388
tion on the actual availability of elements from the soil solution (Pansu and
Gautheyrou 2006). Also, the extraction that use sequestering reagents is widely
used for selective solubilization by chelate formation, often in combination with
other reagents acting by ion exchange, redox, or acid action. The most widely used
sequestering reagents for the estimation of the extraction of trace elements include
Table 13.2 The content of As, Sb, and Tl in soil samples from the locations where Viola species
were collected (in mg kg
−1
)
Element
Average
Median
Min.
Max.
As
5464
5875
86
12,775
Sb
47
37
21
116
Tl
595
431
14
2140
Fig. 13.6 (a) Extraction for plant-available As, Sb, and Tl in H 2 O. (b) Extraction for plantavailable As, Sb, and Tl in 0.1 M HCl. (c) Extraction for plant-available As, Sb, and Tl in DTPATEA- CaCl 2 extraction solutions
K. B. Andonovska et al.
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