Levels of copper and lead in surface water and in water hyacinth (Eichhornia crassipes (Mart.) Solms) from different tributaries of Laguna de Bay

Date

5-1990

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Lilia S. P. Madamba

Abstract

Surface water and water hyacinth, Eichhornia crassipes (Mart,) Solms, were collected from the mouths of Lumban, Sta. Cruz, San Juan, San Cristobal, Biftan and San Pedro rivers at approximately four-week intervals from June to September, 1909. The samples were analyzed for copper and lead concentrations by atomic absorption spectrophotometry . Concentrations of metal in surface water ranged from ,.001 to 0.041 ppm for copper and 0.004 to 0.031 ppm for lead. spatial and seasonal variations in aqueous concentrations of copper are highly significant at 17. level. No significant differences, however, were observed for lead. the mean concentrations for both metals were highest roots, less in leaves and least in stems, with mean values of 05.75, 26.90 and 23.92 ppm, respectively for copper and 14.73, 7.10 and 6.56 ppm, respectively for lead. Spatial and seasonal variations in plant tissue concentrations for both metals are highly significant at 1% level.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1990 C4 M46

Document Type

Thesis

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