TY - JOUR
T1 - Nicotine derivative optode membrane with nonactin as ionophore
AU - CHOI, Martin M F
AU - Chung, Karen O.P.
AU - Wu, Xiaojun
N1 - Funding Information:
The authors express their sincere appreciation to Dr W.L. Chan and Professor R.C. Lin of the Hong Kong Polytechnic University for their guidance in synthesising the nicotine derivative. Many thanks are also given to Y.F. Lam of the Hong Kong Polytechnic University for his assistance in obtaining the MS and 1 HNMR spectra. The work described in this paper was partially supported by a grant from the Research Grants Council of the Hong Kong Special Administrative Region, China (Project No. HKBU 2058/98P).
PY - 2002/4/8
Y1 - 2002/4/8
N2 - 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.
AB - 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.
KW - Nicotine
KW - Nonactin
KW - Optode membrane
UR - http://www.scopus.com/inward/record.url?scp=0037041460&partnerID=8YFLogxK
U2 - 10.1016/S0039-9140(01)00590-2
DO - 10.1016/S0039-9140(01)00590-2
M3 - Article
AN - SCOPUS:0037041460
SN - 0039-9140
VL - 56
SP - 1027
EP - 1038
JO - Talanta
JF - Talanta
IS - 6
ER -