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dc.contributor.authorPrakashBabu, C.
dc.date.accessioned2019-12-31
dc.date.accessioned2020-02-04T09:38:20Z
dc.date.available2019-08-01
dc.date.available2020-02-04T09:38:20Z
dc.date.issued2019
dc.identifier.citationEnvironmental Earth Sciences, vol.78(16); 2019; Article no: 496
dc.identifier.urihttps://doi.org/10.1007/s12665-019-8515-6
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/8208
dc.description.abstractThe processes enriching redox-sensitive arsenic (As) was investigated in 111 surficial sediments (27-3679�m water depth) overlain by varying levels of dissolved oxygen along the eastern Arabian Sea. Under oxygenated conditions, diagenetic enrichment of As was noticed at deeper water depths (> 1200�m), while lattice held As dominant at few station from shallow depths (< 150�m). In sediments impinged by oxygen minimum zone (OMZ; 150-1200�m), As is released from organic matter during sub-oxic diagenesis. As seems to precipitate as As/iron sulfide mineral under intense OMZ based on a positive correlation between As and S and Cd in northeastern part of the study area, while As may diffuse to water column under less intense OMZ evidenced by lack of correlation between As and S and Cd in southeastern part. Several processes can enrich As. A careful approach is recommended for its usage in understanding anthropogenic sources, transport, and paleodepositional environment along eastern Arabian Sea.
dc.languageen
dc.relation.isreferencedbySCI
dc.rightsOnly the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations
dc.titleProcesses controlling arsenic enrichment along the eastern Arabian Sea surficial sediments
dc.typeJournal Article
dc.affiliation.authorCSIR-National Institute of Oceanography, Dona Paula, Goa, India


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