期刊
SENSORS AND ACTUATORS B-CHEMICAL
卷 147, 期 1, 页码 31-36出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.snb.2010.03.013
关键词
Optode; Cyanide ion; Ionic liquid; Cobalt(III) Schiff base
资金
- Shiraz University Research Council
A new cyanide optode was designed using [N',N'-bis(salicyliden)-2,3-diaminopyridine]tributylphosphine cobalt(III) percholorate monohydrate complex, which was coated on transparent triacetylcellulose film as membrane. The reduction in the absorbance value of the optode at the maximum wavelength of 380 nm was related to cyanide concentration in aqueous samples. The sensitivity of the method was improved by using room temperature ionic liquid, 1-butyl-3-methylimidazolium hexafluorophosphate, [C4MIM][PF6], introduced in constructing the optode membrane. The linear dynamic range for the determination of cyanide was 1.0 x 10(-5) to 2.5 x 10(-4) M with a limit of detection of 4.2 x 10(-6) M (n = 10) and a response time range of 7-10 min. The optode was successfully applied for the determination of cyanide in drinking water. (c) 2010 Elsevier B.V. All rights reserved.
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