Article
Engineering, Environmental
Sandra Nilsson, Jack Thompson, Jochen F. Mueller, Jennifer Braeunig
Summary: The study aims to estimate the apparent half-lives of Cl-PFOS and PFOS isomers in firefighters following the end of exposure to 3M-AFFF, analyzing paired serum samples from 120 firefighters.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2022)
Article
Environmental Sciences
Fulgence Jacob Macha, Hyungjoon Im, Kyungtae Kim, Kyunghwa Park, Jeong-Eun Oh, Damia Barcelo
Summary: Cresols are commonly found in freshwater systems and are used as disinfectants. However, their long-term toxicity effects on reproduction and gene expression patterns of aquatic species are not well understood. This study aimed to investigate the chronic toxic effects of cresols on reproduction and gene expression using D. magna, and also examined the bioconcentration behavior of cresol isomers. The results showed that cresols had negative effects on offspring quantity and reproduction delay, but did not significantly affect body weight and gene transcription in Daphnia. The bioconcentration experiments indicated that cresol isomers are unlikely to accumulate in aquatic species.
SCIENCE OF THE TOTAL ENVIRONMENT
(2023)
Article
Environmental Sciences
Lilong Jiang, Yanjun Hong, Pingting Xiao, Xiaoxiao Wang, Jinghui Zhang, Ehu Liu, Huijun Li, Zongwei Cai
Summary: This study demonstrated the critical role of the fecal microbiota in PFOS-induced liver injury in mice and identified several critical bacteria that could protect against liver injury induced by PFOS in male and female mice.
ENVIRONMENTAL HEALTH PERSPECTIVES
(2022)
Article
Environmental Sciences
Ying Pan, Bei Wen, Hongna Zhang, Shuzhen Zhang
Summary: This study investigated the uptake, translocation, and phytotoxicity of PFOS and 6:2 Cl-PFESA in mung bean plants. Results showed that 6:2 Cl-PFESA is more harmful to mung beans than PFOS, with hydroxyl radicals being the mechanism of toxicity.
ENVIRONMENTAL POLLUTION
(2021)
Article
Environmental Sciences
Ling Chen, Yafeng Liu, Hongxin Mu, Huan Li, Su Liu, Mengyuan Zhu, Yuanqing Bu, Bing Wu
Summary: This study investigated the toxicity of low-dose PFBS on liver and compared it with PFOS. The results showed that PFBS exposure induced cell apoptosis and decreased CAT activities, while PFOS exposure led to accumulation of lipid droplets, increase of CAT activities, and TAG levels. Lipidomics analysis revealed similar global lipid changes in the two PFBS-treated groups, distinct from PFOS.
ENVIRONMENTAL POLLUTION
(2022)
Article
Environmental Sciences
Shu Yu, Wen-Ru Feng, Zi-Mian Liang, Xiao-Yun Zeng, Michael S. Bloom, Guo-Cheng Hu, Yang Zhou, Yan-Qiu Ou, Chu Chu, Qing-Qing Li, Yunjiang Yu, Xiao-Wen Zeng, Guang-Hui Dong
Summary: The study found that higher serum PFAS concentrations were associated with an increased risk of MetS, showing a significant dose-response trend, particularly impacting women.
ENVIRONMENTAL POLLUTION
(2021)
Article
Medicine, Research & Experimental
Dongmin Xu, Li Li, Leilei Tang, Ming Guo, Jie Yang
Summary: The results of this study demonstrated that exposure to 10 mg/kg PFOS induced cardiac toxicity in rats, which was associated with an increase in apoptosis and the expression of proinflammatory cytokines.
EXPERIMENTAL AND THERAPEUTIC MEDICINE
(2022)
Article
Engineering, Environmental
Zhuyu Sun, Chaojie Zhang, Jinchi Jiang, Jin Wen, Qi Zhou, Michael R. Hoffmann
Summary: A UV photoreductive system based on Fe(II)NTA is effective in decomposing PFOS at pH 8.0 under anoxic conditions, with degradation and defluorination efficiencies of around 60% and 29.5%, respectively. Laser flash photolysis and TDDFT calculations reveal a mechanism of UV-induced directional electron transfer from Fe(II)NTA to PFOS in a penta-coordinated metal-ligand complex.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Environmental Sciences
Chu Wang, Shujun Dong, Pu Wang, Yanfen Hao, Ruiguo Wang, Qinghua Zhang, Guibin Jiang
Summary: In this controlled feeding experiment, the toxicokinetics of polychlorinated dibenzo-p-dioxins/dibenzofurans (PCDD/Fs) in laying hens were investigated. The results showed that the levels of PCDD/Fs in the laying hens increased rapidly during the exposure period and then gradually decreased during the depletion period. The distribution of different congeners in the hens' tissues varied, and more lipophilic congeners were preferentially transferred to the eggs through maternal transfer.
