What's New In PFAS This Week
Matthew Von Hendy
Scientific Information Services │ Helping clients make critical business decisions by researching and organizing scientific and regulatory information │Historical Research Forensics │ Regulatory Information Services
First, a personal note from Matt--
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Three items of note--
1) I have been compiling/producing this newsletter and 'The Business of PFAS' as a service to the people interested in PFAS related research and issues. Twice a year I ask for a small donation to help for a bit of compensation for the time that goes into producing the newsletters. Please consider making a donation: https://www.paypal.com/donate/?hosted_button_id=7J5RE3Q3UD5V2 .
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2) I am going to speaking on Wednesday (tomorrow!) at 12 noon ET on Hemorrhoids or Hernias: PFAS Regulation for AGRO Members. The webinar will concentrate on the non-science factors which are driving PFAS regulation and how companies and suppliers can protect themselves by adopting a proactive approach to these regulations. Registration is free: Webinar Registration - Zoom
3) Finally, What's New In PFAS This Week will take a week long summer break next week. The next issue will come out around June 26th.
Onto the regular content...
Peer Reviewed Articles
In a typical week more than 200 peer reviewed PFAS related articles are published--below is a small sample of recent articles.
PFAS covers many different subject areas--ranging from wastewater treatment to law to fashion. If you need to find PFAS related research, get in touch with us at: [email protected]
Dahlbom, S., et al. (2024). "Analysis of perand poly fl uoroalkyl substances (PFAS) extraction from contaminated fi re fi ghting materials: Effects of cleaning agent, temperature, and chain-length dependencies." Emerging Contaminants 10(3).
This investigation delves into the extraction dynamics of 22 perand polyfluoroalkyl substances from PFAS contaminated firefighting materials. Two distinct test sets were executed: one contrasting a commercial product with water following an elaborate decontamination procedure, and the other assessing seven washing agents on materials from firefighting installations, with one agent examined at 22 degrees C and 50 degrees C.. (c) 2024 The Authors. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (https://creativecommons.org/licenses/by-nc-nd/ 4.0/).
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Feng, Y., et al. (2024). "Mitochondrial DNA copy number mediated the associations between perfluoroalkyl substances and breast cancer incidence: A prospective case-cohort study." Sci Total Environ 941: 173767.
Epidemiologic studies have reported the relationships between perfluoroalkyl substances (PFASs) and breast cancer incidence, yet the underlying mechanisms are not well understood. This study aimed to elucidate the mediation role of mitochondrial DNA copy number (mtDNAcn) in the relationships between PFASs exposure and breast cancer risk. We conducted a case-cohort study within the Dongfeng-Tongji cohort, involving 226 incident breast cancer cases and a random sub-cohort (n?=?990).
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Hu?ek, M., et al. (2024). "Removal of per- and polyfluoroalkyl substances and organic fluorine from sewage sludge and sea sand by pyrolysis." Biochar 6(1 C7 - 31).
Pyrolysis is one method for treating sewage sludge, particularly in remote areas or decentralised systems. The end product of pyrolysis, sludge-char, can serve as a soil improver. However, there is a lack of comprehensive data on the organic pollutants’ behaviour in sludge-char. In our work, we focused on the behaviour of per- and polyfluoroalkyl substances (PFASs).) ? The Author(s) 2024.
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Kabiri, S., et al. (2024). "Investigating hydrodynamic cavitation as an efficient means for removal of perand polyfluoroalkyl substances from solution." Separation and Purification Technology 347.
?With nearly five decades of per- and polyfluoroalkyl substances (PFASs) being associated with firefighting and industrial activities, these compounds inevitably accumulate in both ground and surface water. PFAS contamination in water has emerged as a significant environmental and public health concern, particularly perfluorooctanesulfonic acid (PFOS), which is often found in higher concentrations compared to other PFAS and has more pronounced adverse health effects.
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Kumaresan, A., et al. (2024). "Male infertility and Perfluoroalkyl and poly-fluoroalkyl substances: Evidence for alterations in phosphorylation of proteins and fertility-related functional attributes in bull spermatozoa." Biol Reprod.
BACKGROUND: Perfluoroalkyl and poly-fluoroalkyl substances (PFAS) are pervasive environmental pollutants and emerging risk factors for reproductive health. Although epidemiological evidence supports the link between these substances and male infertility, their specific effects on male fertility remain poorly understood. OBJECTIVES: Investigate the effect of perfluorooctane sulfonic acid (PFOS), the most prevalent and prominent PFAS, on bull sperm protein phosphorylation, a post-translational modification process governing sperm functionality and fertility.
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Leuthner, T. C., et al. (2024). "Structure-specific variation in per- and polyfluoroalkyl substances toxicity among genetically diverse Caenorhabditis elegans strains." bioRxiv.
