Showing 61-75 of 139
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Investigation of common and unreported parabens alongside other plastic-related contaminants in human milk using non-targeted strategies
Science
6 Feb 2025 | Chemosphere
A study of human milk in Canada and South Africa detected multiple paraben-related contaminants, including restricted and uncommon ones, as well as a tire-related chemical, PFAS, and phthalate metabolites. The results emphasize the need to utilize non-target analysis as well as further research the usage, biotransformation, and potential toxicity of a number of contaminants.
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PFAS levels in 80% of Okayama townsfolk exceed U.S. guidelines
News
4 Feb 2025 | The Asahi Shimbun
More than 80 percent of Kibi-Chuo residents tested for cancer-causing organic fluorine compounds in their blood had levels exceeding U.S. guidelines, according to town officials.
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Emerging PFAS Exposure Is More Potent in Altering Childhood Lipid Levels Mediated by Mitochondrial DNA Copy Number
Science
3 Feb 2025 | Environ Sci Technol
Exposure to emerging PFAS, such as 6:2 Cl-PFESA, PFO4DA, and PFO5DoDA, is linked to higher triglycerides, total cholesterol, and low-density lipoproteins in Chinese children aged 7–10 years, suggesting an increased risk of metabolic disorders, including obesity, cardiovascular diseases, and diabetes.
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Per- and Poly-Fluoroalkyl Substances, and Organophosphate Flame Retardants in the Upper Yangtze River: Occurrence, Spatiotemporal Distribution, and Risk Assessment
Science
1 Feb 2025 | Toxics
PFAS and OPFRs were detected in the upper Yangtze River, with higher concentrations in the main stream than in tributaries, particularly near industrial and urban areas, and while ecological risks were generally low, some locations, especially near wastewater discharge sites, showed potential carcinogenic risks for adults due to OPFR exposure.
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Exploring the Chemical Complexity and Sources of Airborne Fine Particulate Matter in East Asia by Nontarget Analysis and Multivariate Modeling
Science
27 Jan 2025 | Environ Sci Technol
Airborne fine particulate matter (PM2.5) in East Asia contains thousands of complex organic and inorganic chemicals, including newly identified PFAS seasonal variations are influenced by temperature and air mass origins from China, the Korean Peninsula, and surrounding seas.
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Japan to make tougher standard permanent for PFAS in tap water
News
26 Dec 2024 | Star and Stripes
The Environment Ministry during an online experts meeting Tuesday agreed to adopt a target value of 50 nanograms per liter, or 50 parts per trillion, for PFOS and PFOA — components of PFAS, also known as “forever chemicals” — in its water quality standards.
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Per-and polyfluoroalkyl substances in paired serum and breastmilk samples among pregnant farmworkers in Thailand
Science
16 Dec 2024 | Int. J. Hyg. Environ. Health.
PFOS and PFNA were the most commonly detected PFAS in breastmilk from Thai farmworkers, with lactational transfer efficiencies up to 14.7%, highlighting a significant route of postnatal exposure for infants.
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Maternal Exposure to Per- and Polyfluoroalkyl Substances and Offspring Chromosomal Abnormalities: The Japan Environment and Children's Study
Science
11 Sep 2024 | Environ Health Perspect
Maternal exposure to certain PFAS chemicals, particularly PFOS, may be associated with an increased risk of chromosomal abnormalities in offspring, though further research is needed due to potential selection bias.
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Nontarget Analysis Combined with TOP Assay Reveals a Significant Portion of Unknown PFAS Precursors in Firefighting Foams Currently Used in China
Science
9 Sep 2024 | Environ. Sci. Technol.
Researchers identified 54 PFAS compounds, including seven novel ones, in Chinese firefighting foams, with some meeting persistence, bioaccumulation, and toxicity criteria, and advanced analysis revealed additional PFAS precursors that were previously undetected.
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Concentration and human health risk attribute to per-and polyfluoroalkyl substances in fillet of carp and tilapia fish: systematic review and meta-analysis
Science
22 Aug 2024 | J. Food Compos. Anal.
The meta-analysis revealed that PFAS concentrations are highest in tilapia (193.45 µg/kg) and carp (47.17 µg/kg) from China, with the highest non-carcinogenic risk from PFAS consumption for adults also observed in China; risk levels in other countries are notably lower, though ongoing monitoring is needed.
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Characterization of the Bioavailability of Per- and Polyfluoroalkyl Substances in Farmland Soils and the Factors Impacting Their Translocation to Edible Plant Tissues
Science
22 Aug 2024 | Environ Sci Technol
PFAS were detected in all crops from the Fen-Wei Plain, with higher accumulation in leafy vegetables and stronger bioavailability in soils with more dissolved organic carbon; plant tissue lipid and protein contents significantly influenced PFAS accumulation.
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Association between mixed exposure to per-and polyfluoroalkyl substances and metabolic syndrome in Korean adults: Data from the Korean National environmental health survey cycle 4
Science
1 Aug 2024 | Int. J. Hyg. Environ. Health
Exposure to multiple PFAS increases the risk of metabolic syndrome—a cluster of conditions including obesity, high blood pressure, high triglycerides, low HDL cholesterol, and high blood sugar—particularly in females, with significant contributions from PFNA.
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Combining Freshwater Irrigation with Vegetable Selection to Mitigate the Occurrence of Per-and Polyfluoroalkyl Substances in Edible Vegetable Parts in a Semiarid Farmland in Northwestern China
Science
2 Jul 2024 | ACS ES&T Water
Reclaimed-water irrigation can introduce PFAS into farmlands, but switching to freshwater irrigation reduces PFAS levels in vegetables, with carrots and potatoes accumulating fewer contaminants than cabbage and pak choi, highlighting the importance of cleaner irrigation water for growing nonleafy vegetables.
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Government instigates nationwide survey on PFAS in Japan's tap water
News
1 Jul 2024 | The Japan Times
Some 12,000 water providers have been given until the end of September to report on potential water contamination with PFAS, or perfluoroalkyl and polyfluoroalkyl substances — chemical compounds suspected to be carcinogenic. The request was made by the environment and infrastructure ministries on May 29.
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Okinawa report says PFAS could affect groundwater around US Marine base for decades
News
17 Jun 2024 | Keishi Koja
The prefecture’s Environmental Protection Division discovered PFAS above Japan’s provisional safe drinking water standard in 19 of 37 sites it sampled around Marine Corps Air Station Futenma between August and January, according to an annual report released by the division in April.