Studies on physico-chemical parameters in the Nagappattinam marine water samples, south east coast of Tamil Nadu, India

Monthly fluctuations of physico-chemical characteristics were carried out in Nagapattinam marine water samples, South east coast of Tamil Nadu, India, for a period of twelve months (August 2016 to July 2017). Nine various physico-chemical parameters were analyzed by using standard methods (APHA, 1998). Water temperature varied from 25.65 to 33.40°C, Turbidity was from 23.57 to 45.36 cm, pH ranged from 7.20 to 8.52, dissolved oxygen content varied between 3.87 to 6.17 mg/L, salinity (28.10 to 32.09 mg/L), calcium (33.67 to 69.98 mg/L), phosphate (0.09 to 0.13 mg/L), nitrate (0.14 to 0.38 mg/L) and ammonia (0.11 to 0.56 mg/L) also varied independently. The maximum and minimum were noted during the study period August 2016 to July 2017.