Perfluorooctanoic acid uptake in the mustard species Brassica juncea. Issue 1 (16th December 2022)

• Record Type: Journal Article
• Authors: Wattier, Bryanna D.; Gonzales, Annelise K.; Martinez, Nicole E.
• Is Part Of: Journal of Environmental Quality. Volume 52:Issue 1(2023)
• Page Start: 199
• Page End: 206
• Publication Date: 2022-12-16
• Subjects: Agricultural ecology -- Periodicals; Environmental engineering -- Periodicals; Pollution -- Periodicals; 630
• DOI: 10.1002/jeq2.20431
• Languages: English
• ISSNs: 0047-2425

Abstract

Abstract: Perfluorooctanoic acid (PFOA), a surfactant, is a member of the perfluoroalkyl acids (PFAAs) family and is a contaminant of emerging concern for human and environmental health. Perfluorooctanoic acid is a persistent organic pollutant, but currently little is known about (a) the potential ecological and toxicological effects of PFOA and (b) how PFOA moves in the environment. This study uses a radiotracer ( 14 C‐PFOA) to study the uptake and translocation of PFOA in hydroponically grown brown mustard [ Brassica juncea (L.) Czern.], a representative crop species. Plants were exposed in quadruplicate over the course of 7 d (with plants sampled on Days 4 and 7) to PFOA concentrations of 0, 1, 5, 10, and 15 mg L −1 . Uptake was quantified via liquid scintillation counting of samples from the nutrient solution, roots, stems, and leaves. Transfer factors (roots to shoots) ranged from 0.15 to 4.73 kg kg −1 . Bioconcentration factors (solution to plant) ranged from 0.36 to 62.29 L kg −1 . Factors were influenced by plant compartment, day sampled, and treatment level. Core Ideas: Bioconcentration (BCF) and transfer factors (TF) were determined for PFOA in brown mustard. Use of the radiotracer 14 C‐PFOA enabled convenient measurements of PFOA. BCF ranged from 0.36 to 62.29 L kg −1, and TF ranged from 0.15 to 4.73 kg kg −1 . BCF and TF were influenced by plant compartment, day sampled, and treatment level.