonbiodegradable path compounds; CD, carbon dioxide path compound; CMCDs, central metabolism and carbon dioxide path compounds. The red coloured is a signal of recalcitrance, whereas the green is an indication of degradability. The category of flame retardants was excluded from this analysis, because only a few (six chemical specimens) were listed in the accessed dabases. Note that, by any criterion, the herbicides form the most-difficult-to-degrade group of chemicals.