Author, as appears in the article.: Sánchez-Soberón F; Sutton R; Sedlak M; Yee D; Schuhmacher M; Park JS
Department: Enginyeria Química
URV's Author/s: SÁNCHEZ SOBERÓN, FRANCISCO / Schuhmacher Ansuategui, Marta
Keywords: Water Tokyo bay Temporal trends Sediment San francisco bay Polychlorinated-biphenyls Pfos Pfoa Perfluorooctane sulfonate pfos Perfluorochemicals Perfluoroalkyl substances Mass balance Long-term fate Fish Bioaccumulation Acids san francisco bay pfos pfoa mass balance fish
Abstract: © 2020 Elsevier Ltd We present a model to predict the long-term distribution and concentrations of perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS) in estuaries comprising multiple intercommunicated sub-embayments. To that end, a mass balance model including rate constants and time-varying water inputs was designed to calculate levels of these compounds in water and sediment for every sub-embayment. Subsequently, outflows and tidal water exchanges were used to interconnect the different regions of the estuary. To calculate plausible risks to population, outputs of the model were used as inputs in a previously designed model to simulate concentrations of PFOA and PFOS in a sport fish species (Cymatogaster aggregata). The performance of the model was evaluated by applying it to the specific case of San Francisco Bay, (California, USA), using 2009 sediment and water sampled concentrations of PFOA and PFOS in North, Central and South regions. Concentrations of these compounds in the Bay displayed exponential decreasing trends, but with different shapes depending on region, compound, and compartment assessed. Nearly stable PFOA concentrations were reached after 50 years, while PFOS needed close to 500 years to stabilize in sediment and fish. Afterwards, concentrations stabilize between 4 and 23 pg/g in sediment, between 0.02 and 44 pg/L in water, and between 7 and 104 pg/g wet weight in fish, depending on compound and region. South Bay had the greatest final concentrations of pollutants, regardless of compartment. Fish consumption is safe for most scenarios, but due to model uncertainty, limitations in monthly intake could be established for North and South Bay catches.
Thematic Areas: Zootecnia / recursos pesqueiros Saúde coletiva Química Public health, environmental and occupational health Pollution Odontología Nutrição Medicine (miscellaneous) Medicina veterinaria Medicina ii Medicina i Materiais Interdisciplinar Health, toxicology and mutagenesis Geociências General chemistry Farmacia Environmental sciences Environmental engineering Environmental chemistry Ensino Engenharias iii Engenharias ii Engenharias i Educação física Ciências biológicas iii Ciências biológicas ii Ciências biológicas i Ciências ambientais Ciências agrárias i Ciência de alimentos Chemistry (miscellaneous) Chemistry (all) Biotecnología Biodiversidade Astronomia / física
licence for use: https://creativecommons.org/licenses/by/3.0/es/
ISSN: 0045-6535
Author's mail: marta.schuhmacher@urv.cat
Author identifier: 0000-0003-4381-2490
Record's date: 2023-02-19
Journal volume: 252
Papper version: info:eu-repo/semantics/acceptedVersion
Link to the original source: https://www.sciencedirect.com/science/article/abs/pii/S0045653520306470?via%3Dihub
Papper original source: Chemosphere. 252 126454-
APA: Sánchez-Soberón F; Sutton R; Sedlak M; Yee D; Schuhmacher M; Park JS (2020). Multi-box mass balance model of PFOA and PFOS in different regions of San Francisco Bay. Chemosphere, 252(), 126454-. DOI: 10.1016/j.chemosphere.2020.126454
Licence document URL: https://repositori.urv.cat/ca/proteccio-de-dades/
Article's DOI: 10.1016/j.chemosphere.2020.126454
Entity: Universitat Rovira i Virgili
Journal publication year: 2020
Publication Type: Journal Publications