FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W1736105525> ?p ?o ?g. }

• W1736105525 endingPage "1903" @default.
• W1736105525 startingPage "1892" @default.
• W1736105525 abstract "This study examined the kinetics of photoreduction of Hg(ii) and photodemethylation of methylmercury (MeHg(+)) attached to, or in the presence of, dissolved organic matter (DOM). Both Hg(ii) and MeHg(+) are principally bound to reduced sulfur groups associated with DOM in many freshwater systems. We propose that a direct photolysis mechanism is plausible for reduction of Hg(ii) bound to reduced sulfur groups on DOM while an indirect mechanism is supported for photodemethylation of MeHg(+) bound to DOM. UV spectra of Hg(ii) and MeHg(+) bound to thiol containing molecules demonstrate that the Hg(ii)-S bond is capable of absorbing UV-light in the solar spectrum to a much greater extent than MeHg(+)-S bonds. Experiments with chemically distinct DOM isolates suggest that concentration of DOM matters little in the photochemistry if there are enough reduced S sites present to strongly bind MeHg(+) and Hg(ii); DOM concentration does not play a prominent role in photodemethylation other than to screen light, which was demonstrated in a field experiment in the highly colored St. Louis River where photodemethylation was not observed at depths ≥ 10 cm. Experiments with thiol ligands yielded slower photodegradation rates for MeHg(+) than in experiments with DOM and thiols; rates in the presence of DOM alone were the fastest supporting an intra-DOM mechanism. Hg(ii) photoreduction rates, however, were similar in experiments with only DOM, thiols plus DOM, or only thiols suggesting a direct photolysis mechanism. Quenching experiments also support the existence of an intra-DOM photodemethylation mechanism for MeHg(+). Utilizing the difference in photodemethylation rates measured for MeHg(+) attached to DOM or thiol ligands, the binding constant for MeHg(+) attached to thiol groups on DOM was estimated to be 10(16.7)." @default.
• W1736105525 created "2016-06-24" @default.
• W1736105525 creator A5004708482 @default.
• W1736105525 creator A5007403645 @default.
• W1736105525 creator A5021476782 @default.
• W1736105525 creator A5047135618 @default.
• W1736105525 creator A5047583294 @default.
• W1736105525 creator A5063734151 @default.
• W1736105525 creator A5089025889 @default.
• W1736105525 date "2015-01-01" @default.
• W1736105525 modified "2023-10-07" @default.
• W1736105525 title "Photoreduction of Hg(<scp>ii</scp>) and photodemethylation of methylmercury: the key role of thiol sites on dissolved organic matter" @default.
• W1736105525 cites W1963789971 @default.
• W1736105525 cites W1963880239 @default.
• W1736105525 cites W1970801056 @default.
• W1736105525 cites W1971556334 @default.
• W1736105525 cites W1978163322 @default.
• W1736105525 cites W1985373671 @default.
• W1736105525 cites W1986333544 @default.
• W1736105525 cites W1993227279 @default.
• W1736105525 cites W2007663401 @default.
• W1736105525 cites W2017303728 @default.
• W1736105525 cites W2024934242 @default.
• W1736105525 cites W2034359475 @default.
• W1736105525 cites W2037937349 @default.
• W1736105525 cites W2038019186 @default.
• W1736105525 cites W2042672900 @default.
• W1736105525 cites W2042816372 @default.
• W1736105525 cites W2051754940 @default.
• W1736105525 cites W2060475273 @default.
• W1736105525 cites W2060475851 @default.
• W1736105525 cites W2064099976 @default.
• W1736105525 cites W2065093525 @default.
• W1736105525 cites W2071858655 @default.
• W1736105525 cites W2074196765 @default.
• W1736105525 cites W2085248010 @default.
• W1736105525 cites W2106532234 @default.
• W1736105525 cites W2125027863 @default.
• W1736105525 cites W2155812824 @default.
• W1736105525 cites W2171568827 @default.
• W1736105525 cites W2325742434 @default.
• W1736105525 doi "https://doi.org/10.1039/c5em00305a" @default.
• W1736105525 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/26420634" @default.
• W1736105525 hasPublicationYear "2015" @default.
• W1736105525 type Work @default.
• W1736105525 sameAs 1736105525 @default.
• W1736105525 citedByCount "39" @default.
• W1736105525 countsByYear W17361055252016 @default.
• W1736105525 countsByYear W17361055252017 @default.
• W1736105525 countsByYear W17361055252018 @default.
• W1736105525 countsByYear W17361055252019 @default.
• W1736105525 countsByYear W17361055252020 @default.
• W1736105525 countsByYear W17361055252021 @default.
• W1736105525 countsByYear W17361055252022 @default.
• W1736105525 countsByYear W17361055252023 @default.
• W1736105525 crossrefType "journal-article" @default.
• W1736105525 hasAuthorship W1736105525A5004708482 @default.
• W1736105525 hasAuthorship W1736105525A5007403645 @default.
• W1736105525 hasAuthorship W1736105525A5021476782 @default.
• W1736105525 hasAuthorship W1736105525A5047135618 @default.
• W1736105525 hasAuthorship W1736105525A5047583294 @default.
• W1736105525 hasAuthorship W1736105525A5063734151 @default.
• W1736105525 hasAuthorship W1736105525A5089025889 @default.
• W1736105525 hasConcept C107872376 @default.
• W1736105525 hasConcept C121332964 @default.
• W1736105525 hasConcept C121745418 @default.
• W1736105525 hasConcept C161790260 @default.
• W1736105525 hasConcept C162847780 @default.
• W1736105525 hasConcept C178790620 @default.
• W1736105525 hasConcept C185592680 @default.
• W1736105525 hasConcept C2780373914 @default.
• W1736105525 hasConcept C2781324293 @default.
• W1736105525 hasConcept C36574619 @default.
• W1736105525 hasConcept C518881349 @default.
• W1736105525 hasConcept C54582936 @default.
• W1736105525 hasConcept C62520636 @default.
• W1736105525 hasConcept C65165184 @default.
• W1736105525 hasConcept C71572567 @default.
• W1736105525 hasConcept C75473681 @default.
• W1736105525 hasConcept C91881484 @default.
• W1736105525 hasConceptScore W1736105525C107872376 @default.
• W1736105525 hasConceptScore W1736105525C121332964 @default.
• W1736105525 hasConceptScore W1736105525C121745418 @default.
• W1736105525 hasConceptScore W1736105525C161790260 @default.
• W1736105525 hasConceptScore W1736105525C162847780 @default.
• W1736105525 hasConceptScore W1736105525C178790620 @default.
• W1736105525 hasConceptScore W1736105525C185592680 @default.
• W1736105525 hasConceptScore W1736105525C2780373914 @default.
• W1736105525 hasConceptScore W1736105525C2781324293 @default.
• W1736105525 hasConceptScore W1736105525C36574619 @default.
• W1736105525 hasConceptScore W1736105525C518881349 @default.
• W1736105525 hasConceptScore W1736105525C54582936 @default.
• W1736105525 hasConceptScore W1736105525C62520636 @default.
• W1736105525 hasConceptScore W1736105525C65165184 @default.
• W1736105525 hasConceptScore W1736105525C71572567 @default.
• W1736105525 hasConceptScore W1736105525C75473681 @default.
• W1736105525 hasConceptScore W1736105525C91881484 @default.
• W1736105525 hasFunder F4320337403 @default.

• next