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dc.contributor.authorDeSousa, S.N.
dc.date.accessioned2009-01-10T10:07:04Z
dc.date.available2009-01-10T10:07:04Z
dc.date.issued1999
dc.identifier.citationIndian Journal of Marine Sciences, Vol.28; 355-359p.
dc.identifier.urihttp://drs.nio.org/drs/handle/2264/1734
dc.description.abstractNutrient chemistry in Mandovi Estuary, Goa, India during premonsoon in affected by the discharge of mining rejects. Concentrations of nitrate and phosphate, in general, show low levels in this season (nitate 0.3-3.3 mu M, phosphate 0.11-0.56 mu M) while silicate show wide range in concentration (1.25-130 mu M). Elevated concentrations of nitrate (6.1-9.1 mu M) associated with reduced levels of phosphate (less than 0.1 mu M) and silicate (50-60 mu M) in the mid-estuary, near the discharge point of mining rejects, suggest that the suspended sediments derived from the mining rejects adsorb phosphate and silicate, and remove them from the water column while the mining rejects act as a source of nitrate to the estuary. Large quantities (10 tonnes/month) of ammonium nitrate used in explosives for blasting the hard rock at the mining site seem to be the source of the source of nitrate in mining rejects.
dc.language.isoen
dc.publisherCouncil of Scientific and Industrial Research, New Delhi
dc.rightsCopyright [1999]. All efforts have been made to respect the copyright to the best of our knowledge. Inadvertent omissions, if brought to our notice, stand for correction and withdrawal of document from this repository.
dc.subjectwater analysis
dc.subjectnutrients (mineral)
dc.subjectnitrates
dc.subjectphosphates
dc.subjectsilicates
dc.subjectmine tailings
dc.subjectresuspended sediments
dc.subjectadsorption
dc.subjectchemical oceanography
dc.subjectpollution effects
dc.titleEffect of mining rejects on the nutrient chemistry of Mandovi Estuary, Goa
dc.typeJournal Article


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