Table 4.
Descriptive statistics (mean ± SD, median, range) and results of testing differences between metal(loid)s levels in nails of dogs sampled in the control and former Salsigne mining area in the Orbiel valley, france.
| Metal(loid) | All (N = 14) |
Control area (N = 6) | Former mining area (N = 8) | Difference between two areas (U, p) |
|---|---|---|---|---|
| Ba (µg/kg) | 3874 ± 3841, 2362, 460-12504 | 1981 ± 1190, 1716, 460–3779 | 5294 ± 4583, 3216, 1115–12,504 | 13, 0.175 |
| Ca (mg/kg) | 1040 ± 368, 929, 651–1948 | 1123 ± 460, 1028, 667–1948 | 978 ± 301, 905, 651–1535 | 29, 0.561 |
| Cd (µg/kg) | 6.70 ± 4.95, 5.78, 1.16–14.3 | 5.98 ± 5.89, 2.42, 1.68–14.3 | 7.24 ± 4.48, 7.21, 1.16–14.3 | 21, 0.747 |
| Co (µg/kg) | 67.1 ± 47.5, 50.8, 13.8–173 | 60.2 ± 48.4, 43.9, 13.8–150 | 72.3 ± 49.4, 63.8, 21.7–173 | 18, 0.478 |
| Cu (mg/kg) | 7.32 ± 2.47, 7.10, 3.07–11.5 | 5.41 ± 1.68, 5.87, 3.07–7.11 | 8.76 ± 1.96, 9.19, 5.01–11.5 | 5, 0.017 |
| Fe (mg/kg) | 213 ± 154, 169, 36.9–598 | 169 ± 133, 121, 36.9–413 | 245 ± 169, 216, 75.4–598 | 17, 0.401 |
| Hg (µg/kg) | 91.1 ± 63.8, 76.4, 25.4–226 | 53.8 ± 23.1, 50.5, 28.1–79.6 | 119 ± 71, 108, 25.5–226 | 11, 0.107 |
| Mg (mg/kg) | 157 ± 34, 151, 120–251 | 150 ± 16, 151, 120–167 | 162 ± 43, 150, 123–251 | 24, 1.00 |
| Mn (mg/kg) | 3.62 ± 2.27, 3.13, 0.787–8.25 | 3.03 ± 1.78, 2.79, 0.787–6.11 | 4.06 ± 2.61, 3.43, 1.02–8.25 | 19, 0.561 |
| Mo (µg/kg) | 48.0 ± 41.5, 33.9, 16.7–166 | 48.2 ± 32.3, 35.3, 18.7–97.5 | 47.8 ± 49.5, 32.6, 16.7–166 | 30, 0.478 |
| Pb (µg/kg) | 771 ± 677, 630, 79.8–2711 | 514 ± 327, 491, 79.8–1057 | 963 ± 822, 799, 98.1–2711 | 13, 0.175 |
| Se (µg/kg) | 664 ± 249, 535, 345–1062 | 719 ± 310, 733, 345–1062 | 622 ± 205, 523, 500–1043 | 28, 0.651 |
| Tl (µg/kg) | 5.78 ± 2.97, 4.91, 1.83–12.4 | 5.82 ± 3.06, 5.11, 1.83-10.0 | 5.75 ± 3.11, 4.91, 1.97–12.4 | 24, 0.948 |
| U (µg/kg) | 14.0 ± 10.6, 9.92, 3.29–36.8 | 14.0 ± 11.9, 8.41, 3.29–30.5 | 14.0 ± 10.3, 11.0, 3.82–36.8 | 20, 0.651 |
| V (µg/kg) | 483 ± 390, 384, 70.3–1518 | 343 ± 290, 232, 70.3–870 | 589 ± 438, 506, 176–1518 | 16, 0.333 |
| Zn (mg/kg) | 210 ± 47, 194, 121–284 | 189 ± 43, 187, 121–239 | 226 ± 47, 222, 170–284 | 14, 0.220 |
N, number of samples; differences between two areas were tested by Mann-Whitney U test; U- Mann-Whitney U statistic, p, p value.