SCIENCE OF THE TOTAL ENVIRONMENT
(2022)
Article
Environmental Sciences
Jongeun Rhee, Erikka Loftfield, Demetrius Albanes, Tracy M. Layne, Rachael Stolzenberg-Solomon, Linda M. Liao, Mary C. Playdon, Sonja I. Berndt, Joshua N. Sampson, Neal D. Freedman, Steven C. Moore, Mark P. Purdue
Summary: This study aimed to investigate the biological effects of PFOS and PFOA on the human body. Through metabolomic analysis, several metabolites associated with PFOS and PFOA were identified, with lipids and xenobiotics being the most common types. These findings provide insights into the potential hazards of PFOS and PFOA.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Engineering, Environmental
Wei-Rong Wang, Pei-Yao Chen, Jie Deng, Yu Chen, Hua-Ji Liu
Summary: This study successfully prepared CD hydrogels that efficiently adsorb PFOS through their CD moieties, demonstrating excellent adsorption performance and cycling stability. In practical wastewater treatment, CD hydrogels can effectively remove PFOS and meet environmental protection standards.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Engineering, Environmental
Liquan Chu, Chaojie Zhang, Pei Chen, Qi Zhou, Xuefei Zhou, Yalie Zhang
Summary: In this study, UV/KI system was used to decompose and defluorinate PFOS. It was found that the system can effectively promote PFOS decomposition and defluorination at a lower concentration of hydrated electron source chemicals and a wider pH range. The decomposition process followed a pseudo-first-order model, and the main products were environmentally friendly ions and acids.
JOURNAL OF WATER PROCESS ENGINEERING
(2022)
Review
Environmental Sciences
Zacharias Pandelides, Jennifer Arblaster, Jason Conder
Summary: This study reviews the toxicity benchmarks of perfluorooctane sulfonate (PFOS) on zebrafish and suggests that chronic effects on reproduction, growth, and lethality occur at concentrations higher than 0.7 μg/L. Therefore, higher screening levels should be used to develop PFOS aquatic life criteria.
ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY
(2023)
Article
Environmental Sciences
Samuel Krebsbach, Jianzhou He, Sushil Adhikari, Yaniv Olshansky, Farshad Feyzbar, Leonard C. Davis, Tae-Sik Oh, Dengjun Wang
Summary: Biochar is a cost-effective solution for removing per- and polyfluoroalkyl substances (PFAS) from water, but the specific physicochemical properties of biochars that determine their PFAS removal remain unknown. In this study, 15 biochars were produced from five feedstocks at three pyrolysis temperatures to investigate their removal efficiency of perfluorooctane sulfonate (PFOS), a type of PFAS, from water. It was found that biochar pore diameter was the most critical factor for PFOS removal, but other factors such as pore diameter/pore volume ratio, specific surface area, pyrolysis temperature, hydrophobicity, and elemental composition also played roles. Biochars with small pore diameter, low nitrogen content, and high pyrolysis temperature showed enhanced PFOS sorption. These findings contribute to the understanding of using biochars with optimized properties to remove PFAS compounds from water.
Article
Chemistry, Multidisciplinary
Sheng-Nan Lei, Huan Cong
Summary: Sensitive and selective sensors for detecting trace PFOS in water are crucial due to its harmful effects. This study developed a fluorescent sensor based on BowtieCyclophane, achieving successful detection of PFOS with visual fluorescence color changes.
CHINESE CHEMICAL LETTERS
(2022)
Article
Engineering, Environmental
Kyra M. Spaan, Bo Yuan, Merle M. Plassmann, Jonathan P. Benskin, Cynthia A. de Wit
Summary: The presence of a large number and diversity of organohalogen compounds (OHCs) in the environment presents a major challenge for analytical chemists. This study aimed to address this problem in municipal wastewater treatment plant (WWTP) sludge by quantifying the unidentified fraction of OHCs using targeted analyses and measurement of total and extractable (organo)halogen. The results revealed high levels of unidentified organofluorine and organobromine, and chlorinated paraffins were the dominant OHCs.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Agriculture, Multidisciplinary
Astrid Solvag Nesse, Agnieszka Jasinska, Aasim Musa Ali, Oskar Sandblom, Trine A. Sogn, Jonathan P. Benskin
Summary: The uptake of PFAS in mushrooms was investigated, and it was found that the accumulation was low and chain-length dependent. This is the first study of the uptake of emerging and ultra-short chain PFAS in mushrooms, and the results indicate very low accumulation.
JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY
(2023)
Article
Engineering, Environmental
Kyra M. Spaan, Fredric Seilitz, Merle M. Plassmann, Cynthia A. de Wit, Jonathan P. Benskin
Summary: Fluorine mass balance studies in municipal wastewater treatment plant (WWTP) sludge showed that conventional per- and polyfluoroalkyl substances (PFAS) account for only a small fraction (approximately 2%) of the extractable organic fluorine (EOF). The remaining EOF, which includes fluorine-containing pharmaceuticals and pesticides, was identified using high resolution mass spectrometry-based suspect screening. The presence of various pharmaceutical substances, pesticides, and conventional PFAS was confirmed, expanding the known EOF percentage from 2% to 27%. These findings highlight the importance of considering unconventional and non-PFAS organofluorine substances in addition to conventional PFAS when assessing the organofluorine mass balance in WWTP sludge.
ENVIRONMENTAL SCIENCE & TECHNOLOGY LETTERS
(2023)
Article
Ecology
Madeleine Starks, Christina M. Schaefer, Kenneth M. Jeffries, David Deslauriers, Kim Hoang Luong, Charles S. Wong, Mark L. Hanson, Charles W. Knapp
Summary: This study aimed to quantify antibiotic resistance genes (ARGs) in wastewater released from a treatment plant in Iqaluit, Canada, and found that the relative abundances of ARGs were significantly higher in wastewater than in the receiving environment. However, the presence of pharmaceuticals and personal care products (PPCPs) in the wastewater did not affect the receiving environment. Further research is needed to understand the impact and fate of antibiotic resistance and PPCPs in Arctic communities.
Article
Chemistry, Analytical
Helen Sepman, Louise Malm, Pilleriin Peets, Matthew MacLeod, Jonathan Martin, Magnus Breitholtz, Anneli Kruve
Summary: Nontarget analysis by LC-HRMS is widely used for detecting pollutants in the environment.
ANALYTICAL CHEMISTRY
(2023)
Article
Environmental Sciences
Anthony J. F. Reardon, Morteza Hajihosseini, Irina Dinu, Catherine J. Field, David W. Kinniburgh, Amy M. MacDonald, Deborah Dewey, Gillian England-Mason, Jonathan W. Martin, The APrON APrON Study
Summary: This study examined the association between prenatal exposure to PFAAs and child neurodevelopment. The findings suggest that certain PFAAs are associated with lower cognitive and language abilities. Specifically, total PFOS and its isomers were found to be related to lower language abilities. In conclusion, maternal exposure to PFAAs during pregnancy has adverse effects on child neurodevelopment.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Engineering, Environmental
Kalliroi Sdougkou, Hongyu Xie, Stefano Papazian, Beinilde Bonnefille, Ingvar A. Bergdahl, Jonathan W. Martin
Summary: Chemical exposomics in human plasma was enhanced by an optimized phospholipid removal step that increased targeted method sensitivity while also revealing >13,000 new molecular features by LC-HRMS non-targeted acquisition. The method validated a chemical exposomics protocol with an optimized phospholipid-removal step prior to targeted and non-targeted liquid chromatography high-resolution mass spectrometry. The method allows for the detection of a wide range of substances in human plasma, including previously undetectable ones, and can support large-scale studies of the exposome.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Lara Cioni, Merle Plassmann, Jonathan P. Benskin, Ana Carolina M. F. Coelho, Therese H. Nost, Charlotta Rylander, Vladimir Nikiforov, Torkjel M. Sandanger, Dorte Herzke
Summary: A comprehensive study on per- and polyfluoroalkyl substances (PFAS) in human serum samples was conducted, revealing that only a small fraction of PFAS are commonly monitored, which may lead to underestimation of human exposure. The study applied a fluorine mass balance approach and observed that total fluorine (TF) concentrations remained stable over time, while extractable organic fluorine (EOF) decreased. Furthermore, sex was found to influence the levels of unidentified EOF (UEOF) in a different way compared to target PFAS.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Engineering, Environmental
Rainer Lohmann, Branislav Vrana, Derek Muir, Foppe Smedes, Jaromir Sobotka, Eddy Y. Zeng, Lian-Jun Bao, Ian J. Allan, Peleg Astrahan, Ricardo O. Barra, Terry Bidleman, Evgen Dykyi, Nicolas Estoppey, Gilberto Fillmann, Naomi Greenwood, Paul A. Helm, Liisa Jantunen, Sarit Kaserzon, J. Vinicio Macias, Keith A. Maruya, Francisco Molina, Brent Newman, Raimon M. Prats, Manolis Tsapakis, Mats Tysklind, Barend L. van Drooge, Cameron J. Veal, Charles S. Wong
