Total organic carbon (TOC) and biological oxygen demand (BOD) in water and sediment of Setiu Lagoon, Terengganu, South China Sea

Abstract

The distribution of Total Organic Carbon (TOC) and Biological Oxygen Demand (BOD) in water and sediment of Setiu Lagoon were studied. Three sampling field trips were conducted on the established fourteen stations. The first, second and third sampling was carried out on 13 September 2006, 12 October 2006 and 14 December 2006 respectively. The mean and standard deviation values of TOC in water sample during the first, second and third sampling periods for Setiu lagoon stations were 48.869±19.483mg C/L, 82.711±25.370mg C/L and 87.l 78±13.653mg C/L respectively. The mean and standard deviation values of TOC in sediment during the first, second and third sampling periods for the lagoon stations were 7.367±5.864mg C/g, 9.445±6.31 l mg C/g and 6.946±4.880mg C/g respectively. During first, second and third sampling periods, the mean and standard deviation values BOD5 values for water sample were 0.990±0.345mg/L, l .495±().352mg/L and 0.668±().19l mg/L respectively. First, second and third sampling periods for biodegradable organic carbon for water sample were 0.396±().l 38mg C/L, 0.598±().141 mg/L, 0.267±().076mg/L respectively.