Potential of Igniscum sachalinensis L. and Salix viminalis L. for the Phytoremediation of Copper-Contaminated Soils

Table 3

Soil pH, total soil Cu (Cu_-TOT), available soil Cu (Cu_-PAV), and Cu accumulated in harvested stem (Cu_-STEM) and leaf (Cu_-LEAF) of S. viminalis and I. sachalinensis grown on sewage amended soils (SAMS) and SAMS treated with ethylenediaminetetraacetic acid (SAMS + EDTA).

	pH [CaCl2]	Cu-TOT	Cu-PAV	Cu-STEM	Cu-LEAF
		[mg kg^−1 soil]	[mg kg^−1 soil]	[mg kg^−1 DM]	[mg kg^−1 DM]
Sewage amended soils
S. viminalis	6.9 ± 0.1^a	584 ± 44^a	9.7 ± 0.8^a	23 ± 4^a	30 ± 11^a
I. sachalinensis	6.8 ± 0.1^a	569 ± 52^a	9.1 ± 0.9^a	29 ± 8^a	17 ± 6^a
SAMS + EDTA
S. viminalis	6.7 ± 0.3^a	651 ± 48^a	63.2 ± 12.6^a	55 ± 35^a	181 ± 121^a
I. sachalinensis	7.1 ± 0.4^b	630 ± 75^a	112.9 ± 27.1^b	195 ± 135^b	617 ± 474^b
Soil treatment
Sewage amended soils	6.8 ± 0.1^a	576 ± 45^a	9.4 ± 0.8^a	26 ± 7^a	23 ± 11^a
SAMS + EDTA	6.9 ± 0.4^a	641 ± 59^b	88.0 ± 33.0^b	125 ± 118^b	399 ± 396^b

Different letters in the same column indicate significant difference (Holm-Sidak method at 𝑃<0.05). DM: dry mass. Values are mean ± standard deviation.