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Sulfluramid use in Brazilian agriculture: A source of per- and polyfluoroalkyl substances (PFASs) to the environment.
Environ Pollut. 2018 Nov; 242(Pt B):1436-1443.EP

Abstract

N-Ethyl perfluorooctane sulfonamide (EtFOSA) is a perfluorooctane sulfonate (PFOS) precursor and the active ingredient in sulfluramid, a pesticide which is used extensively in Brazil for management of leaf cutting ants. Here we investigate the occurrence of EtFOSA, PFOS, and other per- and polyfluoroalkyl substances (PFASs) in soil, eucalyptus leaves, water (ground, riverine, and coastal (estuarine/marine)) and coastal sediment from an agricultural region of Bahia State, Brazil. This area contains a larger number of eucalyptus plantations where sulfluramid is suspected to be applied. Soil, leaves, and coastal water (marine/estuarine) contained ∑PFAS concentrations of up to 5400 pg g-1, 979 pg g-1, and 1020 pg L-1, respectively, with PFAS profiles generally dominated by PFOS and perfluorooctane sulfonamide (FOSA). Coastal sediment contained ∑PFAS concentrations of up to 198 pg g-1, with PFOS, FOSA, and perfluorooctanoic acid (PFOA) being the most frequently observed PFASs. These substances are all potential EtFOSA transformation products, pointing to sulfluramid as a possible source. In riverine water, ∑PFAS concentrations of up to 8930 pg L-1 were observed. PFOS and PFOA were detected in all river water samples. Groundwater also exhibited PFAS contamination (5730 pg L-1 ∑PFASs), likely from sulfluramid use. The observation of other PFASs (e.g. perfluorobutanoic acid) in freshwater suggests that other PFAS sources (in addition to sulfluramid) may be important in this region. Overall, these data support the hypothesis that sulfluramid use contributes to the occurrence of PFASs in the Brazilian environment.

Authors+Show Affiliations

Department of Oceanography, Federal University of Bahia, 41170-110, Salvador, BA, Brazil.Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Stockholm, Sweden.Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Stockholm, Sweden.Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Stockholm, Sweden.Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Stockholm, Sweden; Department of Analytical Chemistry, Faculty of Science and Technology, University of the Basque Country (UPV/EHU), Bilbao, Spain.Department of Environmental Science and Analytical Chemistry (ACES), Stockholm University, Stockholm, Sweden.Geophysics and Geology Research Center, Federal University of Bahia, 41170-110, Salvador, BA, Brazil.Laboratory of Chemical Oceanography, Federal University of Santa Catarina, 88040-900, Florianópolis, SC, Brazil. Electronic address: juoceano@gmail.com.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

30142559

Citation

Nascimento, Rodrigo A., et al. "Sulfluramid Use in Brazilian Agriculture: a Source of Per- and Polyfluoroalkyl Substances (PFASs) to the Environment." Environmental Pollution (Barking, Essex : 1987), vol. 242, no. Pt B, 2018, pp. 1436-1443.
Nascimento RA, Nunoo DBO, Bizkarguenaga E, et al. Sulfluramid use in Brazilian agriculture: A source of per- and polyfluoroalkyl substances (PFASs) to the environment. Environ Pollut. 2018;242(Pt B):1436-1443.
Nascimento, R. A., Nunoo, D. B. O., Bizkarguenaga, E., Schultes, L., Zabaleta, I., Benskin, J. P., Spanó, S., & Leonel, J. (2018). Sulfluramid use in Brazilian agriculture: A source of per- and polyfluoroalkyl substances (PFASs) to the environment. Environmental Pollution (Barking, Essex : 1987), 242(Pt B), 1436-1443. https://doi.org/10.1016/j.envpol.2018.07.122
Nascimento RA, et al. Sulfluramid Use in Brazilian Agriculture: a Source of Per- and Polyfluoroalkyl Substances (PFASs) to the Environment. Environ Pollut. 2018;242(Pt B):1436-1443. PubMed PMID: 30142559.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sulfluramid use in Brazilian agriculture: A source of per- and polyfluoroalkyl substances (PFASs) to the environment. AU - Nascimento,Rodrigo A, AU - Nunoo,Deborah B O, AU - Bizkarguenaga,Ekhine, AU - Schultes,Lara, AU - Zabaleta,Itsaso, AU - Benskin,Jonathan P, AU - Spanó,Saulo, AU - Leonel,Juliana, Y1 - 2018/08/01/ PY - 2018/03/19/received PY - 2018/06/29/revised PY - 2018/07/27/accepted PY - 2018/8/25/pubmed PY - 2018/11/15/medline PY - 2018/8/25/entrez KW - Brazil KW - Per- and polyfluoroalkyl substances (PFASs) KW - Perfluorooctane sulfonate (PFOS) KW - Sulfluramid SP - 1436 EP - 1443 JF - Environmental pollution (Barking, Essex : 1987) JO - Environ. Pollut. VL - 242 IS - Pt B N2 - N-Ethyl perfluorooctane sulfonamide (EtFOSA) is a perfluorooctane sulfonate (PFOS) precursor and the active ingredient in sulfluramid, a pesticide which is used extensively in Brazil for management of leaf cutting ants. Here we investigate the occurrence of EtFOSA, PFOS, and other per- and polyfluoroalkyl substances (PFASs) in soil, eucalyptus leaves, water (ground, riverine, and coastal (estuarine/marine)) and coastal sediment from an agricultural region of Bahia State, Brazil. This area contains a larger number of eucalyptus plantations where sulfluramid is suspected to be applied. Soil, leaves, and coastal water (marine/estuarine) contained ∑PFAS concentrations of up to 5400 pg g-1, 979 pg g-1, and 1020 pg L-1, respectively, with PFAS profiles generally dominated by PFOS and perfluorooctane sulfonamide (FOSA). Coastal sediment contained ∑PFAS concentrations of up to 198 pg g-1, with PFOS, FOSA, and perfluorooctanoic acid (PFOA) being the most frequently observed PFASs. These substances are all potential EtFOSA transformation products, pointing to sulfluramid as a possible source. In riverine water, ∑PFAS concentrations of up to 8930 pg L-1 were observed. PFOS and PFOA were detected in all river water samples. Groundwater also exhibited PFAS contamination (5730 pg L-1 ∑PFASs), likely from sulfluramid use. The observation of other PFASs (e.g. perfluorobutanoic acid) in freshwater suggests that other PFAS sources (in addition to sulfluramid) may be important in this region. Overall, these data support the hypothesis that sulfluramid use contributes to the occurrence of PFASs in the Brazilian environment. SN - 1873-6424 UR - https://www.unboundmedicine.com/medline/citation/30142559/Sulfluramid_use_in_Brazilian_agriculture:_A_source_of_per__and_polyfluoroalkyl_substances__PFASs__to_the_environment_ L2 - https://linkinghub.elsevier.com/retrieve/pii/S0269-7491(18)31177-1 DB - PRIME DP - Unbound Medicine ER -