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Study on migration, transformation and the control technology of polycyclic aromatic hydrocarbons from soil to plant
Summary
Researchers investigated the migration of polycyclic aromatic hydrocarbons (PAHs) from contaminated soil into bok choy, and tested persulfate oxidation as an in-situ remediation approach, finding that treatment significantly reduced PAH uptake into edible plant tissue and lowered associated dietary exposure risk.
Soil polluted by polycyclic aromatic hydrocarbons (PAHs) is one of the environmental problems to be solved urgently.Brassica rapa subsp.chinensis (Bok choy), a globally consumed vegetable, holds particular significance in this scenario.Based on the use of persulfate (PS) oxidation technology, this study uses gas chromatography-mass spectrometry, scanning electron microscopy, X-ray diffractometer, Fourier transform infrared and other analysis methods.The migration of fluoranthene (FLN), phenanthrene (Phe), and pyrene (Pyr) from soil to Bok choy was studied, the transformation pathway of FLN, Phe and Pyr in soil was revealed.the effect of the removal of FLN, Phe, and Pyr by schwertmannite (sch) catalyze PS from wastewater was explored, clarified the effect of three synthesis methods on the removal of FLN, Phe, and Pyr by PS activated by sch.Finally, the effect and mechanism of Phe removal