International Journal of Environmental Sciences

Volume 3 Issue 4 2013- January 2013    Pages: 1253-1262  <<Previous    Next>>

Seasonal variations in Physico-Chemical parameters of Thengapattanam estuary, South west coastal zone, Tamilnadu, India

Author Information:

Anitha G1, Sugirtha P. Kumar2
1- Dept. of Chemistry, CSI Institute of Technology, Thovalai, K.K.Dist
2- Dept of Chemistry, Women's Christian College, Nagercoil-1, K.K. Dist


Thengapattanam estuary is located in the South west coast of India 10 Km from Marthandam. It is one of the minor estuary in Kanyakumari District formed   by the confluence of Tampirabarani River (locally known as Kuzhithuraiar) with Arabian sea in between Thengapattanam and Eraiummanthurai (7o53’ N latitude and 77o07’ E longitude) .The present study has been undertaken to enlighten the influence of domestic sewage, agricultural run off and coconut retting wastes on the water quality parameters of this estuary during October 2011 to August 2012. The study area recorded maximum rainfall during northeast monsoon and minimum during summer season. Air and surface temperature showed summer peaks and monsoonal troughs. Temperature variations were associated with the seasonal changes of other physicochemical parameters. Salinity was high during summer season and low during monsoon season. But maximum salinity was recorded at mouth region (station 5).pH remained alkaline throughout the study period in all the stations. DO concentration showed a wide range of variation. It reached its peak during the monsoon season BOD was high during summer season and low during monsoon. Concentration of nutrients nitrite, nitrate, phosphate etc showed significant spatial and temporal variations and high values were observed at the polluted stations.

Keywords: Physicochemical parameters, nutrients, Thengapattanam estuary


© 2012 Copyright by the authors, licensee Integrated Publishing Association.This is an open access article distributed under the Creative Commons Attribution License (3.0) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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