تعهد نامه
نوع مقاله : مقالات پژوهشی
عنوان مقاله English
نویسندگان English
Background and Purpose: Phytoremediation is a new technology for
remediation of contaminated soils, this study was conducted to evaluation
of efficiency of EDTA, citric acid and salicylic acid chelating agents in
phytoremediation enhancing of Amaranthus caudatus and Tagetes patula for
elimination of Cr(III) and Cu(II) from contaminated soils in 2018.
Material and Methods: After soil pots contaminating by 50 and 100 (mg/kg)
K2Cr2O7 and 200 and 400 (mg/kg) CuSO4 salts, and 2.5 (mmol/kg) of EDTA
and citric acid (CA) and 2.0 (mmol/kg) of salicylic acid (SA) solution treating,
the cultured seedlings were harvested after 60 days. Then, after seedlings
digestion, Cr and Cu contents were determined using ICP-OES
Results: Based on the results obtained, the maximum contents of Cr (mg/
kg) in cultivated soil, root and stem samples of A. caudatus were 2.40, 5.18
and 1.86 were found in the SA, EDTA and EDTA treatments, respectively and
in T. patula with 2.74, 6.00 and 1.30 were found to be in the SA, EDTA and
EDTA treatments, respectively. Also, the maximum contents of Cu (mg/kg)
in cultivated soil, root and stem samples of A. caudatus with 6.74, 3.77 and
3.34 were found to be in the SA, SA and EDTA treatments, respectively and
in T. patula with 6.65, 3.45 and 9.50 were found to be in the SA, EDTA and
EDTA treatments, respectively. On the other hand, translocation (TF) and
bioconcentration (BCF) factors of A. caudatus both were greater than 1 in
soils with 100 mg/kg added K2Cr2O7 containing CA, which indicates that this
species can be known as hyperaccumulator of Cr
Conclusion: In conclusion, concerning to the considerable role of organic acids
in soil refining electrokinetic and phytoremediation efficiency enhancing,
using of these soil amendment agents is recommended to cleanup of
contaminated soil with heavy metals
کلیدواژهها English
switchgrass of lead contaminated soil. Plants 2022;11:1012.