IRON OXIDE PARTICLES ASSISTED PHYTOREMEDIATION OF SOIL CONTAMINATED WITH CYPERMETHRIN RESIDUE
Abstract
- Cypermethrin is one of the most widely used pyrethroid insecticides against different pests, and its use causes soil contamination. The removal of 3-phenoxybenzoic acid (3-PBA), a secondary metabolite of cypermethrin, from contaminated soil by phytoremediation with four plants species: Peanut (Arachis hypogaea L.), Sesame (Sesamum indicum L.), Aster (Callistephus chinensis (L.) Nees) and Bermuda grass (Cynodon dactylon L. Pers.) was investigated in the absence and presence of iron oxide particles (0.01 g/kg of soil). The insecticide residue percent in the soil samples was determined by UV-Vis and GC-MS. The results showed that presence of iron oxide particles is important in the removal of cypermethrin. Good phytoremediation was demonstrated only by Aster and Bermuda grass (64.19 % and 96.7 % PBA removal) in 12 weeks period. Furthermore, the activities of soil urease (mg NH4 + -N g-1 soil h -1 ) and dehydrogenase (µg TPF g -1 soil h-1 ) also increased in the treated soil samples as determined by phenol-hypochlorite colorimetric method and Triphenyl Tetrazolium Chloride (TTC) assay method: Aster (4.45 ± 0.17) and Bermuda grass (4.68 ± 0.04) compared to uncultivated soil (S0) (3.74 ± 0.03), and (0.0017 ± 1.547 x 10-4 ) and (0.0016 ± 1.516 x 10-4 ) compared to S0 (0.0008 ± 0.424 x 10-4 ), respectively. The results demonstrated that Aster and Bermuda grass showed great promising potential as Phyto remediating agents.
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Year
- 2022
Author
-
Swe Sint
Subject
- Chemistry, Physics, Zoology, Botany and Marine Science, Geology
Publisher
- Myanmar Academy of Arts and Science (MAAS)