Table 2 Mineral content of untreated and preprocessed poplar biomasses
|  | Ba (µg/g) | Ca (µg/g) | Fe (µg/g) | K (µg/g) | Mg (µg/g) | Mn (µg/g) | Na (µg/g) | P (µg/g) | S (µg/g) | Zn (µg/g) | Si (µg/g) |
|---|---|---|---|---|---|---|---|---|---|---|---|
Untreated | 23.3 ± 0.7 | 3250 ± 133 | 23.8 ± 14 | 2225 ± 62 | 449 ± 22 | 5.9 ± 0.1 | 36.5 ± 1.6 | 434 ± 12 | 200 ± 10 | 19.9 ± 0.3 | 41.6 ± 8.5 |
Neutral | 24.9 ± 0.6 | 2989 ± 113 | 35.4 ± 3.0 | 278 ± 75 | 327 ± 12 | 5.0 ± 0.1 | 36.5 ± 2.7 | 102 ± 3 | 223 ± 8 | 20.0 ± 1.0 | 39.6 ± 1.0 |
Acidic-neutral | 23.3 ± 0.2 | 2136 ± 140 | 30.3 ± 3.1 | 0.0 ± 0.0 | 0.0 ± 0.0 | 0.0 ± 0.0 | 36.8 ± 2.5 | 219 ± 4 | 281 ± 48 | 0.0 ± 0.0 | 40.1 ± 9.0 |
Acidic | 16.2 ± 0.6 | 1667 ± 182 | 22.8 ± 2.1 | 703 ± 10 | 131 ± 25 | 1.8 ± 0.1 | 32.9 ± 0.7 | 245 ± 8 | 3459 ± 48 | 0.0 ± 0.0 | 44.4 ± 3.0 |