Distribution of cadmium, chromium, copper, iron and zinc in surface and bottom sediments from West Bay of Laguna De Bay

Date

11-1991

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Aloysius U Baes

Abstract

Surface and bottom sediments were collected from three sampling sites from November, 1990 to January 1991 at one month intervals. The samples were analyzed for cadmium, chromium, copper, iron and zinc concentrations by atomic absorption spectrophotometry. Average concentrations of metal ions in the sediment ranged from 0.662 to 68.893 ppm with zinc being the most concentrated and cadmium the least. Differences in the metal ion concentration levels on the surface and bottom layers were significant for chromium, copper, iron and zinc with the surface containing more of these ions. The sediments are rich in organic matter with an average value 5.03%. The sediment in the West Bay area contains more clay and silt-size fractions and a very small amount of sand. Copper and zinc showed a significant positive correlation with both organic matter and clay suggesting that copper and zinc are bound strongly to organic matter and clay. The data suggest that leaching of heavy metals through the sediment layers is governed by strength of bonding with organic matter and clay particles.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

This document is currently not available here.

Share

COinS