Distribution of phosphorus in Terengganu river estuary, Terengganu

Abstract

This study was done to detennined distribution and concentration of phosphorus in Terengganu River Estuary. Two sampling was conducted during this study. Water samples were collected during pre-monsoon season (10 September 2007) and Northeast monsoon ( 16 November 2007). 10 stations were chosen for pre-monsoon while 9 stations in monsoon. Orthophosphate was detennined by Acid Ascorbic Method while total phosphorus by Persulfate Digestion Method. For pre-monsoon, average mean concentration orthophosphate was 2.219 ± 0.979 µM. Highest concentration was detected at Station 8 which 3.618 µM and lowest was 1.145 µM at Station 10. Average mean concentration total phosphorus was 3.958 ± 0.637 µM. Station 7 has the highest concentration with 4.619 µM while lowest 2.653 µM at Station 10. For monsoon, average mean concentration orthophosphate was 1.125 ± 0.109 µM. Highest concentration is Station 9 which 1.277 µM and lowest was 0.953 µM at Station I.