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Sökning: onr:"swepub:oai:DiVA.org:ltu-73761" > Spring flood induce...
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| Fältnamn | Indikatorer | Metadata |
|---|---|---|
| 000 | 05326naa a2200565 4500 | |
| 001 | oai:DiVA.org:ltu-73761 | |
| 003 | SwePub | |
| 008 | 190425s2019 | |||||||||||000 ||eng| | |
| 009 | oai:portal.research.lu.se:publications/2bba2211-5e4e-486d-85de-f5d03e0c3c7d | |
| 024 | 7 | a https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-737612 URI |
| 024 | 7 | a https://doi.org/10.1016/j.apgeochem.2019.1043852 DOI |
| 024 | 7 | a oai:portal.research.lu.se:publications/2bba2211-5e4e-486d-85de-f5d03e0c3c7d2 URI |
| 040 | a (SwePub)ltud (SwePub)lu | |
| 041 | a engb eng | |
| 042 | 9 SwePub | |
| 072 | 7 | a ref2 swepub-contenttype |
| 072 | 7 | a art2 swepub-publicationtype |
| 100 | 1 | a Herzog, Simon D.u Department of Science and Environment, Roskilde University, Roskilde, Denmark,Zealand University Hospital4 aut |
| 245 | 1 0 | a Spring flood induced shifts in Fe speciation and fate at increased salinity |
| 264 | 1 | b Elsevier,c 2019 |
| 338 | a print2 rdacarrier | |
| 500 | a Validerad;2019;Nivå 2;2019-08-20 (johcin);Artikeln har tidigare förekommit som manuskript i avhandling. | |
| 520 | a Rivers have traditionally been viewed as negligible sources of iron (Fe) to marine waters, as most Fe gets lost during estuarine mixing. However, recent findings demonstrate that Fe from boreal rivers display a higher resistance towards salinity-induced aggregation, presumably due to stabilizing interactions with organic matter. Previous studies have shown that Fe (oxy)hydroxides are selectively removed by aggregation processes, and that organic Fe complexes are less affected by increasing salinity. It has been further proposed that Fe speciation varies in response to seasonal differences in hydrology. In this study X-ray absorption spectroscopy (XAS) was used to determine the temporal variation in Fe speciation and the connection to Fe stability in response to increasing salinity in two boreal rivers (Kalix and Råne River), with the purpose to better understand the fate of riverine Fe export. Sampling was done from winter pre-flood, over the spring flood, to post-flood conditions (early April until mid June). In addition, parallel analyses for Fe speciation and isotope composition (δ56Fe relative to IRMM-14) were made on river samples, as well as salinity-induced aggregates and the fraction remaining in suspension, with the main objective to test if δ56Fe reflect the speciation of Fe.The contribution of organically complexed Fe increased during spring flood compared to the pre- and post-flood, as did Fe transport capacity. However, since Fe (oxy)hydroxides were dominating throughout the sampling period, the seasonal variability was small. Interestingly, salinity-induced aggregation experiments revealed that Fe (oxy)hydroxides, which dominated aggregates, displayed lower δ56Fe than in the river samples Fe, while organic Fe complexes in suspension had higher δ56Fe values. The seasonal variability in Fe isotope signature could not be simply linked to Fe speciation, but was probably also influenced by variation in source areas of Fe and processes along the flow-path that alter both Fe speciation and isotopic composition. | |
| 650 | 7 | a NATURVETENSKAPx Geovetenskap och relaterad miljövetenskapx Geokemi0 (SwePub)105062 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Geochemistry0 (SwePub)105062 hsv//eng |
| 650 | 7 | a NATURVETENSKAPx Geovetenskap och relaterad miljövetenskapx Oceanografi, hydrologi och vattenresurser0 (SwePub)105092 hsv//swe |
| 650 | 7 | a NATURAL SCIENCESx Earth and Related Environmental Sciencesx Oceanography, Hydrology and Water Resources0 (SwePub)105092 hsv//eng |
| 653 | a Fe geochemistry | |
| 653 | a Fe speciation | |
| 653 | a Fe isotopes | |
| 653 | a Organically complexed Fe | |
| 653 | a Fe (oxy)hydroxides | |
| 653 | a Boreal | |
| 653 | a Sub-arctic | |
| 653 | a Transport capacity | |
| 653 | a Salinity gradient | |
| 653 | a XAS | |
| 653 | a Tillämpad geokemi | |
| 653 | a Applied Geochemistry | |
| 700 | 1 | a Conrad, Sarahu Luleå tekniska universitet,Geovetenskap och miljöteknik,Applied Geochemistry,Luleå University of Technology4 aut0 (Swepub:ltu)sarcon |
| 700 | 1 | a Ingri, Johanu Luleå tekniska universitet,Geovetenskap och miljöteknik,Applied Geochemistry,Luleå University of Technology4 aut0 (Swepub:ltu)join |
| 700 | 1 | a Persson, Peru Centre for Environmental and Climate Research & Department of Biology, Lund University, Lund, Sweden,Centre for Environmental and Climate Science (CEC),Centrum för miljö- och klimatvetenskap (CEC)4 aut0 (Swepub:lu)ca05969a-f748-4577-a918-51f43655bce1 |
| 700 | 1 | a Kritzberg, Emma S.u Lund University4 aut0 (Swepub:lu)12e1c266-067d-499d-96b2-c857b5ccef73 |
| 710 | 2 | a Department of Science and Environment, Roskilde University, Roskilde, Denmarkb Zealand University Hospital4 org |
| 773 | 0 | t Applied Geochemistryd : Elsevierg 109q 109x 0883-2927x 1872-9134 |
| 856 | 4 | u https://doi.org/10.1016/j.apgeochem.2019.104385 |
| 856 | 4 | u https://doi.org/10.1016/j.apgeochem.2019.104385x freey FULLTEXT |
| 856 | 4 8 | u https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-73761 |
| 856 | 4 8 | u https://doi.org/10.1016/j.apgeochem.2019.104385 |
| 856 | 4 8 | u oai:portal.research.lu.se:publications/2bba2211-5e4e-486d-85de-f5d03e0c3c7d |
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