Abstract
In this study, a soil microcosm experiment was carried out to investigate interactive effects of cadmium (Cd) and benzopyrene (B[a]P) in co-contaminated soil. Results demonstrate that a high level of Cd had an apparent inhibitory effect on the degradation and mineralization of B[a]P, and the concentration of desorbing B[a]P decreased with time. The desorbing fraction of B[a]P contributed more to the degradation of total B[a]P than the non-desorbing fraction did. No transformation of available fractions of B[a]P to bound-residue fraction was observed. The dissipation of available BaP in the soil was attributed predominantly to biodegradation. Cd speciation was not apparently altered by pyrene spiking. The addition of pyrene (250 mg/kg) improved B[a]P degradation.
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Funding
This work was supported by the Fundamental Research Funds for the Central Universities (2017XKQY070). The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.
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Chen, F., Luo, Z., Ma, J. et al. Interaction of Cadmium and Polycyclic Aromatic Hydrocarbons in Co-contaminated Soil. Water Air Soil Pollut 229, 114 (2018). https://doi.org/10.1007/s11270-018-3774-5
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DOI: https://doi.org/10.1007/s11270-018-3774-5