Abstract
A thiocyanate ion selective poly(aniline) solid contact electrode based on manganese complex of N,N’-bis-(4-phenylazosalicylidene)-o-phenylene diamine ionophore was successfully developed. The electrode exhibits a good linear response of 58.1 mV/decade (at 20?C ± 0.2?C, r2 = 0.998) with in the concentration range of 1 × 10–1.0 ~ 1 × 10–5.8 M thiocyanate solution. The composition of this electrode was: ionophore 0.040, polyvinylchloride 0.300, dibutylphthalate 0.660 (mass). This dibutylphthalate plasticizer provides the best response characteristics. The electrode shows good selectivity for thiocyanate ion in comparison with any other anions and is suitable for use with aqueous solutions of pH 4.0 ~ 6.0. The standard deviations of the measured emf difference were ±1.70 and ±2.01 mV for thiocyanate sample solutions of 1.0 × 10–2 M and 1.0 × 10–3 M, respectively. The stabilization time was less than 170 sec. and response time was less than 17 sec.
Highlights
The thiocyanate ion is usually present in low concentrations in human serum, saliva, and urine as a result of the digestion of some vegetables of the genus Brassica containing glucosinolates or by intake of thiocyanate-containing foods such as milk and cheese
This paper describes the construction, potentiometric characterization, and analytical application of a thiocyanate ion selective poly(aniline) solid contact electrode based on the use of a manganese chelated N,N’-bis-(4phenylazo salicylidene)-o-phenylene diamine ionophore
For DBP, the linear dynamic range of the solid contact electrode based on Mn-PASPD ionophore was 1 × 10–1.0 ~ 1.0 × 10–5.8 M and the Nernstian slopes showed 58.1 mV/decade (r2 = 0.998)
Summary
The thiocyanate ion is usually present in low concentrations in human serum, saliva, and urine as a result of the digestion of some vegetables of the genus Brassica containing glucosinolates (cabbage, turnip, kale) or by intake of thiocyanate-containing foods such as milk and cheese. Higher concentration of this ion, which is a metabolic product of cyanide, arises from tobacco smoke [1,2]. This paper describes the construction, potentiometric characterization, and analytical application of a thiocyanate ion selective poly(aniline) solid contact electrode based on the use of a manganese chelated N,N’-bis-(4phenylazo salicylidene)-o-phenylene diamine ionophore
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
