NOPR Collection: http://nopr.niscpr.res.in/handle/123456789/37165 2026-10-08T19:37:19Z Distribution of petroleum hydrocarbons in sediments of the Cochin estuary south west coast of India http://nopr.niscpr.res.in/handle/123456789/37365 Title: Distribution of petroleum hydrocarbons in sediments of the Cochin estuary south west coast of India Authors: Nair, T Vasudevan; Chacko, Jacob; Chandramohanakumar, N Abstract: Surficial sediment study revealed that the concentration of PHC was higher at the estuarine stations than at the riverine stations. The PHC concentration varied between 249 mu g.g(-1) and 570 mu g.g(-1) dry weight. The higher concentration of PHC could be due to the anthropogenic input which aggregates and settles onto the bottom sediments. The study indicated that the estuarine zone was significantly polluted by PHC. Page(s): 240-242 1995-12-01T00:00:00Z Marine products from Bay of Bengal – Part- III*: Sterol composition of four molluscs and a sea pen http://nopr.niscpr.res.in/handle/123456789/37364 Title: Marine products from Bay of Bengal – Part- III*: Sterol composition of four molluscs and a sea pen Authors: Goswami, Anindya; Saha, Subrata; Mukhopadhyay, Sibabrata; Pakrashi, Satyesh Chandra Abstract: The steroidal composition of four molluscs Meretrix meretrix, Macoma birmanica (bivalves), Cerethidea cingulata, Nassarius stolatus (gastropode) and a sea pen Cavernulina sp., has been ascertained by GC-MS. The isolation of cholest-6-en-5 alpha, 8 alpha-epidioxy-3 beta-ol from M. meretrix, reveals the first reported occurrence of this peroxide in a bivalve. Page(s): 238-239 1995-12-01T00:00:00Z Iron and manganese concentrations in seawater, sediment and marine algae of Tuticorin coast, southeast coast of India http://nopr.niscpr.res.in/handle/123456789/37363 Title: Iron and manganese concentrations in seawater, sediment and marine algae of Tuticorin coast, southeast coast of India Authors: Ganesan, M; Kannan, L Abstract: Seasonal variation in Fe and Mn concentrations were determined in seawater, sediment and algae (Padina gymnospora and Acanthophora spicifera) in the vicinity of Tuticorin port. Fe and Mn were appreciably higher than other parts of the Indian coast. High content of Fe and Mn were observed in seawater during northeast monsoon (November and December) and postmonsoon (January and March) seasons and in sediment Fe and Mn concentrations were high during monsoon (July to October) and postmonsoon (January, Feberuary) seasons due to increasing inputs of land runoffs. Algae also concentrated more metals during monsoon and postmonsoon seasons. Significantly higher Fe concentration in algae than other parts of the Indian coast reflects the intensity of Fe pollution in Tuticorin coast. Page(s): 236-237 1995-12-01T00:00:00Z Seasonal distribution and behaviour of nitrate and phosphate in Rushikulya estuary, east coast of India http://nopr.niscpr.res.in/handle/123456789/37362 Title: Seasonal distribution and behaviour of nitrate and phosphate in Rushikulya estuary, east coast of India Authors: Gouda, Rajashree; Panigrahy, R C Abstract: Spatio-temporal distribution in surface water concentrations of NO3-N ranged from 0.37-18.48 mu g-at.l(-1) in 1988 and 0.04-22.27 mu g-at.l(-1) in 1989. Surface water PO43--P varied from 0.09-1.86 and 0.05-3.30 mu g-at.l(-1) during 1988 and 1989 respectively. Bottom water concentrations of NO3--N and PO43--P ranged from 0.05-13.14 and 0.08-2 mu g-at.l(-1) in 1988 and from 0.28-10.44 & 0.09-2.14 mu g-at.l(-1) in 1989 respectively. Nitrate:phosphate ratios, although discerned wide range of variations, rarely exceeded the Redfield's value of 16:1. Among these two nutrients, the role of NO3--N becomes more important with respect to phytoplankton production. Page(s): 233-235 1995-12-01T00:00:00Z