Extraction and characterization of humic acid and fulvic acid from San Pedro, Laguna rice farm soil and from Laguna Lake sediments

Date

3-1988

Degree

Bachelor of Science in Agricultural Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Carlito R. Barril

Co-adviser

Victoria Vicente Beckett

Abstract

Humic and fulvic acids were extracted from San Pedro rice farm sail at from Lacuna Lake sediments, and these were characterized by chemical (elemental analyses) and :spectroscopic (IR and UV) methoda. The elemental (C, H & N) content of the tunic acide revealed high carbon contents, but loser H and N contents, consistent with literature data; whereas the fulvic acids have very low C, H and N contents. The UV-via spectra of the acids were generally featureless, with absorptivities increasing toward shorter wavelengths, which in characteristic of hunic substances, whereas the IR spoctra reflect the preponderance of oxygen-containing groups, i.e. COON, phenolic and alcoholic OR, and c=o, and the presence of aliphatic C-H groups; and in the case of fulvic acids only, the presence of hit silicate concentration. By and large, data in the elemental, UV and IR analyses of the humic on fulvic acids show distinct similaritien among themselves and with those in the literature.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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