Table 2 Elemental concentration (trace elements: Co, Cr, Cu, Fe, Mn, Ni, Zn) ranges and means in parentheses
Plant part | N samples | Co | Cr | Cu | Fe | Mn | Ni | Zn |
|---|---|---|---|---|---|---|---|---|
Flowers | 2 | 16–104 [60] | 14–17 [16] | 6.5–9.5 [8.0] | 15–24 [20] | 34–945 [490] | 2905–5560 [4230] | 20–100 [60] |
Fruit capsule |  5 | 4.3–31 [13] | 2.3–17 [8.4] | 2.2–10 [5.9] | 8.0–30 [20] | 11–83 [35] | 1274–4001 [2660] | 9.0–22 [17] |
Immature seeds | 2 | 23–89 [56] | 15–28 [22] | 8.5–13 [11] | 30–43 [36] | 58–64 [61] | 754–1421 [1090] | 26–34 [30] |
Ripe seeds | 1 | 3 | 114 | 14 | 131 | 187 | 17,570 | 182 |
Young leaves | 12 | 3.0–198 [46] | 1.3–66 [16] | 0.1–17 [6.7] | 9–241 [63] | 21–182 [93] | 1105–10,750 [5388] | 10–244 [52] |
Old leaves | 21 | 12–75 [31] | 1.2–13 [6.9] | 0.9–11 [4.7] | 22–90 [46] | 95–461 [170] | 11,470–25,060 [16,490] | 45–249 [85] |
Bark | 7 | 4.4–28 [14] | 2.3–13 [6.3] | 1.0–10 [4.5] | 22–429 [85] | 33–89 [66] | 842–6820 [5260] | 18–83 [69] |
Phloem tissue | 3 | 12–49 [27] | 6.3–15 [10] | 1.3–6.6 [4.1] | 37–564 [220] | 62–126 [103] | 1390–9340 [5570] | 28–191 [100] |
Twigs | 14 | 1.9–36 [16] | 2.4–42 [8.0] | 0.5–33 [6.2] | 4.0–40 [17] | 5.0–259 [72] | 99–12,300 [4330] | 5.1–103 [49] |
Wood | 7 | 0.8–15 [5.0] | 1.9–4.7 [3.4] | 0.7–6.3 [2.5] | 3.7–10 [5.7] | 5.9–18 [11] | 443–1170 [862] | 4.8–14 [10] |
Roots | 1 | 26 | 6.5 | 0.7 | 512 | 164 | 1272 | 24 |