Root uptake and translocation of ¹⁴C-heptachlor and its degradation products in soil by zucchini and tomato seedlings

Abstract

To investigate root uptake and translocation of heptachlor and its degradates (cis-heptachlor epoxide and 1-hydroxychlordene) in soil, zucchini and tomato seedlings were transplanted to soil approximately four months after treatment with ¹⁴C-heptachlor. The results indicated that a relation between the root concentration factor and the log P_ow did not follow Briggs’ theory, probably due to the contribution of plant metabolism. It also appeared that a compound with a lower log P_ow tends to show higher mobility from root to shoot.