Behaviour of fluoride and dissolved silicon in Gouthami Godavari estuarine environment

V.V. Sarma, U. Sudhakar, S.J.D. Varaprasad


The concentrations of fluoride and dissolved silicon in Gouthami-Godavari estuarine region (Andhra Pradesh, India) have been measured as a function of chlorinity during different seasons. Fluoride and dissolved silicon behave conservatively during post-monsoon season. However, during premonsoon season, removal of approximately 16% in case of fluoride and 41% in case of dissolved silicon was found during mixing of sea and river waters. The possible mechanisms for removal of both the elements have been explained. The net annual flux of dissolved silicon has been calculated to be 4.70 x 10 super(5) tons/yr from Godavari River into the Bay of Bengal


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