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Organic matter character as a critical factor determining the fate and stability of its association with iron in sediments
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SYSNO ASEP 0562700 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Organic matter character as a critical factor determining the fate and stability of its association with iron in sediments Tvůrce(i) Osafo, Nana O.A. (BC-A) ORCID
Jan, Jiří (BC-A) RID, ORCID
Valero Soriano, Astolfo Enrique (BC-A)
Porcal, Petr (BC-A) RID, ORCID
Petrash, Daniel A. (BC-A) RID, ORCID
Borovec, Jakub (BC-A) RIDZdroj.dok. Journal of Soils and Sediments. - : Springer - ISSN 1439-0108
Roč. 22, č. 6 (2022), s. 1865-1875Poč.str. 11 s. Jazyk dok. eng - angličtina Země vyd. DE - Německo Klíč. slova freshwater reservoir ; redox reactivity ; sequential extraction ; PARAFAC ; UV-vis Vědní obor RIV DA - Hydrologie a limnologie Obor OECD Marine biology, freshwater biology, limnology CEP LM2015075 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy EF16_013/0001782 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GJ19-15096Y GA ČR - Grantová agentura ČR GA19-00113S GA ČR - Grantová agentura ČR QK1810161 GA MZe - Ministerstvo zemědělství QK22020179 GA MZe - Ministerstvo zemědělství Způsob publikování Omezený přístup Institucionální podpora BC-A - RVO:60077344 UT WOS 000779266700001 EID SCOPUS 85127595454 DOI 10.1007/s11368-022-03207-x Anotace Purpose Complexes of organic matter (OM) with iron (Fe) oxyhydroxides (OM-Fe) prevent/reduce microbial degradation and enhance its stabilization in soils and sediments. Missing in most studies regarding the quality of OM-Fe complexes is in this study addressed by optical method characterization using absorbance and fluorescence, which is a unique approach in combination with sequential extraction methods. This study finds the quality of OM which promotes the stability of the OM-Fe aggregates with respect to the rate of redox dissolution of Fe mineral phases. Methods Sediment samples from a mesotrophic freshwater reservoir were sequentially extracted to distinguish Fe oxyhydroxides solubility at different dissolution times. This allowed us to assess the OM-Fe association with easily reducible Fe-bearing minerals vs. more stable yet reducible fractions. The quality of the sequentially extracted DOM associated with different redox reactivity mineral phases was evaluated by UV-Vis and fluorescence spectroscopy using a parallel factor analysis (PARAFAC) model. Results Humic-like substances render soluble and labile OM-Fe associations, while non-humic substances enhance the stability of such associations under reducing conditions. In anoxic sediments, non-humic substances are stabilized in the OM-Fe associations. Conclusion This study described the fate of OM-Fe in anoxic sediments by coupling sequential extractions with UV-Vis and fluorescence spectroscopy characterization. This is a new reliable and simple approach for evaluating the stability of OM-Fe aggregates in sediments, soils, and/or wastewater treatment sludge. Pracoviště Biologické centrum (od r. 2006) Kontakt Dana Hypšová, eje@eje.cz, Tel.: 387 775 214 Rok sběru 2023 Elektronická adresa https://link.springer.com/article/10.1007/s11368-022-03207-x
Počet záznamů: 1