Uptake of metals and metalloids by Conyza canadensis L. from a thermoelectric power plant landfill
Fourteen metals and metalloids were determined in Conyza canadensis L. harvested from the fly ash landfill of the thermoelectric power plant “Kolubara” (Serbia). Fly ash samples were collected together with the plant samples and subjected to sequential extraction according to the three-step...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
University of Belgrade, University of Novi Sad
2016-01-01
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| Series: | Archives of Biological Sciences |
| Subjects: | |
| Online Access: | http://www.doiserbia.nb.rs/img/doi/0354-4664/2016/0354-46641600071V.pdf |
| Summary: | Fourteen metals and metalloids were determined in Conyza canadensis L.
harvested from the fly ash landfill of the thermoelectric power plant
“Kolubara” (Serbia). Fly ash samples were collected together with the plant
samples and subjected to sequential extraction according to the three-step
sequential extraction scheme proposed by the Community Bureau of Reference
(BCR; now the Standards, Measurements and Testing Program). The contents of
metals and metalloids were determined by inductively coupled plasma optical
emission spectrometry (ICP-OES) in plant root and the aboveground part and
correlated with their contents in the fly ash samples. The bioconcentration
factor (BCF) and translocation factors (TF) were calculated to access uptake
of metals from fly ash and their translocation to the aboveground part.
Results regarding As revealed that fly ash samples in the proximity of the
active cassette had higher amounts of the element. Principal component
analysis (PCA) showed that As had no impact on the classification of plant
parts. BCF for As ranged from 1.44 to 23.8 and varied, depending on the
investigated area; TF for As ranged from 0.43 to 2.61, indicating that the
plant translocated As from root to shoot. In addition to As, Conyza
canadensis L. exhibited efficient uptake of other metals from fly ash.
According to the calculated BCF and TF, the plant retained Al, Fe and Cr in
the root and translocated Zn, Cd, Cu and As from root to shoot in the course
of the detoxifying process. [Projekat Ministarstva nauke Republike Srbije,
br. 172030 i br. 172017] |
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| ISSN: | 0354-4664 1821-4339 |