Table 2. Concentrations of heptachlor and its metabolites in the shoots and roots of the tomato and zucchini cultivated in soil with aged 14C-heptachlor.
| Heptachlor | cis-Heptachlor epoxide | 1-Hydroxychlordene | Others | PESsc) | Total | |
|---|---|---|---|---|---|---|
| Tomato | ||||||
| Conc. in shoot (µg eq./kg) | 0.28 | 3.23 | 0.86 | 6.13 | 8.11 | 18.60 |
| Conc. in root (µg eq./kg) | 5.45 | 50.84 | 5.16 | 26.13 | 17.79 | 105.38 |
| SR ratioa) | 0.051 | 0.063 | 0.166 | — | — | — |
| RCFb) | 76 | 218 | 57 | — | — | — |
| Zucchini | ||||||
| Conc. in shoot (µg eq./kg) | 0.67 | 4.24 | 1.17 | 5.20 | 3.59 | 14.87 |
| Conc. in root (µg eq./kg) | 17.78 | 64.88 | 4.49 | 14.93 | 8.07 | 110.16 |
| SR ratioa) | 0.037 | 0.065 | 0.260 | — | — | — |
| RCFb) | 248 | 279 | 50 | — | — | — |
a) SR ratio, (concentration in shoot/concentration in root) ratio. b) RCF, root concentration factor. c) PESs, post-extraction solids. — not applicable.