FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2045904987> ?p ?o ?g. }

• W2045904987 endingPage "350" @default.
• W2045904987 startingPage "338" @default.
• W2045904987 abstract "Despite intensive studies on Fe(II) oxidation kinetics, the oxidation rate law has not been established under low O2 conditions. The importance of Fe(II) oxidation under low O2 conditions has been recently recognized; for instance, the Fe(II)/Fe(III) compositions of paleosols, ancient soils formed by weathering, can produce a quantitative pattern of the atmospheric oxygen increase during the Paleoproterozoic. The effects of partial pressure of atmospheric oxygen (Po2) on the Fe(II) oxidation rate were investigated to establish the Fe(II) oxidation rate – Po2 relationships under low O2 conditions. All oxidation experiments were carried out in a glove box by introducing Ar gas at ∼10−5–∼10−4 atm of Po2, pH 7.57–8.09 and 22 °C. Luminol chemiluminescence was adopted to measure low Fe(II) concentrations (down to ∼2 nM). Combining previous data under higher Po2 conditions (10−3–0.2 atm) with the present data, the rate law for Fe(II) oxidation over a wide range of Po2 (10−5–0.2 atm) was found to be written as:d[Fe(II)]dt=-k[Fe(II)][O2]x[OH-]2where the exponent of [O2], x, and the rate constant, k, change from x = 0.98 (±0.04) and log k = 15.46 (±0.06) at ∼6 × 10−3–0.2 atm of Po2 to x = 0.58 (±0.02) and log k = 13.41 (±0.03) at 10−5–∼6 × 10−3 atm of Po2. The most plausible mechanism that explains the change in x under low O2 conditions is that, instead of O2, oxygen-derived oxidants, H2O2 and to some extent, O2-, dominate the oxidation reactions at <∼10−3 atm of Po2. The rate law found in the present study requires us to reconsider distributions of Fe redox species at low Po2 in natural environments, especially in paleoweathering profiles, and may provide a deeper understanding of the evolution of atmospheric oxygen in the Precambrian." @default.
• W2045904987 created "2016-06-24" @default.
• W2045904987 creator A5017547454 @default.
• W2045904987 creator A5077716138 @default.
• W2045904987 date "2013-12-01" @default.
• W2045904987 modified "2023-10-01" @default.
• W2045904987 title "Rate law of Fe(II) oxidation under low O2 conditions" @default.
• W2045904987 cites W1519016208 @default.
• W2045904987 cites W1965960727 @default.
• W2045904987 cites W1972880155 @default.
• W2045904987 cites W1975657070 @default.
• W2045904987 cites W1977288325 @default.
• W2045904987 cites W1978412732 @default.
• W2045904987 cites W1978998906 @default.
• W2045904987 cites W1980849404 @default.
• W2045904987 cites W1984268986 @default.
• W2045904987 cites W1988161715 @default.
• W2045904987 cites W1990471776 @default.
• W2045904987 cites W1995224845 @default.
• W2045904987 cites W1995349950 @default.
• W2045904987 cites W1999057913 @default.
• W2045904987 cites W1999243738 @default.
• W2045904987 cites W2004293011 @default.
• W2045904987 cites W2004352688 @default.
• W2045904987 cites W2006251725 @default.
• W2045904987 cites W2008608758 @default.
• W2045904987 cites W2009222459 @default.
• W2045904987 cites W2013315861 @default.
• W2045904987 cites W2015830949 @default.
• W2045904987 cites W2016182716 @default.
• W2045904987 cites W2023404435 @default.
• W2045904987 cites W2024092039 @default.
• W2045904987 cites W2028893111 @default.
• W2045904987 cites W2029579316 @default.
• W2045904987 cites W2031541902 @default.
• W2045904987 cites W2031905405 @default.
• W2045904987 cites W2032295738 @default.
• W2045904987 cites W2033651257 @default.
• W2045904987 cites W2040709479 @default.
• W2045904987 cites W2041142620 @default.
• W2045904987 cites W2042326738 @default.
• W2045904987 cites W2042796545 @default.
• W2045904987 cites W2043595508 @default.
• W2045904987 cites W2048725762 @default.
• W2045904987 cites W2053751618 @default.
• W2045904987 cites W2054861741 @default.
• W2045904987 cites W2063042384 @default.
• W2045904987 cites W2069742136 @default.
• W2045904987 cites W2070155685 @default.
• W2045904987 cites W2071626820 @default.
• W2045904987 cites W2071983566 @default.
• W2045904987 cites W2077561125 @default.
• W2045904987 cites W2078688410 @default.
• W2045904987 cites W2080668248 @default.
• W2045904987 cites W2081383679 @default.
• W2045904987 cites W2082793843 @default.
• W2045904987 cites W2084018568 @default.
• W2045904987 cites W2084983188 @default.
• W2045904987 cites W2085525548 @default.
• W2045904987 cites W2088378284 @default.
• W2045904987 cites W2090027771 @default.
• W2045904987 cites W2090683403 @default.
• W2045904987 cites W2092050158 @default.
• W2045904987 cites W2093271715 @default.
• W2045904987 cites W2116885418 @default.
• W2045904987 cites W2131829457 @default.
• W2045904987 cites W2135490410 @default.
• W2045904987 cites W2136617541 @default.
• W2045904987 cites W2169177413 @default.
• W2045904987 cites W2321856291 @default.
• W2045904987 cites W307000743 @default.
• W2045904987 doi "https://doi.org/10.1016/j.gca.2013.06.014" @default.
• W2045904987 hasPublicationYear "2013" @default.
• W2045904987 type Work @default.
• W2045904987 sameAs 2045904987 @default.
• W2045904987 citedByCount "23" @default.
• W2045904987 countsByYear W20459049872015 @default.
• W2045904987 countsByYear W20459049872016 @default.
• W2045904987 countsByYear W20459049872017 @default.
• W2045904987 countsByYear W20459049872018 @default.
• W2045904987 countsByYear W20459049872019 @default.
• W2045904987 countsByYear W20459049872021 @default.
• W2045904987 countsByYear W20459049872022 @default.
• W2045904987 countsByYear W20459049872023 @default.
• W2045904987 crossrefType "journal-article" @default.
• W2045904987 hasAuthorship W2045904987A5017547454 @default.
• W2045904987 hasAuthorship W2045904987A5077716138 @default.
• W2045904987 hasConcept C107872376 @default.
• W2045904987 hasConcept C111163200 @default.
• W2045904987 hasConcept C113196181 @default.
• W2045904987 hasConcept C121332964 @default.
• W2045904987 hasConcept C148898269 @default.
• W2045904987 hasConcept C178790620 @default.
• W2045904987 hasConcept C179104552 @default.
• W2045904987 hasConcept C185592680 @default.
• W2045904987 hasConcept C199289684 @default.
• W2045904987 hasConcept C2992417270 @default.
• W2045904987 hasConcept C540031477 @default.

• next