Comparative analysis of phosphorus content of common powdered laundry detergents and extent of phosphorus adsorption by sediments from Laguna de Bay

Date

6-1996

Degree

Bachelor of Science in Chemistry

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Carlito R. Barril

Abstract

The amount of total phosphorus in different powdered laundry detergents were determined by spectrophotometric method. Samples were prepared by dissolving known amount of detergents in distilled water. The samples used for the analysis were Ajax, Perla, Tide, Mr. Clean, Breeze, Sunlight, and Superwheel. For the different detergents, phosphorus content ranged from 1.33% to 6.80% with Perla giving the highest amount of total phosphorus (6.80%) and Superwheel containing the least (1.33%). Statistical analysis shows significant variation in the phosphorus content of the different detergents. A preliminary study on the partition of total phosphorus between water and sediment obtained from Laguna de Bay at pH 7.0 was also conducted. 'Three known concentrations of Tide with phosphorus content ranging from 59.8 to 299 mg/1 were used. The total phosphorus adsorbed on the sediment was taken as the difference between the added total phosphorus and the total phosphorus which remained in the water. The amount of phosphorus adsorbed on sediment ranged from 98.4 % to 99.9% indicating almost total adsorption of phosphorus at the levels added.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

LG 993.5 1996 C4 G66

Document Type

Thesis

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