Physico-chemical analyses of bottom sediment columns of Laguna de Bay : organic matter, total kjeldahl nitrogen, ammonia-nitrogen, total phosphorous and ortho- phosphate

Date

3-1997

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Carlito R. Barril

Abstract

ABSTRACT

Oarde, Divinna Rogue!, College of Arts and Sciences, University of the Philippines at Los Banos, March, 1997. Physico-Chemical Analyses of Bottom Sediment Columns of Laguna de Bay: Organic matter, Total kjeldahl Nitrogen. Ammonia-Nitrogen, Total Phosphorus and Ortho-Phosphate.

Adviser Dr. Carlito R. Barril

Sediment columns from East, Central, West, and South bays of Laguna de Bay were collected and subjected to chemical analyses. The different parameters determined were organic matter, total Kjeldahl nitrogen, ammonia-N, total phosphorus and ortho-phosphates .

The average concentration of organic matter at the top layer of the sediment was 11 38 % which was almost constant throughout the column. TKN had an average of 1.14 x 103 mg/kg at the top layer and it increased with depth in the case of East and South bay, but showed little variation in Central and West bay. Ammonia-N content in the top layer showed an average of 7.90 x 10' mg,/kg which also increased with depth in all the sites, while total-P in the top layer showed an average of 1.95 x 10' mg/kg which also decreased with depth. On the other hand, ortho-P content with an average of 1.24 x 10' mg/kg showed increasing amount with depth, except for South bay.

The highest values of OM and ammonia-N were observed in East bay with a mean of 12.29 % and 1.41 x 102 mg/kg, respectively. While high TKN, total-P and ortho-P levels were observed in West bay with a mean of 1.47 x 103 mg/kg, 2.74 x 10' mg/kg and 1 38 x 10' mg/kg, respectively. The amount of OM is within the range 9 - 38 % for lakes given by Round.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1997 C4 O27

Document Type

Thesis

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