High-resolution mass spectrometry for extended PFAS surveillance in food: combining suspect and non-targeted approaches.

- and polyfluoroalkyl substances (PFAS) are persistent, potentially harmful synthetic chemicals. While they can accumulate in foodstuffs, current monitoring often targets only a few compounds, likely underestimating dietary exposure. In this study, 58 food samples from Europe and North Africa-including commercial products and items from known European contamination hotspots-were analyzed using a validated high-resolution mass spectrometry workflow combining suspect screening (SS) and non-targeted screening (NTS).

Advancing PFASs monitoring in food: from targeted SPE-LC-MS/MS to non-targeted QuEChERS-LC-HRMS approaches.

- and polyfluoroalkyl substances (PFASs) are increasingly recognized as emerging contaminants, with some classified as persistent organic pollutants (POPs) and four recently regulated in food in the EU. However, due to the large structural diversity of PFASs, comprehensive monitoring remains essential. This study aimed to develop and apply a suspect and non-targeted screening approach to identify PFASs beyond those conventionally monitored in foodstuffs.

Microstructured layered-kagome BaCo(VO)(OH) with variable crystallite size: alternative synthetic route and comparison with nanostructured samples.

Microplatelets of the layered-kagome compound BaCo(VO)(OH), which is the Co analogue of mineral vesignieite BaCu(VO)(OH), have been prepared with very high yield by hydrothermal reaction using synthetic karpenkoite CoVO(OH)·2HO as starting reagent. The Rietveld refinement of X-ray diffraction data indicates that CoVO(OH)·2HO is isostructural with martyite ZnVO(OH)·2HO. Two single-phased samples of microstructured BaCo(VO)(OH) have been characterized using powder X-ray diffraction, FT-IR and Raman spectroscopies, thermal analyses, scanning electron microscopy, energy-dispersive X-ray spectroscopy and magnetisation measurements.