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PFAS contamination in tap water: Target and suspect screening of zwitterionic, cationic, and anionic species across Canada and beyond.
Environ Int
January 2025
Département de Chimie, Université de Montréal, Montreal, QC, Canada. Electronic address:
This study investigated the occurrence of perfluoroalkyl and polyfluoroalkyl substances (PFAS), including anionic, cationic, and zwitterionic compounds, in drinking water. Between 2021-2023, an expanded list of 76 target PFAS was screened in tap water samples mainly from Canada, but also including tap water samples from the Eastern United States, Mexico, South America (Argentina), the Caribbean (Dominican Republic, Cuba), Africa (Algeria, Cameroon, Central African Republic, Morocco, Rwanda, Tunisia), Europe (France, Greece, Italy, Spain, and the United Kingdom) and Asia (Japan, Vietnam, Iran, and Türkiye). An additional ∼ 200 suspect-target PFAS were screened using high-resolution Orbitrap mass spectrometry.
View Article and Find Full Text PDFLithium: current state of the art and future directions.
Int J Bipolar Disord
November 2024
Department of Psychiatry, Carl Gustav Carus University Hospital, Medical Faculty, Technische Universität Dresden, Dresden, Germany.
Background: Lithium is our oldest continuously prescribed medication in psychopharmacology, with its history as an agent for treating mood disorders extending from the 19th century. Although clinicians prescribe it less frequently than in the past, its utility in treating bipolar disorder is unquestionable. Novel potential indications for its use in psychiatry have created excitement about broader roles for lithium in treating and preventing other disorders.
View Article and Find Full Text PDFDevelopment of a green-synthesized molecularly imprinted polymer-based electrochemical nanosensor for the determination of N-nitrosodimethylamine (NDMA) in serum and tap water.
Mikrochim Acta
November 2024
Department of Analytical Chemistry, Faculty of Pharmacy, Ankara University, Ankara, Turkey.
N-nitrosodimethylamine (NDMA) was determined using a molecularly imprinted polymer (MIP)-based electrochemical sensor. Green-synthesized silver nanoparticles were functionalized with cysteamine to enhance their integration into the electrode surface, which was used to modify a glassy carbon electrode (GCE). Furthermore, a MIP-based electrochemical sensor was constructed via electropolymerization of 3-aminophenyl boronic acid (3-APBA) as a conjugated functional monomer in the presence of lithium perchlorate (LiClO) solution as a dopant, chitosan as a carrier natural polymer, and NDMA as a template/target molecule.
View Article and Find Full Text PDFTrace Element Composition of Surface Water in Almaty City and Human Health Risk Assessment.
Int J Environ Res Public Health
November 2024
Institute of Nuclear Physics, Ibragimov 1, Almaty 050032, Kazakhstan.
This investigation meticulously examined the elemental composition of 64 water samples collected during the seasons of spring, summer, autumn, and winter of the year 2023. The average seasonal concentrations of arsenic (As), beryllium (Be), cobalt (Co), cadmium (Cd), copper (Cu), lithium (Li), molybdenum (Mo), nickel (Ni), lead (Pb), selenium (Se), uranium (U), mercury (Hg), aluminum (Al), barium (Ba), chromium (Cr), iron (Fe), manganese (Mn), strontium (Sr), vanadium (V), zinc (Zn), calcium (Ca), potassium (K), magnesium (Mg), sodium (Na), and chlorine (Cl) as well as SO and dry residue were computed at 16 strategically selected sites along the Bolshaya and Malaya Almatinka, Esentai, and Kargalinka rivers situated in Almaty. The sampling locations were categorized into three distinct sectors: upper (adjacent to mountainous regions), middle (urban zone), and lower (exceeding city limits), thereby facilitating the examination of discrepancies in water quality and elemental concentrations.
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