395
from 2.39 to 204 mg kg
−1
), then in the leaves (average value of 63.9 mg kg
−1
, ranges
from 1.59 to 210 mg kg
−1
) with the lowest average content in the stem (22.1 mg kg
−1
,
ranges from 0.55 to 91.5 mg kg
−1
). However, despite the high content of Sb in the
soil, the content of Sb in the plant was low (average content of 6.94 mg kg
−1
, ranges
from 0.25 to 58.2 mg kg
−1
), compared with the values for As and Tl in the same plants.
From the plant material that was analyzed, despite the As and Sb, special attention was given to the accumulation and transfer of Tl in different parts of the species
Centaurea leucomalla, and high bioaccumulation by the plants was found (average
content in the plant of 42.1 mg kg
−1
, ranges from 0.1 to 238 mg kg
−1
). The accumulation of Tl follows the behavior of As with its high content in all parts of the plant,
the highest in the root (86.3 mg kg
−1
, ranges from 10.3 to 238 mg kg
−1
) than in the
leaf (average of 22.5 mg kg
−1
, ranges from 0.1 to 75.2 mg kg
−1
) and the lowest in the
stem (average content of 17.4 mg kg
−1
, ranges from 1.86 to 69.1 mg kg
−1
).
13.3.3.2 Centaurea kavadarensis Micev.
From the results presented in Table 13.7, it can be noticed that the contents of As,
Sb, and Tl in the soil sample gathered from the site where Centaurea kavadarensis
Micev. samples were collected were much lower than in the soil samples from the
sites of the other two plant species (Bačeva et al. 2014a), and therefore the accumulation of these elements was much smaller in this plant than in the other species
from Allchar locality. Probably the reason for that is that the plant samples of the
other endemic species were taken in the area close to the mine or a hydrothermalmodified rock area, where the mineralization of As and Tl was predominant, and
2.500
2.000
1.500
Mass fraction, %
1.000
0.500
0.000
0.1MHCI
H 2 O
As Sb TI
DTPA
Fig. 13.9 Plant-available As, Sb, and Tl in 0.1 M HCl, H 2 O, and DTPA+TEA+CaCl 2 extraction
solutions of soil from locations where Centaurea samples were taken
13 Accumulation Abilities of Endemic Plant Species from the Vicinity of an As-Sb-Tl…
from 2.39 to 204 mg kg
−1
), then in the leaves (average value of 63.9 mg kg
−1
, ranges
from 1.59 to 210 mg kg
−1
) with the lowest average content in the stem (22.1 mg kg
−1
,
ranges from 0.55 to 91.5 mg kg
−1
). However, despite the high content of Sb in the
soil, the content of Sb in the plant was low (average content of 6.94 mg kg
−1
, ranges
from 0.25 to 58.2 mg kg
−1
), compared with the values for As and Tl in the same plants.
From the plant material that was analyzed, despite the As and Sb, special attention was given to the accumulation and transfer of Tl in different parts of the species
Centaurea leucomalla, and high bioaccumulation by the plants was found (average
content in the plant of 42.1 mg kg
−1
, ranges from 0.1 to 238 mg kg
−1
). The accumulation of Tl follows the behavior of As with its high content in all parts of the plant,
the highest in the root (86.3 mg kg
−1
, ranges from 10.3 to 238 mg kg
−1
) than in the
leaf (average of 22.5 mg kg
−1
, ranges from 0.1 to 75.2 mg kg
−1
) and the lowest in the
stem (average content of 17.4 mg kg
−1
, ranges from 1.86 to 69.1 mg kg
−1
).
13.3.3.2 Centaurea kavadarensis Micev.
From the results presented in Table 13.7, it can be noticed that the contents of As,
Sb, and Tl in the soil sample gathered from the site where Centaurea kavadarensis
Micev. samples were collected were much lower than in the soil samples from the
sites of the other two plant species (Bačeva et al. 2014a), and therefore the accumulation of these elements was much smaller in this plant than in the other species
from Allchar locality. Probably the reason for that is that the plant samples of the
other endemic species were taken in the area close to the mine or a hydrothermalmodified rock area, where the mineralization of As and Tl was predominant, and
2.500
2.000
1.500
Mass fraction, %
1.000
0.500
0.000
0.1MHCI
H 2 O
As Sb TI
DTPA
Fig. 13.9 Plant-available As, Sb, and Tl in 0.1 M HCl, H 2 O, and DTPA+TEA+CaCl 2 extraction
solutions of soil from locations where Centaurea samples were taken
13 Accumulation Abilities of Endemic Plant Species from the Vicinity of an As-Sb-Tl…