抄録
An optical sensing membrane for detection of cationic surfactants was developed. The optical sensing membrane is 2-nitrophenyl octyl ether-plasticized poly(vinyl chloride) membrane incorporating tetrabromophenolphthalein ethyl ester (TBPE). The response of the optical membrane to cationic surfactants was a result of extraction of cationic surfactant into the PVC membrane. The protonated TBPE deprotonates forming an ion associate with the extracted cationic surfactant; simultaneously, the deprotonation of the TBPE is accompanied by a spectral change. Namely, the extracted cationic surfactant changes color of the membrane from yellowish green to blue (absorption maximum: 622 nm). The optical membrane responds to cationic surfactants such as Zephiramine and cetyltrimethylammonium bromide in the concentration range from 1 μM to 100 μM.
本文言語 | English |
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ページ(範囲) | 441-448 |
ページ数 | 8 |
ジャーナル | Analytical Letters |
巻 | 40 |
号 | 3 |
DOI | |
出版ステータス | Published - 2007 2 |
ASJC Scopus subject areas
- Analytical Chemistry
- Biochemistry
- Spectroscopy
- Clinical Biochemistry
- Biochemistry, medical
- Electrochemistry