Analytical and Bioanalytical Chemistry, Год журнала: 2024, Номер unknown
Опубликована: Ноя. 21, 2024
Язык: Английский
Environmental Science & Technology, Год журнала: 2025, Номер unknown
Опубликована: Апрель 2, 2025
Per- and polyfluoroalkyl substances (PFAS) are synthetic long-lasting chemicals. Marine sediment is a major repository for PFAS in the environment; accordingly, this work investigated 45 legacy emerging samples of surface sediments cores (1940s-2020s) collected Pearl River outlets, its estuary, adjacent northern South China Sea (NSCS), one global pollution hotspots. The range total concentrations from river outlets NSCS was 244-14400 pg/g dry weight (dw) 31.6-363 dw, respectively. In cores, perfluorooctanesulfonate (PFOS) initially increased then declined around ten years ago. Levels long-chain perfluorinated carboxylates have been increasing since 1980s experienced an accelerated rise 2000s. Hydrogen-substituted ether sulfonate (H-PFESA) widely found first time. ratios 6:2 H-PFESA to chlorinated (Cl-) PFESA exceeded those exhibited trend with age, implying gradual transformation Cl-PFESA hydrogen-substituted analog sediments. A preliminary risk assessment indicated that ∑6:2 PFESAs PFOS posed medium high risks over recent decades.
Язык: Английский
Процитировано
2
TrAC Trends in Analytical Chemistry, Год журнала: 2024, Номер 175, С. 117719 - 117719
Опубликована: Апрель 23, 2024
Язык: Английский
Процитировано
12
Environmental Science & Technology, Год журнала: 2025, Номер unknown
Опубликована: Апрель 7, 2025
The application of aqueous film-forming foams (AFFFs) has caused considerable per- and polyfluoroalkyl substances (PFAS) pollution in the environment. Soil serves as a long-term source PFAS for adjacent groundwater surface water, but lack extractable organofluorine (EOF) mass balance data AFFF-impacted soils may lead to an underestimation contamination. This study analyzed ten soil samples from three sites Sweden, using alkaline extraction followed by acidic extraction. fractions were subjected further cleanup separately target, suspect screening, EOF analysis evaluate efficiencies different reveal remaining unknown soils. Total target concentrations ranged 33.0 2.40 × 104 ng/g dry weight. Thirty-six identified screening. Considerable amounts zwitterionic cationic (up 58%) fraction, while >95% anionic found fraction. was conducted on first time. high proportion unexplained 65%) indicated necessity future investigation comprehensively understand their fate risk.
Язык: Английский
Процитировано
1
Environment International, Год журнала: 2024, Номер 187, С. 108719 - 108719
Опубликована: Май 1, 2024
Per- and polyfluoroalkyl substances (PFAS) have been shown to penetrate the blood–brain barrier (BBB) accumulate in human brain. The BBB transmission accumulation efficiency of PFAS, as well potential health risks from co-exposure legacy emerging PFAS due differences transport efficiency, need be further elucidated. In present pilot study, 23 plasma samples glioma patients were analyzed for 17 PFAS. concentrations six paired brain tissue used calculate (RPFAS). This RPFAS analysis was conducted with utmost care consideration amid limited availability valuable samples. results indicated that low molecular weight including short-chain may a greater than long-chain As an alternative perfluorooctane sulfonic acid (PFOS), 6:2 chlorinated polyfluorinated ether sulfonate (6:2Cl-PFESA) exhibited similar PFOS, suggesting it not suitable substitute concerning risk efficiencies perfluorooctanoic acid, 6:2Cl-PFESA showed trends age, which important factor influencing entry exogenous compounds into A favorable link between sulfonamide (FOSA) development and/or progression implicated by strong positive correlation (r2 = 0.94; p < 0.01) RFOSA Ki-67 (a marker glioma). However, causal relationship incidence established study. study first examination highlighted importance reducing controlling exposure
Язык: Английский
Процитировано
6
Food Chemistry, Год журнала: 2025, Номер 480, С. 143891 - 143891
Опубликована: Март 15, 2025
This study presents a novel method for in situ extraction of per- and polyfluoroalkyl substances (PFAS) from intact meat samples using recessed solid phase microextraction (SPME) device coupled with LC-MS/MS. The SPME matrix-compatible coating (HLB-WAX/PAN) the section, exhibited mechanically robust low matrix effects (-13.7-11.1 %). Key parameters influencing efficiency, including time, adsorbent amount, temperature, desorption time were comprehensively optimized. stability PFAS adsorbed onto during storage at different temperatures durations was also assessed. Under optimized conditions, proposed demonstrated applicability across pork, beef, lamb tissues excellent linearity (R2 ≥ 99.32 %), good sensitivity (LOD range 0.01-1.52 ng/g), as well acceptable accuracy reproducibility (intra-day inter-day). Compared conventional methods, SPME-LC-MS/MS shows advantages simple operation, short organic solvent consumption effects. approach offers straightforward reliable solution direct monitoring commercial has potential on-site application.
