Visible spectrophotometric determination of heavy metals in commercial soaps
Date of Publication
1994
Document Type
Bachelor's Thesis
Degree Name
Bachelor of Science in Chemistry
Subject Categories
Chemistry
College
College of Science
Department/Unit
Chemistry
Thesis Adviser
Eduardo Gacho
Defense Panel Chair
Anamy Paano
Abstract/Summary
The amount of Zinc, Copper and Iron content in different locally manufactured brands of soaps namely Coco soap, Perla soap, Johnsons baby soap and Safeguard were determined using Hitachi U-2000 UV-Visible spectrophotometer. Elimination of possible interference was carried out by carefully adjusting the pH, precipitation and extraction of metals other than the analyte and proper selection of working wavelengths. The metals were complexed with appropriate ligands zinc with dithizone at \max = 555.5 nm., copper with EDIA at \max = 596.0 nm. and iron with thiocyanate at \max = 474.0 nm. The concentrations of these metals were obtained from their respective standard calibration curves. Among the four soaps, Coco soap has the highest concentration of iron, copper and zinc.
Abstract Format
html
Language
English
Format
Accession Number
TU17508
Shelf Location
Archives, The Learning Commons, 12F, Henry Sy Sr. Hall
Physical Description
vii, 52 leaves ; illustrations ; 28 cm.
Keywords
Spectrophotometry; Heavy metals; Metals; Soap
Recommended Citation
Chan, C. A. (1994). Visible spectrophotometric determination of heavy metals in commercial soaps. Retrieved from https://animorepository.dlsu.edu.ph/etd_bachelors/2989
