dc.contributor.author | PrakashBabu, C. | |
dc.date.accessioned | 2019-12-31 | |
dc.date.accessioned | 2020-02-04T09:38:20Z | |
dc.date.available | 2019-08-01 | |
dc.date.available | 2020-02-04T09:38:20Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Environmental Earth Sciences, vol.78(16); 2019; Article no: 496 | |
dc.identifier.uri | https://doi.org/10.1007/s12665-019-8515-6 | |
dc.identifier.uri | http://drs.nio.org/drs/handle/2264/8208 | |
dc.description.abstract | The 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.language | en | |
dc.relation.isreferencedby | SCI | |
dc.rights | Only the author version of the copright reserved papers uploaded. Contact drs@nio.org for any complaints regarding copyright violations | |
dc.title | Processes controlling arsenic enrichment along the eastern Arabian Sea surficial sediments | |
dc.type | Journal Article | |
dc.affiliation.author | CSIR-National Institute of Oceanography, Dona Paula, Goa, India | |