Determination of anionic surfactants using newly synthesized n-dialkyl-2,2'-thiacyanine dyes

• GOTO Akinori

  Department of Chemistry, Faculty of Science, Okayama University

• OSHIMA Mitsuko

  Department of Chemistry, Faculty of Science, Okayama University

• TAKAYANAGI Toshio

  Department of Chemistry, Faculty of Science, Okayama University

• MOTOMIZU Shoji

  Department of Chemistry, Faculty of Science, Okayama University

Bibliographic Information

Other Title

• シアニン系新規合成試薬を用いる陰イオン界面活性剤の定量
• シアニンケイ シンキ ゴウセイ シヤク オ モチイル インイオン カイメン カッセイザイ ノ テイリョウ

Abstract

For the spectrophotometric determination of anionic surfactants in aqueous media, cationic dyes with a 2,2'-thiacyanine skeleton were newly synthesized. Carbon numbers of 4 and 6 in the n-dialkyl chain combined at the N position of 2,2'-thiacyanine are new compounds. Fundamental information, such as the pK_a values, was obtained. These two compounds and purchased diethyl- and dipropyl-2,2'-thiacyanine were examined for the spectrophotometric determination of an anionic surfactant, DBS. Of these, 3,3'-dihexyl-2,2'-thiacyanine (DHT) showed the best sensitivity. The calibration graph for DBS with DHT was linear up to 1×10⁻⁵ M, and the detection limit was 4×10⁻⁷ M. By a hydrophobic interaction, even a cationic surfactant, Zephiramine, and a nonionic surfactant, Triton X-100, could react with DHT. The ion-association constants for these surfactants with DHT were obtained.<br>

Journal

• BUNSEKI KAGAKU

  BUNSEKI KAGAKU 53 (9), 919-923, 2004

  The Japan Society for Analytical Chemistry

Keywords

• <i>n</i>-dialkyl-2,2'-thiacyanine dyes
• surfactants
• ion association
• spectrophotometry

Details

• CRID: 1390001204354099328
• NII Article ID: 110002905448
• NII Book ID: AN00222633
• DOI: 10.2116/bunsekikagaku.53.919
• COI: 1:CAS:528:DC%2BD2cXnvVagu7Y%3D
• NDL BIB ID: 7093776
• ISSN: 05251931
• Web Site: https://ousar.lib.okayama-u.ac.jp/14130
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I7093776
• Web Site: http://www.jstage.jst.go.jp/article/bunsekikagaku/53/9/53_9_919/_pdf
• Web Site: http://dl.ndl.go.jp/info:ndljp/pid/10895868
• Text Lang: ja
• Data Source:
  • JaLC
  • IRDB
  • NDL
  • Crossref
  • NDL-Digital
  • CiNii Articles
  • KAKEN
• Abstract License Flag: Disallowed