Abstract / Excerpt:

Objectives: This study was conducted to set up a baseline data profile on the quantity of water of Tamugan River. 1) To determine the pH, temperature, levels of dissolved oxygen and biochemical oxygen demand and concentrations of nitrates and phosphate of water samples from Tamugan River. 2) To determine if there are significant differences in terms of levels of dissolved oxygen and biochemical oxygen demand and concentration of nitrates and phosphates between the two sampling stations considered in this study. 3) TO recommend possible classification of Tamugan River according to DENR Administration Order No. 34.

Methodology: This chapter presents the different procedures used in the analysis of water samples from Tamugan River. Preliminary steps for the sample collection and sampling periods and stations are presented here as well.

Conclusions: The study was conducted to establish a baseline profile of the water quality of Tamugan River for purposes of classification. The duration of the study was from September 26, 2002 until December 5, 2002. Six sampling were made in order to analyze the following water quality parameters: pH, temperature, dissolved oxygen (DO) and biochemical oxygen demand (BOD) levels, concentration of nitrates and phosphates. From the study conducted , the following conclusions can be drawn. (1) The mean pH level is 8.11+0.03 in station 1 and 7.96+0.02 in station 2. The mean temperature is 24.3'C+ in station 1 and 23.7'C in station 2. The mean DO level is 7.58 mg/L+0.13mg/L in station 1 and 7.63mg/L+0.11 mg/L in station 2. The mean BOD level is 0.45mg/L+0.24mg/L in station 1 and 1.50 m/L+1.04 mg/L in station 2. Mean NO3-N level is 0.1582 mg/L+7.8x103 mg/L in station 1 and 0.1860 mg/L+2.3x10-2 mg/L in station 2. Finally, the mean PO43-P level is 0.0888mg/L+3.7x10-3mg/L in station 1 and 0.0523mg/L+1.2x10-2mg/L. (2) There are significant differences between sampling station 1 and 2 in terms of BOD levels, nitrates as nitrogen and phosphates as phosphorus concentration. (3) The recommended classification for Tamugan River is Class A freshwater body.

Info

Source Institution	Ateneo de Davao University
Unit	Natural Science and Mathematics
Authors	Servidad, Luis Paolo.
Page Count	86
Place of Publication	Davao City
Original Publication Date	March 1, 2003
Tags	Chemistry, Dissertations, Research, Water Analysis, Water Quality

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