FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2729178081> ?p ?o ?g. }

• W2729178081 endingPage "197" @default.
• W2729178081 startingPage "178" @default.
• W2729178081 abstract "Abstract The complex behaviour of Zn and Cu at the soil-river interface was investigated in soil and riverine water samples from the Rio Negro basin, a secondary tributary of the Rio Amazonas, using their stable isotope compositions. This acidic and organic river drains two types of intensely weathered terrains: podzols in its upstream part, and lateritic soils downstream. Bulk soil particles, suspended particulate matter (SPM) as well as colloidal fractions were sampled across the whole basin during low and high water stages. In the basin, Zn and Cu are mostly exported from lateritic soils and transported by organic colloids where significant losses are observed in the downstream part of the river. The use of δ66Zn and δ65Cu measurements reveals distinct stories for these two metals in suspended sediments and colloids. In the colloids, the constant δ66Zncoll across the basin is induced by the same weak association mode between Zn and organic ligands, regardless of the origin of the water. By contrast, in SPM, the speciation of Zn and thus δ66ZnSPM differ according to the type of drained soils. Zn is associated with organic complexes in particles exported with water draining podzol whereas Zn2+ is incorporated in the structure of the remaining kaolinite clays in lateritic output. The stronger reactivity of Cu than Zn with organic ligands induces its complete complexation. Copper is controlled by refractory particulate organic matter (POM) and by reactive colloidal organic matter; the latter being enriched in 65Cu due to stronger binding interactions than in POM. While the Cu content remains constant in the upstream part of the Rio Negro, downstream, the decrease of SPM and colloidal Cu fluxes is associated with a constant δ65CuSPM and with an increase of δ65Cucoll at the Rio Negro outlet. Geochemical mass balance modelling, based on SPM, Cu and Zn fluxes in SPM and their associated isotopic signatures, confirms distinct host phases for Zn and Cu, and identifies the most probable places where losses of these two metals occur. In colloids, the observed Cu isotope fractionation (from 0.24 to 0.45‰) superimposed on the significant Cucoll loss is assumed to result from a new isotopic equilibrium in a low velocity and high productivity zone: Cu-rich colloids enriched in 63Cu aggregate and settle down, whereas the remaining heavy Cu is partially complexed on strong organic ligands secreted by phytoplankton, forming new Cu-colloids." @default.
• W2729178081 created "2017-07-14" @default.
• W2729178081 creator A5040901817 @default.
• W2729178081 creator A5045862452 @default.
• W2729178081 creator A5048120608 @default.
• W2729178081 creator A5050338864 @default.
• W2729178081 creator A5052814919 @default.
• W2729178081 creator A5091658565 @default.
• W2729178081 date "2017-09-01" @default.
• W2729178081 modified "2023-10-18" @default.
• W2729178081 title "Zinc and copper behaviour at the soil-river interface: New insights by Zn and Cu isotopes in the organic-rich Rio Negro basin" @default.
• W2729178081 cites W1409281717 @default.
• W2729178081 cites W1547519467 @default.
• W2729178081 cites W1552989292 @default.
• W2729178081 cites W1828380084 @default.
• W2729178081 cites W1964755189 @default.
• W2729178081 cites W1966539545 @default.
• W2729178081 cites W1973045241 @default.
• W2729178081 cites W1978676052 @default.
• W2729178081 cites W1979365097 @default.
• W2729178081 cites W1980728471 @default.
• W2729178081 cites W1981979130 @default.
• W2729178081 cites W1983402256 @default.
• W2729178081 cites W1988604509 @default.
• W2729178081 cites W1989292546 @default.
• W2729178081 cites W1992222257 @default.
• W2729178081 cites W1994415630 @default.
• W2729178081 cites W1994530810 @default.
• W2729178081 cites W1996901074 @default.
• W2729178081 cites W1999287653 @default.
• W2729178081 cites W2006499574 @default.
• W2729178081 cites W2009009356 @default.
• W2729178081 cites W2010995462 @default.
• W2729178081 cites W2011567504 @default.
• W2729178081 cites W2019180529 @default.
• W2729178081 cites W2019387141 @default.
• W2729178081 cites W2020389567 @default.
• W2729178081 cites W2024320646 @default.
• W2729178081 cites W2025807706 @default.
• W2729178081 cites W2027888747 @default.
• W2729178081 cites W2029351912 @default.
• W2729178081 cites W2029755997 @default.
• W2729178081 cites W2030109458 @default.
• W2729178081 cites W2030645025 @default.
• W2729178081 cites W2031082438 @default.
• W2729178081 cites W2032321488 @default.
• W2729178081 cites W2039296860 @default.
• W2729178081 cites W2040144645 @default.
• W2729178081 cites W2040825740 @default.
• W2729178081 cites W2042229806 @default.
• W2729178081 cites W2043442250 @default.
• W2729178081 cites W2047062196 @default.
• W2729178081 cites W2049625782 @default.
• W2729178081 cites W2053017269 @default.
• W2729178081 cites W2053799112 @default.
• W2729178081 cites W2054889142 @default.
• W2729178081 cites W2056375146 @default.
• W2729178081 cites W2056625629 @default.
• W2729178081 cites W2060402960 @default.
• W2729178081 cites W206149373 @default.
• W2729178081 cites W2062383693 @default.
• W2729178081 cites W2062564954 @default.
• W2729178081 cites W2062875972 @default.
• W2729178081 cites W2062984411 @default.
• W2729178081 cites W2063263639 @default.
• W2729178081 cites W2066848719 @default.
• W2729178081 cites W2067838278 @default.
• W2729178081 cites W2068217360 @default.
• W2729178081 cites W2068496916 @default.
• W2729178081 cites W2069069052 @default.
• W2729178081 cites W2070297775 @default.
• W2729178081 cites W2074932541 @default.
• W2729178081 cites W2076050381 @default.
• W2729178081 cites W2077008689 @default.
• W2729178081 cites W2081264066 @default.
• W2729178081 cites W2082184572 @default.
• W2729178081 cites W2083801479 @default.
• W2729178081 cites W2090088398 @default.
• W2729178081 cites W2092166815 @default.
• W2729178081 cites W2093236988 @default.
• W2729178081 cites W2093696105 @default.
• W2729178081 cites W2099260783 @default.
• W2729178081 cites W2099867894 @default.
• W2729178081 cites W2102484660 @default.
• W2729178081 cites W2111802277 @default.
• W2729178081 cites W2113086790 @default.
• W2729178081 cites W2114134135 @default.
• W2729178081 cites W2116807762 @default.
• W2729178081 cites W2123232386 @default.
• W2729178081 cites W2127976520 @default.
• W2729178081 cites W2136401208 @default.
• W2729178081 cites W2137121736 @default.
• W2729178081 cites W2140495719 @default.
• W2729178081 cites W2142004983 @default.
• W2729178081 cites W2144462189 @default.
• W2729178081 cites W2147037889 @default.
• W2729178081 cites W2150133978 @default.
• W2729178081 cites W2152868026 @default.

• next