Table 3.
Distribution of OCPs (ng g−1) in Huangpi soils across land-use types and two soil depths.
| Land-Use Type | Site | 0–10 cm | 10–20 cm | ||||
|---|---|---|---|---|---|---|---|
| Range | Ave | Std. | Range | Ave | Std. | ||
| Farmland (FL) | S3 | ND–0.04 | 0.01 | 0.01 | 0.007–1.70 | 0.61 | 0.67 |
| S12 | ND–3.00 | 0.46 | 1.04 | ND–3.11 | 0.79 | 1.13 | |
| S15 | ND–0.04 | 0.01 | 0.01 | ND–2.60 | 0.37 | 0.90 | |
| S16 | 0.001–0.03 | 0.011 | 0.01 | 0.001–6.92 | 0.90 | 2.43 | |
| ∑ OCPs FL | 0.001–3.11 | 0.49 | 1.07 | 0.008–14.33 | 2.67 | 5.13 | |
| Pooled Ave ± Std. | 1.58 ± 3.10 | ||||||
| Paddy field (PF) | S9 | ND–14.00 | 2.97 | 4.77 | ND–16.30 | 2.66 | 5.59 |
| S10 | ND–4.10 | 0.53 | 1.44 | ND–10.20 | 1.84 | 3.64 | |
| S13 | ND–12.00 | 1.64 | 4.19 | 0.001–9.76 | 1.61 | 3.46 | |
| S14 | ND–2.40 | 0.36 | 0.83 | ND–8.67 | 1.14 | 3.04 | |
| S18 | ND–0.550 | 0.08 | 0.19 | ND–79.90 | 10.01 | 28.24 | |
| ∑ OCPs PF | ND–33.05 | 5.58 | 11.42 | ND–124.83 | 17.26 | 43.97 | |
| Pooled Ave ± Std. | 11.42 ± 27.70 | ||||||
| Plastic greenhouse (PGH) | S4 | ND–0.12 | 0.02 | 0.04 | 0.02–1.58 | 0.30 | 0.53 |
| S5 | ND–0.78 | 0.11 | 0.27 | ND–8.23 | 1.37 | 2.82 | |
| S6 | ND–0.11 | 0.04 | 0.04 | ND–0.13 | 0.04 | 0.05 | |
| S17 | ND–1.100 | 0.24 | 0.377 | 0.002–0.15 | 0.03 | 0.05 | |
| ∑ OCPs PGH | ND–2.11 | 0.41 | 0.73 | 0.022–10.09 | 1.74 | 3.45 | |
| Pooled Ave ± Std. | 1.07 ± 2.09 | ||||||
| Barren land (BL) | S1 | ND–14.00 | 1.80 | 4.93 | ND–4.19 | 0.54 | 1.47 |
| S2 | 0.09–1.30 | 0.58 | 0.50 | ND–0.13 | 0.04 | 0.05 | |
| S7 | ND–0.15 | 0.03 | 0.05 | ND–0.17 | 0.03 | 0.06 | |
| S8 | ND–0.26 | 0.09 | 0.10 | ND–0.01 | 0.002 | 0.003 | |
| S11 | ND–2.40 | 0.38 | 0.83 | ND–2.18 | 0.34 | 0.76 | |
| ∑ OCPs BL | 0.09–18.11 | 2.88 | 6.41 | ND–6.68 | 0.95 | 2.34 | |
| Pooled Ave ± Std. | 1.92 ± 4.38 | ||||||
| ∑ OCPs in 18 samples | 0.091–56.38 | 9.36 | 19.63 | 0.023–155.93 | 22.62 | 54.89 | |