Water quality analyses of Laguna de Bay at Putatan, Muntinlupa with notes on the heavy metal content of water and fish caught in the lake

Date of Publication

1995

Document Type

Bachelor's Thesis

Degree Name

Bachelor of Science in Biology

Subject Categories

Biology

College

College of Science

Department/Unit

Biology

Abstract/Summary

The physico-chemical properties of Laguna de Bay and heavy metal content (lead and cadmium) of water and muscles of Tilapia sp. and Arius sp. were determined for a period of five months. Physico-chemical properties of water such as temperature, pH, salinity, conductivity, total solids and dissolved oxygen were analyzed. Heavy metal content of water and muscles of fishes were measured. The temperature hardly fluctuated and ranged between 27-30.3 degrees celcius. The total solid content ranged between 0.04-0.45 mg/L. The pH varied little and had a ranged between 6.28-7.23 units. Salinity values had a average between 0.00-0.05 g/L. Conductivity extended from 6500-11000 umhos/cm. Dissolved oxygen content was between 6.90-13.15 mg/L. The ranged of the results obtained in the study still fall within the criteria for Class C waters set by the Department of Environment and Natural Resources. However, the findings on lead and cadmium content in water exceeded the criteria set by the DENR which was 0.01 mg/L for cadmium and 0.05 mg/L for lead. The mean values were as follows: 0.10-0.23 mg/L for cadmium and 0.27-0.85 mg/L for lead. For muscles of Tilapia sp. and Arius sp., there was no criteria yet.

Abstract Format

html

Language

English

Format

Print

Accession Number

TU06917

Shelf Location

Archives, The Learning Commons, 12F, Henry Sy Sr. Hall

Physical Description

67 leaves ; Computer printout

Keywords

Tilapia—Heavy metal content--Philippines--Laguna de Bay; Water quality--Philippines--Laguna de Bay

Embargo Period

1-18-2021

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