Trace metal enrichment and organic matter sources in the surface sediments of Arabian Sea along southwest India (Kerala coast)

Sreekanth, Athira; Mrudulrag, S.K.; Cheriyan, Eldhose; Sujatha, C. H.

doi:10.1016/j.marpolbul.2015.10.040

Cited by 25 publications

(7 citation statements)

References 48 publications

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“…This discussion highlighted the importance of DOM molecular information in the understanding of DOM-metal interactions. These results were due to discriminating early diagenesis and biological behavior of sediments [11,17,56].…”

Section: Surface and Underlying Watersmentioning

confidence: 95%

“…The molecular structure and size of DOM greatly impacted complexation between DOM and metals in the waters of DC, e.g., substitutable structure on aromatic rings, aromaticity and hydrophobicity and molecular weight were all critical factors [17,20,53]. The binding of the same metal to DOM in pore water was discerned to be influenced by different organic properties [11], e.g., Co at DC-2 was mainly regulated by molecular size, whereas it was regulated by aromaticity at DC-9. Complexation of Zn, Mo and U to DOM in pore water at these two sites was regulated by the same factor as molecule size, but they were complexed with different molecular weight fractions.…”

Section: Surface and Underlying Watersmentioning

confidence: 99%

“…U, V and Mo exhibited conservative behavior, while Ni, Cu, As, Co and Cd showed additive behavior in desorption processes in the Mekong Delta [10]. Cd and Zn enhanced settling with bio-detritus of upwelling waters, Pb, Co and Ni were evidenced to associate through adsorption of Fe-Mn oxides nodules onto clay minerals, whereas Cu precipitated as Cu sulfides during reducing reactions in the coast along Southwest India [11]. Cu and Pb have high affinity for particulate fraction, Ni and Zn dominate in soluble fraction, which is comprised of free metal ions, complexes and metals entrained in colloidal suspensions [11,12].…”

mentioning

confidence: 96%

“…Cd and Zn enhanced settling with bio-detritus of upwelling waters, Pb, Co and Ni were evidenced to associate through adsorption of Fe-Mn oxides nodules onto clay minerals, whereas Cu precipitated as Cu sulfides during reducing reactions in the coast along Southwest India [11]. Cu and Pb have high affinity for particulate fraction, Ni and Zn dominate in soluble fraction, which is comprised of free metal ions, complexes and metals entrained in colloidal suspensions [11,12]. Deposited metals originated from bacterial cells encapsulated by clay minerals, or adsorption by oxyhydroxides/detrital clays to bring to sediment [13,14].…”

mentioning

confidence: 99%

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Spatial Variations of Trace Metals and Their Complexation Behavior with DOM in the Water of Dianchi Lake, China

Xiao

Mostofa

et al. 2019

IJERPH

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The dynamics of trace metals and the complexation behavior related to organic matter in the interface between water and sediment would influence water quality and evolution in the lake system. This study characterized the distribution of trace metals and the optical properties of dissolved organic matter (DOM) on the surface, and the underlying and pore water of Dianchi Lake (DC) to understand the origin of metals and complexation mechanisms to DOM. Some species of trace metals were detected and Al, Ti, Fe, Zn, Sr and Ba were found to be the main types of metals in the aquatic environment of DC. Ti, Fe, Sr and Ba predominated in water above the depositional layer. Al, Ti, Fe and Sr were the most abundant metallic types in pore water. Mn and Zn were the main type found at the southern lake site, reflecting the contribution of pollution from an inflowing river. The correlations between DOM and metals suggested that both originated from the major source as particulate organic matter (POM), associated with weathering of Ca-, Mg-carbonate detritus and Fe- or Mn-bearing minerals. High dynamics of DOM and hydrochemical conditions would change most metal contents and speciation in different water compartments. Proportions of trace metals in dissolved organic carbon (DOC) in natural waters were correlated with both DOM molecular weight and structure, different metals were regulated by different organic properties, and the same metal also had specific binding characteristic with DOM in various water compartments. This study highlighted the interrelation of DOM and metals, as well as the pivotal role that organic matter and nutrients played during input, migrations and transformations of metals, thereby reflecting water quality evolution in the lake systems.

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Section: Surface and Underlying Watersmentioning

confidence: 95%

Section: Surface and Underlying Watersmentioning

confidence: 99%

mentioning

confidence: 96%

mentioning

confidence: 99%

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Spatial Variations of Trace Metals and Their Complexation Behavior with DOM in the Water of Dianchi Lake, China

Xiao

Mostofa

et al. 2019

IJERPH

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“…The significant correlation of elements with each other may indicate same source, chemical behavior, sediment-water interface and etc. [33]. Spearman's correlation coefficient is a statistical measure of the strength of a monotonic relationship between paired data.…”

Section: Sediment Compositionmentioning

confidence: 99%

Geochemical, Sedimentological and Mineralogical Characterization of Surficial Sediments in Eynak Marsh (North of Iran)

Hazermoshar¹,

Lak²,

Espahbood³

et al. 2016

OJG

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A multidisciplinary study of the sedimentology, geochemistry and mineralogy has been conducted to understand the linkage between marsh and alluvial sediments and also their potential sources in Eynak marsh, North of Iran. The influence of the upstream potential sources on recent sediment geochemistry has been discussed based on geochemical, sedimentological and mineralogical results. A spatial grain size distribution study was carried out to investigate the hydrodynamic and deposition system of the marsh. So, the surficial sediment sampling was carried out to describe the sedimentological parameters and elemental geochemistry of sediments in Eynak marsh. Mineralogical complexes are mainly made up of felsic minerals such as quartz, calcite, feldspar, pyrite, mica, and clay minerals (in very low values) indicated by high amounts of Al, Ca, and Ni. As expected, the mineralogy of sediments is controlled mainly by the rock formations. Also sediment textures are controlled by the hydrodynamic condition in the marsh. So its distribution has been influenced by distance from the entrance sediments to Eynak marsh. The results showed that there are no enrichments related to fine grain sediment distributions. An association of Al with the trace elements such as Sc, Y, La, Ce, and Zr indicates that their distributions are mainly controlled by the felsic rocks in the upstream. On the other side, due to the waste water entrance to the marsh, Ni and Pb concentration could be under the effects of anthropogenic activities around the marsh. Results represented high values for Mn concentration (min 462, max 1784 and average 1037 ppm) and it showed a significant correlation with Ca, Sr, and Mg. A redox habitat and constantly calm hydrodynamic circumstance in the study area, likely cause high concentration of Ca, Sr, and Mg, and Mn. And they are representing negative correlations with some elements such as Al, Be, Fe, K, and Na.

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Organic Carbon in Sediments of the Western Indian Margin

Kessarkar

Rao

Fernandes

et al. 2022

Systems Biogeochemistry of Major Marine Biomes

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Trace metal enrichment and organic matter sources in the surface sediments of Arabian Sea along southwest India (Kerala coast)

Cited by 25 publications

References 48 publications

Spatial Variations of Trace Metals and Their Complexation Behavior with DOM in the Water of Dianchi Lake, China

Spatial Variations of Trace Metals and Their Complexation Behavior with DOM in the Water of Dianchi Lake, China

Geochemical, Sedimentological and Mineralogical Characterization of Surficial Sediments in Eynak Marsh (North of Iran)

Organic Carbon in Sediments of the Western Indian Margin

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