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Application of biochar to soils may result in plant contamination and human cancer risk due to exposure of polycyclic aromatic hydrocarbons
2018
Environment International
Biochars are added to soil to improve agronomic yield. This greenhouse-and field-scale study evaluated polycyclic aromatic hydrocarbon (PAH) contamination in 35 commercial and laboratory-produced biochars, and assessed the effects of biochar amendment of soils on PAH accumulation in vegetables and the risk for cancer. The total and bioavailable PAH concentrations in biochars varied from 638 to 12,347 μg/kg and from below the detection limit (BDL) to 2792 μg/kg, respectively. PAH formation in
doi:10.1016/j.envint.2018.09.010
pmid:30212761
fatcat:ljkq6c5y5ne3nl75jz4zuvmmnu