Summary: Persistent organic pollutants (POPs) are a global concern, but information on their trends in water has been missing. Passive samplers have emerged as an attractive alternative for monitoring POPs. Deployments of passive samplers at globally distributed sites showed variations in POPs concentrations, with some compounds displaying higher concentrations in specific regions. These results contribute to our understanding of the global distribution and transport of organic pollutants in aquatic systems.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Review
Chemistry, Analytical
Amanda Rensmo, Eleni K. Savvidou, Ian T. Cousins, Xianfeng Hu, Steffen Schellenberger, Jonathan P. Benskin
Summary: Recycling of lithium-ion batteries (LIBs) is vital for meeting the increasing demand for metals and achieving a sustainable circular economy. However, there is limited knowledge about the environmental risks associated with LIB recycling, particularly the emission of persistent fluorinated substances. This study provides an overview of the use of fluorinated substances in LIBs and highlights the potential formation and release of persistent fluorinated substances during the recycling process. It calls for further investigation and suggests the substitution of PFAS-based materials or changes in process conditions to prevent the formation and emission of persistent fluorinated substances.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2023)
Article
Environmental Sciences
Ian G. M. Gault, Chenxing Sun, Jonathan W. Martin
Summary: Oil sands process-affected water (OSPW) is a complex mixture of organics that has persistent toxicity. A full-scale test of aging OSPW in end-pit lakes and Base Mine Lake (BML) was carried out over 5 years. The toxicity of OSPW decreased with age due to dilution, but the toxic potency remained the same. Persistent toxicity was observed in aged OSPW, suggesting the need for active water treatment to accelerate detoxification.
Article
Chemistry, Analytical
Lisa Skedung, Eleni Savvidou, Steffen Schellenberger, Anders Reimann, Ian T. Cousins, Jonathan P. Benskin
Summary: In this study, the fluorine concentration in different consumer products on the Swedish market, which were suspected to contain fluorinated polymers, was determined. A qualitative pyrolysis-gas chromatography-mass spectrometry (pyr-GC/MS) method was validated to identify the structure of organic fluorine. The study revealed that some samples contained high levels of inorganic fluorine.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2023)
Article
Environmental Sciences
Yifeng Zhang, William Shotyk, Rick Pelletier, Claudio Zaccone, Tommy Noernberg, Gillian Mullan-Boudreau, Jonathan W. Martin
Summary: With industrial development in the Athabasca oil sands region (AOSR) in northern Alberta, the atmospheric deposition of polycyclic aromatic hydrocarbons (PAHs) has increased. The main source of PAHs to moss in the region is the deposition of particles from the atmosphere. PAH concentrations in the near-field AOSR sites were significantly higher than those in the far-field AOSR sites or reference sites in Alberta. The major sources of PAHs in the AOSR were estimated to be delayed petcoke and fine tailings. Dust control measures should be considered to protect human and environmental health, especially in the northern quadrant of the AOSR.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Chemistry, Analytical
Faiz Haque, Anne L. Soerensen, Martin Skold, Raed Awad, Kyra M. Spaan, Melanie Z. Lauria, Merle M. Plassmann, Jonathan P. Benskin
Summary: Temporal and spatial trends of 15 per- and polyfluoroalkyl substances (PFAS) were determined in white-tailed sea eagle (WTSE) eggs from Sweden between 1969 and 2021. PFAS concentrations generally increased until the 1990s-2010 and then plateaued or declined. Coastal populations had higher PFAS concentrations, possibly due to differences in diet and proximity to densely populated areas. Most extractable organofluorine in WTSE eggs consisted of known PFAS, with low levels of novel substances.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2023)
Article
Engineering, Environmental
Lara Cioni, Merle Plassmann, Jonathan P. Benskin, Ana Carolina M. F. Coelho, Therese H. Nost, Charlotta Rylander, Vladimir Nikiforov, Torkjel M. Sandanger, Dorte Herzke
Summary: This study used a comprehensive fluorine mass balance approach to analyze human serum samples collected over 28 years in Tromso, Norway, and found that human exposure to per- and polyfluoroalkyl substances (PFAS) may be underestimated.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)