Article
Chemistry, Multidisciplinary
Yanlei He, Dan Luo, Vincent M. Lynch, Mehroz Ahmed, Jonathan L. Sessler, Xiaodong Chi
Summary: Researchers have developed a porous adaptive luminescent zinc-metallacage crystal that can detect and remove PFCAs from water with high sensitivity. A smartphone with a color scanning application allows for real-time visual detection of PFCAs at low concentrations. The porous adaptive Zn-Cage also efficiently removes representative PFCAs from contaminated water samples.
Article
Environmental Sciences
Ana Carolina M. F. Coelho, Lara Cioni, Wendy Van Dreunen, Vivian Berg, Charlotta Rylander, Ilona Urbarova, Dorte Herzke, Torkjel M. Sandanger
Summary: This study assessed the indirect contribution of oxidizable PFAA precursors and discovered that it accounted for 12% of the total PFAS burden. Several unknown PFAA precursors were also identified, and factors associated with their increased concentrations were found.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Environmental Sciences
Lara Cioni, Vladimir Nikiforov, Ana Carolina M. F. Coelho, Torkjel M. Sandanger, Dorte Herzke
Summary: This article introduces a method for analyzing overlooked oxidizable precursors in human serum. The method involves the oxidation of precursors to perfluoroalkyl acids (PFAA) to assess undetected PFAS precursors in human serum. After optimization, the method can provide indications for high-throughput screening of undetected PFAA precursors in human serum.
ENVIRONMENT INTERNATIONAL
(2022)
Review
Food Science & Technology
Arabela Ramirez Carnero, Antia Lestido-Cardama, Patricia Vazquez Loureiro, Letricia Barbosa-Pereira, Ana Rodriguez Bernaldo de Quiros, Raquel Sendon
Summary: Research has shown that various perfluoroalkyl and polyfluoroalkyl compounds are present in fast food packaging, microwave popcorn bags, and frying pans, among other products. It also reveals the conditions or factors that promote the migration of PFAS from FCM into the food.
Article
Environmental Sciences
Katsumi Iwabuchi, Itaru Sato
Summary: The study demonstrates that household water purifiers are effective in reducing exposure to PFASs through drinking water, with removal efficiency varying between different models. Model C was the most effective, while Model D was the least effective. Additionally, the removal efficiency differed based on the carbon chain length of PFASs.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2021)
Article
Pharmacology & Pharmacy
E. Piva, A. Giorgetti, P. Ioime, L. Morini, F. Freni, F. Lo Faro, F. Pirani, M. Montisci, P. Fais, J. P. Pascali
Summary: There are geographical differences in the presence and prevalence of PFAS in the hair of the Italian population, with hair analysis being a useful tool for assessing PFAS exposure on a regional scale. However, no significant differences in the amount of PFAS were observed based on gender or age groups.
Article
Acoustics
Takshak Shende, Gangadhar Andaluri, Rominder Suri
Summary: The power density affects the dynamics of chemical reactions during ultrasonic degradation, with higher power density leading to faster degradation of PFOA and PFOS. Additionally, the addition of oxidants and increasing water temperature can enhance the degradation process.
ULTRASONICS SONOCHEMISTRY
(2021)
Article
Environmental Sciences
Anh Quoc Hoang, Thi Lieu Tran, Le Huu Tuyen, Thi Anh Huong Nguyen, Dang Minh Pham, Thi Chuc Nguyen, Trong Nghia Nguyen, Dinh Quang Phan, Manh Khai Nguyen, Van Quy Tran, Chau Thuy Pham, Quang Do Bui, Thi Quynh Hoa Nguyen
Summary: This study provides information on the presence of per- and polyfluoroalkyl substances (PFASs) in food packaging materials from Vietnamese markets, revealing relatively high levels of PFASs in some samples, mainly long-chain PFASs. The study also highlights the inadequate database currently available to determine trends in PFAS concentrations and profiles in food contact materials (FCMs) across continents and countries.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Engineering, Chemical
Nathan H. Weber, Sebastian P. Stockenhuber, Cameron S. Delva, Ammar Abu Fara, Charles C. Grimison, John A. Lucas, John C. Mackie, Michael Stockenhuber, Eric M. Kennedy
Summary: The kinetics of pyrolysis of PFOS in inert bath gases were studied in two flow reactors made of alpha-alumina and stainless steel, showing that PFOS decomposes by first eliminating HF to form an unstable sultone, followed by rapid liberation of SO2 and formation of perfluorooctanoyl fluoride. The rate constant for the formation of HF and SO2 was found to be k(1) = (1.3 +/- 0.5) x 10(14) exp(-253 +/- 5 kJ/mol/RT) s(-1) in the stainless steel reactor.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Chemistry, Analytical
Hildo Krop, Christian Eschauzier, Els van der Roest, John R. Parsons, Pim de Voogt
Summary: The study investigated the adsorption performance of a series of unbranched perfluoralkylacids with different sorbents. The results showed that the anionic exchange sorbent had higher affinity for PFBA than the hydrophobic sorbent, while the adsorption of PFAAs to Al2O3 was weak and chain length independent. The recently developed independent mode (IM) model combining electrostatic and hydrophobic interaction terms accurately predicted the behavior of short chain PFAAs.
