eng Science and Education Publishing American Journal of Marine Science 2014-01-09 2 1 19 24 10.12691/marine-2-1-3 MARINE2014213 article B.C. Behera 1 R.R. Mishra 2 J.K. Patra 3 S.K. Dutta 4 H.N Thatoi hn_thatoi@rediffmail.com 5 Department of Biotechnology, North Orissa University, Baripada, Odisha, India Department of Biotechnology, MITS School of Biotechnology, Bhubaneswar, Odisha, India Department of Biotechnology and Medical Engineering, Environmental Laboratory, National Institute of Technology, Rourkela, Odisha, India Centre for Ecological Sciences, Indian Institute of Science, Bangalore, India Department of Biotechnology, College of Engineering and Technology, Biju Pattnaik University of Technology, Bhubaneswar, Odisha, India In the present study, physico-chemical parameters of water samples were compared with the water quality standard of Bureau of Indian standard and the state pollution control board. Variations of different parameters investigated were as follows: Temperature (24.2-30.9°C), dissolved oxygen (2.9-10.9 mg/L), pH (6.05-8.6), electrical conductivity (5.16-17.33 mS/cm), TDS (4510-11900 mg/L), chloride content (4389-12575 mg/l), nitrate (13.03-24.01 mg/l), phosphate (0.55-2.59 mg/l), calcium (125.4-400.8 mg/l), magnesium (153.16-474.13 mg/l) and total hardness (800-2090 mg/l). The significant variations of p among different study sites with high load of calcium, chloride, nitrate and phosphate in most of the study sites indicating the pollution status of the estuarine water. http://pubs.sciepub.com/marine/2/1/3/marine-2-1-3.pdf mangrove ecosystemphysico-chemical parameterwater quality and water pollution