Production of PFOS from aerobic soil biotransformation of two perfluoroalkyl sulfonamide derivatives

Avendaño, Sandra Mejia; Liu, Jinxia

doi:10.1016/j.chemosphere.2014.09.059

Cited by 168 publications

(140 citation statements)

References 32 publications

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“…In summary, the observation that new peaks do not form in the presence of H. azteca further supports the general understanding that PFOS does not easily undergo biotransformation. [68]…”

Section: Fluorine ( 19 F)mentioning

confidence: 99%

In vivo comprehensive multiphase NMR

Mobarhan

Soong

Lane

et al. 2019

Magnetic Reson in Chemistry

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Traditionally, due to different hardware requirements, nuclear magnetic resonance (NMR) has developed as two separate fields: one dealing with solids, and one with solutions. Comprehensive multiphase (CMP) NMR combines all electronics and hardware (magic angle spinning [MAS], gradients, high power Radio Frequency (RF) handling, lock, susceptibility matching) into a universal probe that permits a comprehensive study of all phases (i.e., liquid, gel‐like, semisolid, and solid), in intact samples. When applied in vivo, it provides unique insight into the wide array of bonds in a living system from the most mobile liquids (blood, fluids) through gels (muscle, tissues) to the most rigid (exoskeleton, shell). In this tutorial, the practical aspects of in vivo CMP NMR are discussed including: handling the organisms, rotor preparation, sample spinning, water suppression, editing experiments, and finishes with a brief look at the potential of other heteronuclei (2H, 15N, 19F, 31P) for in vivo research. The tutorial is aimed as a general resource for researchers interested in developing and applying MAS‐based approaches to living organisms. Although the focus here is CMP NMR, many of the approaches can be adapted (or directly applied) using conventional high‐resolution magic angle spinning, and in some cases, even standard solid‐state NMR probes.

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“…In summary, the observation that new peaks do not form in the presence of H. azteca further supports the general understanding that PFOS does not easily undergo biotransformation. [68]…”

Section: Fluorine ( 19 F)mentioning

confidence: 99%

In vivo comprehensive multiphase NMR

Mobarhan

Soong

Lane

et al. 2019

Magnetic Reson in Chemistry

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“…So, they are often referred to as precursors and thus still represent a source of recalcitrant PFAAs in the environment ( Harding-Marjanovic et al. 2015 ; Mejia Avendaño and Liu 2015 ). Examples include fluorotelomer sulfonates, some of which are capable of transforming to PFOA ( Harding-Marjanovic et al.…”

Section: Introductionmentioning

confidence: 99%

Evaluation and Management Strategies for Per- and Polyfluoroalkyl Substances (PFASs) in Drinking Water Aquifers: Perspectives from Impacted U.S. Northeast Communities

Guelfo

Marlow

Klein

et al. 2018

Environ Health Perspect

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Background:Multiple Northeast U.S. communities have discovered per- and polyfluoroalkyl substances (PFASs) in drinking water aquifers in excess of health-based regulatory levels or advisories. Regional stakeholders (consultants, regulators, and others) need technical background and tools to mitigate risks associated with exposure to PFAS-affected groundwater.Objectives:The aim was to identify challenges faced by stakeholders to extend best practices to other regions experiencing PFAS releases and to establish a framework for research strategies and best management practices.Methods and Approach:Management challenges were identified during stakeholder engagement events connecting attendees with PFAS experts in focus areas, including fate/transport, toxicology, and regulation. Review of the literature provided perspective on challenges in all focus areas. Publicly available data were used to characterize sources of PFAS impacts in groundwater and conduct a geospatial case study of potential source locations relative to drinking water aquifers in Rhode Island.Discussion:Challenges in managing PFAS impacts in drinking water arise from the large number of relevant PFASs, unconsolidated information regarding sources, and limited studies on some PFASs. In particular, there is still considerable uncertainty regarding human health impacts of PFASs. Frameworks sequentially evaluating exposure, persistence, and treatability can prioritize PFASs for evaluation of potential human health impacts. A regional case study illustrates how risk-based, geospatial methods can help address knowledge gaps regarding potential sources of PFASs in drinking water aquifers and evaluate risk of exposure.Conclusion:Lessons learned from stakeholder engagement can assist in developing strategies for management of PFASs in other regions. However, current management practices primarily target a subset of PFASs for which in-depth studies are available. Exposure to less-studied, co-occurring PFASs remains largely unaddressed. Frameworks leveraging the current state of science can be applied toward accelerating this process and reducing exposure to total PFASs in drinking water, even as research regarding health effects continues. https://doi.org/10.1289/EHP2727

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“…The advent of unknown compound elucidation through high resolution mass spectrometry recently paved the way for the identification of a variety of zwitterionic and cationic PFASs (Place and Field, 2012;D'Agostino and Mabury, 2014). Although there is still limited data on the environmental occurrence, fate and effects of PFAS alternatives (Ahrens and Bundschuh, 2014;Hoke et al, 2015;Wang et al, 2015), it has been hypothesized that substitutes containing perfluoroalkyl or polyfluoroalkyl moieties may eventually degrade to recalcitrant forms such as PFCAs and PFSAs (Liu et al, 2010;Wang et al, 2011;Liu and Mejia Avendaño, 2013;Mejia Avendaño and Liu, 2015).…”

Section: Introductionmentioning

confidence: 99%

Analysis of zwitterionic, cationic, and anionic poly- and perfluoroalkyl surfactants in sediments by liquid chromatography polarity-switching electrospray ionization coupled to high resolution mass spectrometry

Munoz

Duy

Labadie

et al. 2016

Talanta

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A new analytical method is proposed for the determination of a wide span of fluoroalkylated surfactants (PFASs) of various chain lengths and polarities in sediments, including newly-identified compounds such as zwitterionic and cationic PFASs. Extraction conditions were optimized so as to maintain a common preparation procedure for all analytes (recovery range: 60-110%). Instrumental analysis was performed with ultra-high performance liquid chromatography coupled to Orbitrap mass spectrometry through polarity-switching electrospray ionization. Calibration curves with excellent coefficients of determination (R(2)>0.994) were generally obtained over 0.002-10ngg(-1) dry weight (dw) and limits of detection were in the range 0.0006-0.46 ng g(-1) dw. Intra-day precision remained<9% and inter-day precision<23%. While perfluorooctane sulfonate (PFOS) generally prevailed over other perfluoroalkyl acids (PFAAs) in sediments from mainland France, fluorotelomer sulfonamide amines and fluorotelomer sulfonamide betaines were also ubiquitous in these samples, especially in the vicinity of airports wherein firefighting training activities may occur on a regular basis.

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Production of PFOS from aerobic soil biotransformation of two perfluoroalkyl sulfonamide derivatives

Cited by 168 publications

References 32 publications

In vivo comprehensive multiphase NMR

In vivo comprehensive multiphase NMR

Evaluation and Management Strategies for Per- and Polyfluoroalkyl Substances (PFASs) in Drinking Water Aquifers: Perspectives from Impacted U.S. Northeast Communities

Analysis of zwitterionic, cationic, and anionic poly- and perfluoroalkyl surfactants in sediments by liquid chromatography polarity-switching electrospray ionization coupled to high resolution mass spectrometry

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