ENVIRONMENTAL SCIENCE-PROCESSES & IMPACTS
(2021)
Article
Engineering, Chemical
Takshak Shende, Gangadhar Andaluri, Rominder Suri
Summary: The study found that the decomposition rate of PFOA and PFOS increases in air compared to reported results, and the degradation rate of PFOA in gases follows the order Helium > Nitrogen > Argon > Oxygen > Ozone. The presence of known/unknown chemical compounds formed during sonolysis was found to influence the interaction of PFOA and PFOS with the cavity-water interface.
SEPARATION AND PURIFICATION TECHNOLOGY
(2021)
Article
Engineering, Environmental
Derek Muir, Luc T. Miaz
Summary: PFAS, specifically PFCAs and PFSAs, have been widely detected in global surface waters since the early 2000s. The majority of measurements come from coastal seas in Western Europe, China, Korea, and Japan, with highest median concentrations reported in China's Bohai and Yellow Seas region as well as Europe's North and Baltic seas. Significant declines in median PFSAs and C7-C12 PFCAs were observed in the period 2012-2018 in these regions, and for 2004-2017 in the Great Lakes. Mass discharge estimates indicate continued substantial riverine emissions of long chain PFCAs in the coastal seas of China and reductions in emissions for Western European rivers compared to earlier time periods.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Environmental Sciences
Nguyen Thi Quynh Hoa, Tran Thi Lieu, Hoang Quoc Anh, Nguyen Thi Anh Huong, Nguyen Trong Nghia, Nguyen Thi Chuc, Phan Dinh Quang, Phung Thi Vi, Le Huu Tuyen
Summary: The concentrations and profiles of 17 PFAS were analyzed in freshwater fish samples from West Lake and Yen So Lake in Vietnam. The study found that PFAS concentrations were higher in fish blood samples, and liver samples had significantly higher levels compared to muscle samples. The majority of PFAS were found in muscle and blood, with individual compounds contributing to the overall burden to varying degrees. The most common PFAS substances were PFOS and PFA with chain lengths from C10 to C14. There were no significant differences in PFAS concentrations between different fish species, although common carp showed specific PFAS profiles compared to other species.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Environmental Sciences
Greg W. Curtzwiler, Paulo Silva, Alexander Hall, Alexandra Ivey, Keith Vorst
Summary: Food safety authorities and the food industry are paying attention to the uses of PFAS in food packaging, with a focus on distinguishing between different sources of PFAS to meet regulatory requirements.
INTEGRATED ENVIRONMENTAL ASSESSMENT AND MANAGEMENT
(2021)
Article
Environmental Sciences
Geraldo Neto, Martin Bobak, Juan P. Gonzalez-Rivas, Jana Klanova
Summary: This study examines the association between PFAS and depression, finding a significant association between PFOA and depression in the overall sample, and significant associations between PFNA and PFDA and depression in the group with normal body fat status. Further research should investigate the role of obesity and possible mechanisms linking PFAS to depression.
Article
Biochemical Research Methods
Hongkai Zhu, Sridhar Chinthakindi, Kurunthachalam Kannan
Summary: The study introduces a method for monitoring 121 environmental chemicals in urine samples using solid-phase extraction (SPE) coupled with liquid chromatography-tandem mass spectrometry (LC-MS/MS). The optimized method showed excellent variability, satisfactory recoveries, and high detection limits for a wide range of analytes. This validated method was successfully applied to the simultaneous determination of environmental chemicals in real urine samples.
JOURNAL OF CHROMATOGRAPHY A
(2021)
