23 Jul Method for predicting bio-availability of polycyclic aromatic hydrocarbon in soil
Abstract
The invention discloses a method for predicting bio-availability of polycyclic aromatic hydrocarbon in soil and belongs to the technical field of soil pollution remediation. Polycaprolactone (PCL) is a tissue engineering biological membrane material, has certain toughness and high biocompatibility and is safe, non-toxic and readily available in raw materials. The PCL is first applied to a semi-permeable membrane passive sampling technology, a PCL membrane is synthesized by utilizing an electrostatic spinning method, and a PCL semi-permeable membrane passive sampling device (PCL-SPMD) is prepared and is applied to the soil for characterizing and predicting the bio-availability. Phenanthrene in water is enriched by the PCL-SPMD within 6 hours so as to reach a balance, the rate is high, and the capacity is high. Phenanthrene in the soil is enriched by the PCL-SPMD within 7 hours so as to reach a balance, the balance cycle is shortened, the prediction efficiency is improved, correlation between the PCL-SPMD enrichment concentration and the actual concentration in earthworm is obvious (R<2>=0.77, n=8), the actual concentration in earthworm can be estimated by employing the PCL-SPMD enrichment result in future, the bio-availability can be predicted, and a novel method is provided for predicting the bio-availability of the polycyclic aromatic hydrocarbon in the soil by adopting the semi-permeable membrane passive sampling technology.
Year: 2017
Country: CN
Doc No: 107219344