Analysis of methylene blue active subtances in the waters and sediments of Laguna de Bay

Date

10-1996

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Carlito R. Barril

Abstract

The levels of anionic surfactants in Laguna de Bay were determined using the Methylene Blue Active Substance (MBAS) method for the water samples/  and combined Soxhlet extraction-MBAS method for the suspended solid and sediment samples.  The percent recovery was found to be 85% for the former and 75% for the latter.

Anionic surfactants (reported as MBAS) in the water had the following means values for the four main sites.  West bay (WB), 0.206 mg/L; South bay (SB) 0.190 mg/L; East bay (EB), 0.158 mg/L; and Central bay (CB) 0.087 mg/L.  The amount present is suspended solid showed average values which ranged from 0.021 to 0.035.  The MBAS content of the sediments were: WB, 0.024 mg/kg, SB, 0.018 mg/kg, EB 0.014 mg/kg, and CB 0.014 mg/kg.

Values obtained for the water and sediment compartments showed almost the same trend: WB > SB > EB > CB.  Statistical analysis of the data for each compartment  indicated significant among the main sampling sites.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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