Mass balance calculations showed thatS. validusuptake alone
accounted for a significant contribution (6e13% for the roots and
22e49% for the shoots) of the total loss of clofibric acid. On the
other hand, for both naproxen and diclofenac, only a small per-centage (less than 5.0%) of the initial mass of pharmaceutical in
solution was assimilated by the roots and shoots, implying that
other pathways of loss (photodegradation and biodegradation)
were more significant