BACKGROUND: There are >14,500 structurally diverse per- and polyfluoroalkyl substances (PFAS). Despite knowledge that these "forever chemicals" are in 99% of humans, mechanisms of toxicity and adverse health effects are incompletely known. Furthermore, the contribution of genetic variation to PFAS susceptibility and health consequences is unknown. OBJECTIVES: We determined the toxicity of a structurally distinct set of PFAS in twelve genetically diverse strains of the genetic model system Caenorhabditis elegans .
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Lucas, J. H., et al. (2024). "Developmental perfluorooctane sulfonic acid exposure exacerbates house dust mite induced allergic responses in adult mice." Sci Total Environ: 173768.
Perfluorooctane sulfonic acid (PFOS) is a long-chain per- and polyfluoroalkyl substance (PFAS), a persistent organic pollutant, which has been used in aqueous film-forming foams. Emerging epidemiological evidence indicates a significant body burden of PFOS is observed in the lungs. Furthermore, developmental PFOS exposure dysregulates lung development and exacerbates eosinophilic inflammation, which are critical risk factors for asthma.
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Molé, R. A., et al. (2024). "Groundwater solutes influence the adsorption of short-chain perfluoroalkyl acids (PFAA) to colloidal activated carbon and impact performance for in situ groundwater remediation." J Hazard Mater 474: 134746.
?Subsurface injection of colloidal activated carbon (CAC) is an in situ remediation strategy for perfluoroalkyl acids (PFAA), but the influence of groundwater solutes on longevity is uncertain, particularly for short-chain PFAA. We quantify the impact of inorganic anions, dissolved organic matter (DOM), and stabilizing polymer on PFAA adsorption to a commercial CAC.
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Singh, M., et al. (2024). "Modified competitive Langmuir model for prediction of multispecies PFAS competitive adsorption equilibria on colloidal activated carbon." Separation and Purification Technology 345.
Competitive adsorption of four perfluoroalkyl substances (PFAS), i.e., perfluorobutyl sulfonate (PFBS), perfluorohexane sulfonate (PFHxS), perfluorooctanoate (PFOA), and perfluorooctane sulfonate (PFOS), on colloidal activated carbon (CAC) was studied and a new predictive model, modified competitive Langmuir model (MCLM), was proposed to predict the competitive adsorption equilibria.
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Stockbridge, R. B. and L. P. Wackett (2024). "The link between ancient microbial fluoride resistance mechanisms and bioengineering organofluorine degradation or synthesis." Nature Communications 15(1 C7 - 4593).
Fluorinated organic chemicals, such as per- and polyfluorinated alkyl substances (PFAS) and fluorinated pesticides, are both broadly useful and unusually long-lived. To combat problems related to the accumulation of these compounds, microbial PFAS and organofluorine degradation and biosynthesis of less-fluorinated replacement chemicals are under intense study.. ? The Author(s) 2024.
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Verma, S., et al. (2024). "Photodegradation and photocatalysis of per- and polyfluoroalkyl substances (PFAS): A review of recent progress." Next Mater 2: 1-12.
Per- and polyfluoroalkyl substances (PFAS) are oxidatively recalcitrant organic synthetic compounds. PFAS are an exceptional group of chemicals that have significant physical characteristics due to the presence of the most electronegative element (i.e., fluorine). PFAS persist in the environment, bioaccumulate, and have been linked to toxicological impacts.
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Weidemann, E., et al. (2024). "Transformation, leaching and plant uptake simulations of 6:2 and 8:2 polyfluoroalkyl phosphate diesters (diPAPs) and related transformation products under near-natural conditions." Environmental Sciences Europe 36(1 C7 - 63).
领英推荐
In response to the growing concern over PFAS contamination, employing models to simulate PFAS behavior in the environment becomes necessary. This facilitates evaluating risks tied to leaching into groundwater, adsorption in soil, plant uptake, entry into the food chain, and the conversion of precursors into persistent PFAS. ? The Author(s) 2024.
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PFAS Federal Register/Federal Government
US EPA (6/8)
PFAS Weekly US State News
Brunswick County Public Utilities named as one of the largest utilities in the state to still have PFAS levels above national standards (wect.com)
PFAS Reports -- Other Sources
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Professional Geologist / Soil Scientist - B.F. Environmental Consultants @PACleanwater @KnowYourH2OPath
9 个月It is clear that a regulation was put into place before the economic impacts were evaluated and maybe this needs a roll back and we need to focus on the 80% exposure from consumer products to get the chemical out of our wastewater stream??
Scientific Information Services │ Helping clients make critical business decisions by researching and organizing scientific and regulatory information │Historical Research Forensics │ Regulatory Information Services
9 个月Alessandra LehmenMartha MaierYateen PargaonkarDale MullenJulie Bliss MullenMaria Flynn
Scientific Information Services │ Helping clients make critical business decisions by researching and organizing scientific and regulatory information │Historical Research Forensics │ Regulatory Information Services
9 个月Balaji VasudevanChris FrewMichael O'BrienAb BasuAlex PassiniMelissa Owen