Levels of lead in sediment and mollusks (Curbicula manilensis and Thiara sp.) from Laguna De Bay

Date

5-1985

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Carlito R. Barril

Abstract

Lead levels in mollusks from Bay and Mayondon and sediments from Alabang were analyzed by atomic absorption spectroscopy and the results showed that the mean values were 0.068 and 0.067 ppm Pb for the mollusks Curbicula manilensis and Thiara AE., respectively, from Bay and 0.043 and 0.040 ppm Pb from Mayondon. Analysis of variance showed that the effect of the place of sampling is highly significant both at 1% and 5% probability levels. The difference could be attributed to the greater number of tributary rivers going through the lake from Bay. No significant differences were observed between mollusk samples and the date of sampling. Also, interaction was found out to be in-significant.

In sediments, the mean values ranged from 10.-48 to 14.14 ppm Pb. The highest Pb concentration was associated with the month of February, the lowest in March. Statistical analysis of the results revealed that variation among sampling

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1985 C4 P39

Document Type

Thesis

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