{"type": "FeatureCollection", "features": [{"id": "10.1016/j.talanta.2018.09.033", "type": "Feature", "geometry": null, "properties": {"updated": "2026-09-21T16:16:26Z", "type": "Journal Article", "created": "2018-09-12", "title": "Assessment of the DGT technique in digestate to fraction twelve trace elements", "description": "This study proposes an evaluation of the diffusive gradients in thin films technique (DGT) for studying trace elements in digested sewage sludge samples. Twelve elements were monitored by Chelex (Al, Cd, Co, Cr (III), Cu, Fe, Mn, Ni, Pb) and zirconia-DGT (As, Mo, Se) samplers exposed from 4\u202fh to 9 days. Twenty-four hours' deployment time was suitable for most of the studied elements. However, short deployment led to insufficient element accumulation or non-establishment of steady state while long deployment (from 18 to 144\u202fh depending on the element) led to saturation of the binding gels and/or competing effects with other major elements. In addition, this study showed that the matrix of the digested sewage sludge lowers the accumulation of some trace elements in the DGT samplers, leading to labile concentrations underestimation of roughly 10-30% (depending on the element). Moreover, compared to the conventional total dissolved elements measurement, DGT technique allowed to quantify 7 out of 12 labile elements whereas only 3 out of 12 dissolved elements were quantified. These results highlight the potential of DGT technique to assess labile trace elements in digestate samples, provided a careful adaptation of the deployment time as well as an evaluation of the matrix effect is performed.", "keywords": ["550", "[SDE.IE]Environmental Sciences/Environmental Engineering", "Matrix interferences", "Speciation", "Metalloids Speciation", "Chemistry (all)", "Biochemistry", "01 natural sciences", "6. 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Due to the complexity of biogeochemical processes and historically compartmentalized disciplines, ecosystem-specific conceptualizations of OM degradation have emerged independently of developments in other ecosystems. Recent discussions regarding the relative importance of molecular composition and ecosystem properties on OM degradation have diverged in opposing directions across subdisciplines, leaving our understanding inconsistent. Ecosystem-dependent theories are problematic since properties unique to an ecosystem may change in response to anthropogenic stressors, including climate change. 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Herein, menthofuran was compared with routinely used nucleophiles, phloroglucinol and 2-mercaptoethanol. At 30 \u00b0C and in the presence of 0.1 M HCl, menthofuran displayed the outstanding ability to enable the fast and full depolymerization of procyanidin B2 using only a 1:1 molar ratio of both reactants. Under the same conditions, phloroglucinol and 2-mercaptoethanol led to a reaction equilibrium with significantly lower conversion yields. Application to commercial tannin extracts showed that a menthofuran-to-extract weight ratio of 1 gave the same yields of procyanidin constitutive units as 10-fold higher molecular equivalent phloroglucinol and 100-fold 2-mercaptoethanol. Finally, guidelines for implementing the menthofuran depolymerization method are proposed to assess the tannin content and composition of extracts as well as of plant materials without prior extraction.", "keywords": ["[CHIM.ANAL] Chemical Sciences/Analytical chemistry", "m\u00e9thode analytique", "Ing\u00e9nierie des aliments", "Menthofuran", "Analytical method", "01 natural sciences", "Catechin", "Chemistry Techniques", " Analytical", "Polymerization", "[CHIM.ANAL]Chemical Sciences/Analytical chemistry", "Food engineering", "Biflavonoids", "Condensed tannins", "Proanthocyanidins", "tanin", "Plant Extracts", "UHPLC-DAD-MS", "540", "6. 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