Язык: Английский
Процитировано
0
Life, Год журнала: 2025, Номер 15(4), С. 573 - 573
Опубликована: Апрель 1, 2025
Per- and polyfluoroalkyl substances (PFASs) are among the persistent organic pollutants characterized by their persistence in environment, high mobility, adverse impact not only on ecosystem but also human health. The biggest challenges biomonitoring low concentrations of PFASs biological matrices presence matrix interferents samples. combination liquid chromatography with tandem mass spectrometry (LC-MS/MS) solid-phase extraction (SPE) as a sample preparation technique appears to be most suitable solution for achieving desired selectivity sensitivity PFAS determination. aim this review is describe possible sources PFASs, various matrices, analytical methods determining different using pretreatment techniques complex samples, well health risks associated exposure. studied include PFOA PFOS, which frequently detected such plasma, serum, breast milk. average range from 1.0 2.6 ng.mL−1 1.9 2.4 0.4 3.1 For were 2.0–4.0 ng.mL−1, 3.7–4.6 3.6–4.8 milk, respectively. significant effects exposure long-chain (such PFOS) lipid disorders, hypertension, diabetes mellitus, thyroid infertility, cancer, obesity, autism, neurodevelopmental issues, cardiovascular diseases, kidney liver disorders. It utmost importance monitor exposure, predict toxicity, develop effective strategies mitigate potential
Язык: Английский
Процитировано
0
Environmental Science & Technology Letters, Год журнала: 2025, Номер unknown
Опубликована: Апрель 4, 2025
Язык: Английский
Процитировано
0
Marine Pollution Bulletin, Год журнала: 2025, Номер 216, С. 117993 - 117993
Опубликована: Апрель 18, 2025
Язык: Английский
Процитировано
0
Environmental Pollution, Год журнала: 2025, Номер unknown, С. 126420 - 126420
Опубликована: Май 1, 2025
Язык: Английский
Процитировано
0
LWT, Год журнала: 2024, Номер 203, С. 116373 - 116373
Опубликована: Июнь 18, 2024
Deep eutectic solvents (DESs) are recognized as sustainable mediums, and DES-related materials have been used for the detection of perfluoroalkyl substances (PFASs). However, such studies were usually limited to only one category PFASs among massive target compounds. Additionally, selectivity related method still needs improvement. In this study, a convenient effective direct selective microextraction multiple was developed based on target-specific DES-based superparamagnetic nanofluid. Parameters DES compositions, amount nanofluid, time systematically investigated establish straightforward, rapid, sensitive, efficient green pretreatment method. Under optimal conditions, demonstrated high sensitivity, good precision, limit 0.04–8.71 ng kg−1, spike recovery 80.49–119.95%, low matrix effects (<20%). The potential mechanism elucidated by ab initio molecular dynamics (AIMD) simulations. solvent system exhibited diverse interaction modes with analytes varying types, including hydrogen bond acceptors (HBA)···PFASs, HBA···FAAs···hydrogen donors (HBD), hetero-halogen interactions. Finally, applied monitoring 13 compounds in 17 edible oil samples, targets detected range 0.05–10.04 kg−1.
Язык: Английский
Процитировано
3