Nicotine derivative optode membrane with nonactin as ionophore

Martin M F CHOI*, Karen O.P. Chung, Xiaojun Wu

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

10 Citations (Scopus)


Plasticised poly(vinyl chloride) optode membrane incorporated with nonactin as ionophore, ETH 5294 as H+-selective chromoionophore and potassium tetrakis(4-chlorophenyl)borate as anionic site, was used as a reversible sensing device for indirect determination of nicotine. Nicotine was extracted from cigarette samples and converted to its bromoethane derivative (ND+Br-) by reacting with a solution of bromoethane in ethanol. ND+Br-, in a solution of Tris (hydroxymethyl)aminomethane-HC1 buffer, was extracted into the bulk of the optode membrane and subsequently caused changes in optical absorption of the sensing layer. The pH effect, response mechanisms, response behaviour, response time, dynamic working range, detection limit, sensitivity and selectivity were discussed in detail.

Original languageEnglish
Pages (from-to)1027-1038
Number of pages12
Issue number6
Publication statusPublished - 8 Apr 2002

Scopus Subject Areas

  • Analytical Chemistry

User-Defined Keywords

  • Nicotine
  • Nonactin
  • Optode membrane


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