FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2800962521> ?p ?o ?g. }

• W2800962521 endingPage "47" @default.
• W2800962521 startingPage "30" @default.
• W2800962521 abstract "Abstract The oxidation and reduction kinetics of copper in natural aquatic systems determines its prevailing redox state, with implication to its toxicity, bioavailability and solubility. When reduced copper(I) co-occurs with ubiquitous hydrogen peroxide (H2O2), their reaction forms an oxidizing intermediate able to affect redox transformation of copper, other transition metals and organic carbon. In this work the kinetics and mechanism of reactions of nanomolar concentrations of copper (Cu) with H2O2 in bicarbonate-buffered 0.7 M NaCl solutions over the pH range from 6.0 to 8.0 have been investigated and a kinetic model developed to assist in understanding the results obtained. While the rate of cuprous ion (Cu(I)) peroxidation did not vary markedly with pH, the rates of both cupric ion (Cu(II)) reduction by H2O2 and the production of oxidative intermediates showed strong pH dependence with both rates observed to increase with increasing pH. The increasing proportion of H2O2 present as the hydroperoxyl anion (HO2−) with increasing pH plays an important role in these trends. However, in order to adequately describe the behavior observed, it is also necessary to invoke a pH-dependent intrinsic conditional rate constant for the reaction between Cu(II) and HO2−. The nature of the oxidants formed when Cu(I) is oxidized by H2O2 has been probed by measuring the hydroxylation of phthalhydrazide and the degradation of formate in the absence and presence of probe compounds with well-established reactivity toward hydroxyl radicals (HO•). The results obtained suggest that a higher oxidation state of copper, Cu(III), rather than HO• is the key oxidant formed over the pH range of 6.0–8.0. Simulations under conditions relevant to natural saline environments reveal that increase in pH results in acceleration in the H2O2-driven cycling of Cu between +I and +II oxidation states but does not significantly influence the rate of production of Cu(III) with important implication for the geochemistry of copper, other redox active elements and oxidizable organic compounds." @default.
• W2800962521 created "2018-05-17" @default.
• W2800962521 creator A5054085794 @default.
• W2800962521 creator A5055677626 @default.
• W2800962521 creator A5067321676 @default.
• W2800962521 creator A5085177988 @default.
• W2800962521 date "2018-07-01" @default.
• W2800962521 modified "2023-10-06" @default.
• W2800962521 title "pH-dependence of production of oxidants (Cu(III) and/or HO•) by copper-catalyzed decomposition of hydrogen peroxide under conditions typical of natural saline waters" @default.
• W2800962521 cites W1530568781 @default.
• W2800962521 cites W1564523312 @default.
• W2800962521 cites W1965305806 @default.
• W2800962521 cites W1966231580 @default.
• W2800962521 cites W1966563133 @default.
• W2800962521 cites W1970841655 @default.
• W2800962521 cites W1972158902 @default.
• W2800962521 cites W1974358124 @default.
• W2800962521 cites W1974433565 @default.
• W2800962521 cites W1974688402 @default.
• W2800962521 cites W1974911747 @default.
• W2800962521 cites W1979242540 @default.
• W2800962521 cites W1980643740 @default.
• W2800962521 cites W1981940760 @default.
• W2800962521 cites W1982067725 @default.
• W2800962521 cites W1994517634 @default.
• W2800962521 cites W1994825807 @default.
• W2800962521 cites W1995098032 @default.
• W2800962521 cites W1995284001 @default.
• W2800962521 cites W1999191223 @default.
• W2800962521 cites W1999607810 @default.
• W2800962521 cites W1999816685 @default.
• W2800962521 cites W2000344700 @default.
• W2800962521 cites W2001576818 @default.
• W2800962521 cites W2006841525 @default.
• W2800962521 cites W2009984821 @default.
• W2800962521 cites W2011077468 @default.
• W2800962521 cites W2014370381 @default.
• W2800962521 cites W2014727628 @default.
• W2800962521 cites W2019698961 @default.
• W2800962521 cites W2022086508 @default.
• W2800962521 cites W2022614146 @default.
• W2800962521 cites W2022688399 @default.
• W2800962521 cites W2027760158 @default.
• W2800962521 cites W2028291957 @default.
• W2800962521 cites W2030143485 @default.
• W2800962521 cites W2031821437 @default.
• W2800962521 cites W2033098287 @default.
• W2800962521 cites W2033233249 @default.
• W2800962521 cites W2034065830 @default.
• W2800962521 cites W2035803088 @default.
• W2800962521 cites W2035900304 @default.
• W2800962521 cites W2047988525 @default.
• W2800962521 cites W2052307646 @default.
• W2800962521 cites W2056351367 @default.
• W2800962521 cites W2061555491 @default.
• W2800962521 cites W2062339469 @default.
• W2800962521 cites W2076486725 @default.
• W2800962521 cites W2079351428 @default.
• W2800962521 cites W2080249887 @default.
• W2800962521 cites W2080668248 @default.
• W2800962521 cites W2081709688 @default.
• W2800962521 cites W2081946813 @default.
• W2800962521 cites W2082899528 @default.
• W2800962521 cites W2086509460 @default.
• W2800962521 cites W2087721137 @default.
• W2800962521 cites W2091790847 @default.
• W2800962521 cites W2094132285 @default.
• W2800962521 cites W2094203467 @default.
• W2800962521 cites W2110719818 @default.
• W2800962521 cites W2147294935 @default.
• W2800962521 cites W2150364181 @default.
• W2800962521 cites W2168972505 @default.
• W2800962521 cites W2232192360 @default.
• W2800962521 cites W2250922394 @default.
• W2800962521 cites W2313035794 @default.
• W2800962521 cites W2318940171 @default.
• W2800962521 cites W231898500 @default.
• W2800962521 cites W2320778738 @default.
• W2800962521 cites W2337403274 @default.
• W2800962521 cites W2416978633 @default.
• W2800962521 cites W2471389182 @default.
• W2800962521 cites W255323337 @default.
• W2800962521 cites W4243127427 @default.
• W2800962521 cites W4247571890 @default.
• W2800962521 cites W90247211 @default.
• W2800962521 doi "https://doi.org/10.1016/j.gca.2018.04.016" @default.
• W2800962521 hasPublicationYear "2018" @default.
• W2800962521 type Work @default.
• W2800962521 sameAs 2800962521 @default.
• W2800962521 citedByCount "35" @default.
• W2800962521 countsByYear W28009625212018 @default.
• W2800962521 countsByYear W28009625212019 @default.
• W2800962521 countsByYear W28009625212020 @default.
• W2800962521 countsByYear W28009625212021 @default.
• W2800962521 countsByYear W28009625212022 @default.
• W2800962521 countsByYear W28009625212023 @default.
• W2800962521 crossrefType "journal-article" @default.
• W2800962521 hasAuthorship W2800962521A5054085794 @default.

• next