Negative role of biochars in the dissipation and vegetable uptake of polycyclic aromatic hydrocarbons (PAHs) in an agricultural soil: Cautions for application of biochars to remediate PAHs-contaminated soil

Autor: Fengsong Zhang, Guixiang Zhang, Xiaoyong Liao
Jazyk: angličtina
Rok vydání: 2021
Předmět:
Zdroj: Ecotoxicology and Environmental Safety, Vol 213, Iss , Pp 112075- (2021)
Druh dokumentu: article
ISSN: 0147-6513
DOI: 10.1016/j.ecoenv.2021.112075
Popis: Biochars were studied for their impacts on the dissipation and vegetable uptake of polycyclic aromatic hydrocarbons (PAHs) in an agricultural soil. The health risks of PAHs taken up by vegetables were assessed by growing Chinese cabbage in both unamended soil and biochar-amended soils. In the unamended soil, the total 16 PAHs (Σ16PAHs) content decreased by 77.38% after planting the vegetable. The dissipation percentages of low-molecular-weight PAHs (LMW-PAHs), medium-molecular-weight PAHs (MMW-PAHs), and high-molecular-weight PAHs (HMW-PAHs) were 82.37%, 72.65%, and 68.63%, respectively. A significant negative correlation was determined between the dissipation percentages of PAHs in soil and the logKow of PAHs (p
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