An Optochemical Sensor for the Determination of Divalent Transition Metal Ions Based on a Reactive Dye
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
1998, v.11 no.4, pp.305-310
Kim, Sung Bae
Lee, Hyuk Jin
Kim, Jin Mog
Shin, Doo Soon
Cha, Geun Sig
Nam, Hakhyun
Kim,
S. B., Lee,
H. J., Kim,
J. M., Shin,
D. S., Cha,
G. S., &
Nam,
H.
(1998). An Optochemical Sensor for the Determination of Divalent Transition Metal Ions Based on a Reactive Dye. , 11(4), 305-310.
Abstract
A reactive dye synthesized with an amine containing Eriochrome Black T derivative and cynauric chloride was immobilized on a cellulose membrane to construct an optical sensor for the detection of divalent transition metal ions in aqueous solution. The response of this reactive dye-based optical sensor was as sensitive as that of Eriochrome Black T in solution phase. Its typical detection limits for $Zn^{2+}$ and $Co^{2+}$ were $6.3{\times}10^{-5}mol/l$ and $2.5{\times}10^{-4}mol/l$, respectively. No loss in the sensitivity of reactive dye-based sensor was observed even the pH of flowing solutions continually varied for an extended period of time.
- keywords
-
optical sensor,
optode,
reactive dye,
cellulose membrane,
Eriochrome Black T