New analytical method for the determination of detergent concentration in water by fabric dyeing

Set Seng, Masakazu Kita, Reiko Sugihara

Research output: Contribution to journalArticle

5 Citations (Scopus)


A simple method of analyzing detergent concentration in water was introduced to upper level high school students. The method used an acrylic fabric in dye solutions containing different detergent concentrations. The color depth of the dyed fabric was determined using a reflection photometer. After the experiment, students were able to determine detergent concentration in water; recognize acrylic fiber's role as an organic solvent by adsorbing the neutral compound; and understand the chemical interactions between differently charged ions and between ions of the same charge.

Original languageEnglish
Pages (from-to)1803-1805
Number of pages3
JournalJournal of Chemical Education
Issue number11
Publication statusPublished - Nov 2007


ASJC Scopus subject areas

  • Chemistry(all)
  • Education

Cite this