Abstract
Geochemical characteristics of Fe and Mn in sand, silt, and clay fractions as well as in bulk sediments of the tropical perennial Muvattupuzha river and the Central Vembanad estuary of the southwest coast of India have been studied and discussed. The results of a physical fractionation study of Fe and Mn indicated a substantial increase in the content of these metals in silt and clay fractions above that in sand. The riverine silt and clay fractions account for two to three times the enrichment of Fe and Mn than the corresponding sand fraction; the estuarine counterparts indicate four to eight times the enrichment. The observed enrichment of Fe and Mn towards the more finer size grades is mainly due to the increased surface area of the finer clastics, which in turn increase the absorptive ability. However, the mineralogical diversities of the three size fractions also influence the enrichment of Fe and Mn. The spatial distribution of Fe and Mn indicates a marked decrease in the content of the latter than the former towards the high saline zones of the river and the estuary. This variation could be due to the higher solubility of Mn towards the high saline zones of the aquatic environment where reducing condition prevails most of the year.
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References
Anirudhan TS (1988) Studies on the nutrient chemistry of a tropical estuary. PhD thesis (unpublished). Cochin University of Science and Technology. 98 pp
Barbatini A and Bothner MH (1993) A procedure for partitioning bulk sediments into distinct grain-size fractions for geochemical analysis. Environ Geol 21:3–13
CESS (1984) Resource atlas of Kerala. Trivandrum: Centre for Earth Science Studies. 39 pp
De Groot AJ and Allersma E (1975) Field observations on transport of heavy metals in sediments. In: Krenkel PA (Ed), Heavy metals in aquatic environment. Oxford: Pergamon Press. pp 85–101
Evans DW, Cutshall NH, Cross FA, and Wolfe DA (1977) Manganese cycling in the Newport River estuary, North Carolina. Estuar Coast Mar Sci 5:71–80
Figures G, Martin JM, and Meybeck M (1978) Iron behaviour in the Zaire estuary. Neth J Sea Res 12:329–337
Folk RL (1974) Petrology of sedimentary rocks. Austin, Texas: Humphill. 182 pp
Forstner U and Wittmann GTW (1983) Metal pollution in the aquatic environment. New York: Springer Verlag. 486 pp
Gibbs RJ (1977) Transport Phases of transition metals in the Amazon and Yukon rivers. Geol Soc Am Bull 88:829–843
Graham WF, Bender ML, and Kinkhammer GD (1976) Manganese in Narranganset Bay. Limnol Oceanogr 21:665–673
Klomp R (1990) Modelling the transport and fate of toxics in the southern north sea. Sci Total Environ 97/98:103–114
Lee CB (1985) Sedimentary process of fine sediments and the behaviour of associated metals in the Keum estuary, Korea. In: Sigleo AC and Hatton A (Eds), Marine and estuarine geochemistry Michigan: Lewis Publishers. pp 210–225
Mallik TK and Suchindan GK (1984) Some sedimentological aspects of Vembanad lake, Kerala, west coast of India. Indian J Mar Sci13:159–163
Mance G (1987) Pollution threat of heavy metals in aquatic environments. New York: Elsevier Applied Science 372 pp
Martin JM and Whitfield M (1983) Significance of river input of chemical elements to the ocean. In: Wong CS, Boyle E, Bruland KW, Burton JD, and Goldberg ED (Eds), Trace metals in sea water. New York: Plenum, pp 265–296
Murty PSN and Veerayya M (1981) Studies on the sediments of Vembanad lake, Kerala State. Part IV-Distribution of trace elements. Indian J Mar Sci 10:165–172
Nair SM, Balchand AN, and Nambisan PNK (1990) Metal concentration in recently deposited sediments of Cochin backwaters, India. Sci Total Environ 97/98:507–524
Padmalal D (1993) Mineralogy and Geochemistry of the sediments of Muvattupuzha river and Central Vembanad estuary, Kerala, India. PhD thesis (unpublished). Cochin University of Science and Technology. 122 pp
Padmalal D and Seralathan P (1991) Interstitial water sediment geochemistry of P and Fe in the sediments of Vembanad lake, west coast of India. Indian J Mar Sci 20:263–266
Salomons W and Forstner U (1984) Metals in the hydrologic cycle. Berlin: Springer-Verlag. 348 pp
Thorne LT and Nickless G (1981) The relation between heavy metals and particle size fractions within the Seven estuary (U.K.) intertidal sediments. Sci Total Environ 19:207–213
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Padmalal, D., Seralathan, P. Geochemistry of Fe and Mn in surficial sediments of a tropical river and estuary, India—a granulometric approach. Geo 25, 270–276 (1995). https://doi.org/10.1007/BF00766757
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DOI: https://doi.org/10.1007/BF00766757