Uptake of perfluoroalkyl substances and halogenated flame retardants by crop plants grown in biosolids-amended soils

The bioaccumulation behavior of perfluoroalkyl substances (PFASs) and halogenated flame retardants (HFRs) was examined in three horticultural crops and earthworms. Two species, spinach (Spinacia oleracea) and tomato (Solanum lycopersicum L.), were grown in field soil amended with a single application of biosolids (at agronomic rate for nitrogen), to represent the scenario using commercial biosolids as fertilizer, and the third crop, corn (Zea mays) was grown in spiked soil (~50 mg PFOS/kg soil, ~5 mg Deca-BDE/kg soil and a mixture of both, ~50 mg PFOS and ~5 mg Deca-BDE/kg soil) to represent a worst-case scenario. To examine the bioaccumulation in soil invertebrates, earthworms (Eisenia andrei) were exposed to the spiked soil where corn had been grown. PFASs and HFRs were detected in the three crops and earthworms. To evaluate the distribution of the compounds in the different plant tissues, transfer factors (TFs) were calculated, with TF values higher for PFASs than PBDEs in all crop plants from 2 to 9-fold in spinach, 2 to 34-fold in tomato and 11 to 309-fold in corn. Bioaccumulation factor (BAF) values in earthworms were also higher for PFASs (4.06±2.23) than PBDEs (0.02±0.02). © 2016 Elsevier Inc.

Bibliographic Details

Main Authors:	Navarro, I., De La Torre Reoyo, Ana Isabel, Sanz, P., Porcel Cots, Miguel Ángel, Carbonell, G., Martínez, M. D. L. Á, Pro González, Francisco José
Format:	journal article biblioteca
Language:	English
Published:	Elsevier 2017
Subjects:	Perfluoroalkyl substances, Polybrominated diphenyl ethers, Biosolid Transfer factors, Earthworm,
Online Access:	http://hdl.handle.net/20.500.12792/3103 http://hdl.handle.net/10261/294128
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