Abstract
A selective membrane electrode based on surfactant modified zeolite showed very good selectivity for thiocyanate anions over a wide variety of common inorganic and organic anions. The sensor displayed a near Nernstian slope of −58.9±0.9mV per decade of the thiocyanate concentration. The working concentration range of the electrode was 1.00×10−6 to 1.10×10−1M with a detection limit of 8.3×10−7M thiocyanate. The response of the sensor to thiocyanate remained constant in the pH range of 2.0–10.1. The best performance was obtained with a membrane composition in the ratio of 25.5% PVC, 64.5% dioctyl phthalate and 10% surfactant modified zeolite ZSM-5. The sensor was highly selective for thiocyanate over a wide variety of other anions and exhibited a rapid response time of <10s over a period of 2months with good reproducibility. Thus, this novel sensor may be applied as an indicator electrode in the argentometric titration of thiocyanate.
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.
