Variation of heavy metal content of Bivalves in Manila Bay

Date

4-1995

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Lilia S. P. Madamba

Abstract

Pamulaklakin, Neil M., University of the Philippines at Los Banos, 1995. Variation of Heavy Metal Content of Bivalves in Manila Bay.

Adviser Prof. Lilia S. P. Madamba

Levels of cadmium, chromium, copper, lead and zinc were determined in bivalve mollusks Perna viridis (tahong) collected from the Bataan side. Paphia undulata (kabios) and Scapharca inaequivalvis (parros) collected from Pampanga and Perna viridis (tahong), Katelvsia hiantina (halaan) and Gari truncata (parros) from the Paranaque side of Manila Bay in May and August, 1993. the samples were analyzed using an atomic absoption spectrophotometer.

S. inaequivalvis collected from Pampanga, near Batang II showed the largest amount of cadmium and lead (0.114 and 0.991 ppm respectively) compared to other species. G. truncata collected from Paranaque has the highest chromium, copper and zinc concentrations (1.709, 6.031 and 39.141 ppm respectively).

The mean metal concentrations in the bivalves obtained in May were significantly higher than those obtained in August except for lead in P. viridis and zinc in G. truncata and P. viridis which were significantly higher in August than in May.

Differences in heavy metal concentration of the bivalves of Manila Bay were attributed to the organisms' uniqueness in heavy metal uptake, storage and release and external factors such as temperature, rainfall, salinity, size,etc.

Except for the concentration of chromium in P. undulata and G. truncata, the concentrations of copper, _chromium, cadmium , lead and zinc in the edible tissue of the five bivalves were within safe limits for human consumption based on the guidelines set by the World Health Organization.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1995 C4 P36

Document Type

Thesis

This document is currently not available here.

Share

COinS