Sorption of perfluorooctane sulfonate (PFOS) on marine sediments

Chen, Hong; Zhang, Can; Yu, Yiyi; Han, Jianbo

doi:10.1016/j.marpolbul.2012.03.012

Cited by 94 publications

(47 citation statements)

References 21 publications

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“…Figure presents a summary of PFSA adsorption rates. The figure suggests a possible correlation between salinity and adsorption, consistent with the literature (Chen, Zhang, Yu & Han, ; Co‐Operation on Existing , 2002). The mass of PFAS absorbed may be associated with organic content.…”

Section: Resultssupporting

confidence: 89%

Evaluation of the effects of PFAS soil adsorption and transformation in the presence of divalent cations under ambient conditions

Eberle¹,

Edelman²,

Denly

et al. 2019

Remediation Journal

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A bench-scale study was conducted to evaluate the effect of divalent cations on the adsorption of perfluoroalkyl and polyfluoroalkyl substances (PFAS) onto soil particles.The study entailed batch testing of a synthetic soil mixture under a range of Epsom salt (soluble magnesium sulfate heptahydrate) concentrations. The synthetic soil was produced using a mix of sand, silt, clay, and organic matter that then was mixed and saturated with water collected from a PFAS-impacted water source. The results indicate that variable concentrations of magnesium (divalent cation) had a minor effect on the sorption of perfluorooctane sulfonate with the highest sorption occurring in the strongest solution of Epsom salt. An unanticipated result of the test involved apparent biomediated transformation of polyfluorinated alkylated sulfonates (fluorotelomers or FTS) to perfluorooctanoic acid, perfluoroheptanoic acid (PFHpA), and perfluorononanoic acid. We believe this is the first time the complete transformation of 6:2 FTS to PFHpA has been observed and reported under ambient surface water-like conditions within 6 months, a relatively short timeframe.

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Section: Resultssupporting

confidence: 89%

Evaluation of the effects of PFAS soil adsorption and transformation in the presence of divalent cations under ambient conditions

Eberle¹,

Edelman²,

Denly

et al. 2019

Remediation Journal

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“…The fate and transport of PFOS in the environment greatly depend on its adsorption on soil and sediment (Chen et al, 2012;Higgins and Luthy, 2006;Johnson et al, 2007;Ochoa-Herrera and Sierra-Alvarez, 2008). Soil and sediment are complicated matrices and generally composed of multiple complex components, which could be operationally defined as humin/kerogen, humic/fulvic acid (HA/FA), and inorganic component after chemical treatment (Mikutta et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Experimental and molecular dynamic simulation study of perfluorooctane sulfonate adsorption on soil and sediment components

Zhang

Yan

Jing

2015

Journal of Environmental Sciences

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Soil and sediment play a crucial role in the fate and transport of perfluorooctane sulfonate (PFOS) in the environment. However, the molecular mechanisms of major soil/sediment components on PFOS adsorption remain unclear. This study experimentally isolated three major components in soil/sediment: humin/kerogen, humic/fulvic acid (HA/FA), and inorganic component after removing organics, and explored their contributions to PFOS adsorption using batch adsorption experiments and molecular dynamic simulations. The results suggest that the humin/kerogen component dominated the PFOS adsorption due to its aliphatic features where hydrophobic effect and phase transfer are the primary adsorption mechanism.Compared with the humin/kerogen, the HA/FA component contributed less to the PFOS adsorption because of its hydrophilic and polar characteristics. The electrostatic repulsion between the polar groups of HA/FA and PFOS anions was attributable to the reduced PFOS adsorption. When the soil organic matter was extracted, the inorganic component also plays a non-negligible role because PFOS molecules might form surface complexes on SiO 2 surface.The findings obtained in this study illustrate the contribution of organic matters in soils and sediments to PFOS adsorption and provided new perspective to understanding the adsorption process of PFOS on micro-interface in the environment.

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“…It has been identified in various environmental sectors, including air [2], sewage sludge [3], [4], snow, lake, and surface runoff water [5]. PFOS is also commonly detected in maternal serum, amniotic fluid [6], umbilical cord blood [7], breast milk [8], nail, hair and urine [9] and semen [10].…”

Section: Introductionmentioning

confidence: 99%

Perfluorooctane Sulfonate Disturbs Nanog Expression through miR-490-3p in Mouse Embryonic Stem Cells

Chen

Mao

et al. 2013

PLoS ONE

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Perfluorooctane sulfonate (PFOS) poses potential risks to reproduction and development. Mouse embryonic stem cells (mESCs) are ideal models for developmental toxicity testing of environmental contaminants in vitro. However, the mechanism by which PFOS affects early embryonic development is still unclear. In this study, mESCs were exposed to PFOS for 24 h, and then general cytotoxicity and pluripotency were evaluated. MTT assay showed that neither PFOS (0.2 µM, 2 µM, 20 µM, and 200 µM) nor control medium (0.1% DMSO) treatments affected cell viability. Furthermore, there were no significant differences in cell cycle and apoptosis between the PFOS treatment and control groups. However, we found that the mRNA and protein levels of pluripotency markers (Sox2, Nanog) in mESCs were significantly decreased following exposure to PFOS for 24 h, while there were no significant changes in the mRNA and protein levels of Oct4. Accordingly, the expression levels of miR-145 and miR-490-3p, which can regulate Sox2 and Nanog expressions were significantly increased. Chrm2, the host gene of miR-490-3p, was positively associated with miR-490-3p expression after PFOS exposure. Dual luciferase reporter assay suggests that miR-490-3p directly targets Nanog. These results suggest that PFOS can disturb the expression of pluripotency factors in mESCs, while miR-145 and miR-490-3p play key roles in modulating this effect.

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Sorption of perfluorooctane sulfonate (PFOS) on marine sediments

Cited by 94 publications

References 21 publications

Evaluation of the effects of PFAS soil adsorption and transformation in the presence of divalent cations under ambient conditions

Evaluation of the effects of PFAS soil adsorption and transformation in the presence of divalent cations under ambient conditions

Experimental and molecular dynamic simulation study of perfluorooctane sulfonate adsorption on soil and sediment components

Perfluorooctane Sulfonate Disturbs Nanog Expression through miR-490-3p in Mouse Embryonic Stem Cells

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