, Volume 16, Issue 3, pp 453–458 | Cite as

Phosphorus, silicon, and some trace contaminants in the Ganges Estuary

  • V. Subramanian


Dissolved silica and phosphorous show a highly nonconservative behavior in the Ganges Estuary. In addition, phosphorous also shows seasonal variations, with winter levels higher than the levels in the monsoon. Mineral composition inducates enrichment of coarse quartz grains due to selective removal of finer clays in the estuary, either due to flocculation or due to dredging effects of the Port of Calcutta. Particulate P and Si show strong opposite trends, possibly indicating the presence of P in predominently nondetrial fractions in the sediments. Certain trace contaminants, such as Fe, Mn, Cu, Pb and Zn, show seasonal variability as well as enrichment in suspended particulate material relative to bed sediments. Levels of all these contaminents are still well below those reported for rivers such as the Rhine and other highly man-influenced systems.


Seasonal Variability United States Geological Survey Heavy Metal Distribution Suspended Particulate Material Trace Contaminant 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


Unable to display preview. Download preview PDF.

Unable to display preview. Download preview PDF.

Literature Cited

  1. Abbas, N., andV. Subramanian. 1984. Erosion and sediment transport in the Ganges River basin.Journal of Hydrology 69: 173–182.CrossRefGoogle Scholar
  2. Abdel-Moati, A. R. 1990. Behaviour and fluxes of copper and lead in the Nile Estuary.Estuarine, Coastal and Shelf Science 30:153–165.CrossRefGoogle Scholar
  3. American Public Health Association. 1985. Standard Methods for the Examination of Water and Waste Water. 16th ed. Americal Public Health Association, New York. 1,020 p.Google Scholar
  4. Bewers, J. M. andP. A. Yeats 1989. Transport of river derived trace metals through the coastal zone.Netherlands Journal of Sea Research 23:359–368.CrossRefGoogle Scholar
  5. Carroll, D. 1970. Clay minerals identification.Geological Society American Special Paper 126:1–80.Google Scholar
  6. Jha, P. K. andV. Subramanian. 1988. Geochemical studies in the Hooghly (Ganges) Estuary.SCOPE/UNEP Sonderband Heft 66:267–288.Google Scholar
  7. Nolting, R. F., B. Sundby, andJ. C. Duinker. 1990. Behaviour of minor and major elements in the suspended matter in the Rhine and Mense rivers and estuary.Science of the Total Environment 97:169–184.CrossRefGoogle Scholar
  8. Shibu, M. P., A. N. Balchan, andP. N. K. Manbisan. 1990 Trace metal speciation in a tropical estuary.Science of the Total Environment 97:267–288.CrossRefGoogle Scholar
  9. Subramanian, V. andG. Mohanachandran. 1990. Heavy metals distribution in the sediments of east coast of India.Marine Pollution Bulletin 21:324–330.CrossRefGoogle Scholar
  10. Subramanian, V., R. Van Grieken, andL. Van’t Dack. 1987. Heavy metals distribution in the sediments of Ganges and Brahmaputra rivers.Environmental Geology and Water Science 9:93–103.CrossRefGoogle Scholar
  11. Syers, J. K. andD. Curtin. 1989. Inorganic reactions controlling phosphorous cycling, p. 17–29.In H. Tiessen (ed.), Phosphorous Cycles in Terrestrial and Aquatic Systems. University of Saskatchewan Press. Canada.Google Scholar
  12. Vale, C. 1990. Temporal variations of particulate metals in Tagus River estuary.Science of the Total Environment 97:137–154.CrossRefGoogle Scholar
  13. van der Weijden, C. H. andJ. J. Middleberg. 1989. Hydrogeochemistry of the River Rhine.Water Research 23:1247–1266.CrossRefGoogle Scholar
  14. Yamada, H. andM. Kayama. 1987. Distributions and dissolution of several forms of phosphorous in coastal marine sediments.Oceanologica Acta 10:311–321.Google Scholar

Copyright information

© Estuarine Research Federation 1993

Authors and Affiliations

  • V. Subramanian
    • 1
  1. 1.School of Environmental SciencesJawaharlal Nehru UniversityNew DelhiIndia

Personalised recommendations