2009
DOI: 10.1134/s0001437009060046
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Dissolved and particulate forms of iron and manganese in the redox zone of the Black Sea

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Cited by 24 publications
(19 citation statements)
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“…The same character of irregularities in Fe and Mn species distribution as in the Hunnbunn in 2011 has been observed in the redox zones of the Black and Baltic Seas following oxygen intrusions into the anoxic zone [23,28,29]. If these intrusions led to total disappearance of H 2 S, dissolved Fe(II) also disappeared at this depth, dissolved Mn(II) decreased to small values (sometimes below the detection limit), and a maxima of particulate Mn(IV) and dissolved Mn(III) were formed.…”
Section: Resultsmentioning
confidence: 56%
See 1 more Smart Citation
“…The same character of irregularities in Fe and Mn species distribution as in the Hunnbunn in 2011 has been observed in the redox zones of the Black and Baltic Seas following oxygen intrusions into the anoxic zone [23,28,29]. If these intrusions led to total disappearance of H 2 S, dissolved Fe(II) also disappeared at this depth, dissolved Mn(II) decreased to small values (sometimes below the detection limit), and a maxima of particulate Mn(IV) and dissolved Mn(III) were formed.…”
Section: Resultsmentioning
confidence: 56%
“…The different states can form dissolved, particulate and colloidal compounds with an oxidizing capacity. Additionally, the distribution of manganese and iron species are a good indicator of changing redox conditions [ 23 , 24 ].…”
Section: Introductionmentioning
confidence: 99%
“…As mentioned earlier with respect to Zn, it is well known that intense cycling of Mn occurs across the Black Sea redoxcline (e.g. [57,[71][72][73]), with soluble reduced Mn diffusing up from the suboxic/sulfidic portion of the water column into the oxic layer where it precipitates as Mn oxide particulates that sink back into the sulfidic zone. As noted by many authors (e.g.…”
Section: (C) Processes Controlling Ni and Its Isotopes In The Water Cmentioning
confidence: 93%
“…Mn(IV) forms a wide variety of minerals but typically does not form dissolved species (Morgan 2000); although the same tenets were until recently widely held for Mn(III), dissolved Mn(III) may be stabilized by strong ligands (Morgan 2000), and it has long been thought to exist in soils (Bartlett 1988;Bartlett and James 1993;Dion and Mann 1946;Heintze and Mann 1949). Recent studies have detected the presence of dissolved Mn(III) in suboxic basins and marine sediments (Madison et al 2013;Pakhomova et al 2009;Trouwborst et al 2006), although Mn(III) is not thought to exist in significant concentrations in the surface ocean (Wuttig et al 2013). Mn(III) complexes may be involved in diverse, essential redox chemistry, including the maintenance of suboxic zones (Trouwborst et al 2006).…”
Section: Siderophores and Manganese Biogeochemical Cyclingmentioning
confidence: 97%