Research Article
Evaluation of Phytoavailability of Heavy Metals to Chinese Cabbage (Brassica chinensis L.) in Rural Soils
Table 2
Single extraction procedures used.
| Extraction method | Liquid : solid ratio | Equilibration time | Reference |
| Rhizon soil solution samplers | At field capacity | 40-day incubation | | Distilled water | 5 : 1 | 16 h | Mench et al. [34] | 0.1 M NaNO3 | 5 : 2 | 2 h | Gupta and Aten [35] | 0.01 M CaCl2 | 10 : 1 | 3 h | Novozamsky et al. [9] | 0.11 M HOAc | 20 : 1 | 16 h | Ure et al. [36] | 0.1 N HCl | 10 : 1 | 1 h | Baker and Amacher [16] | 0.05 M EDTA | 10 : 1 | 1 h | Wear and Evans [37] | 0.005 M DTPA, 0.01 M CaCl2, and 0.1 M TEA | 2 : 1 | 2 h | Lindsay and Norvell [17] |
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