Next Article in Journal
Quartz Crystal Microbalance Coated with Sol-gel-derived Thin Films as Gas Sensor for NO Detection
Previous Article in Journal
Chemical Sensors – from Molecules, Complex Mixtures to Cells – Supramolecular Imprinting Strategies
Article Menu

Export Article

Open AccessArticle
Sensors 2003, 3(9), 393-403;

PVC Based Selective Sensors for Ni2+ Ions Using Carboxylated and Methylated Porphine

Central Building Research Institute Roorkee – 247 667 (Uttranchal) India
Author to whom correspondence should be addressed.
Received: 10 August 2003 / Accepted: 24 August 2003 / Published: 11 September 2003
Full-Text   |   PDF [122 KB, uploaded 20 June 2014]   |  


Poly vinylchloride (PVC) based membranes of 4,4',4'',4'''-21H,23H-porphine–5,10,15,20 –tetrayl) tetrakis (benzoic acid) (TBAP) and 2,3,7,8,12,13,17,18-octamethyl - 21H, 23H-porphine (OMP) were prepared using dibutyl phthalate (DBP), dioctylphthalate (DOP), dibutyl(butyl)phosphonate (DBBP) and 1-chloronaphthalene (CN) as plastcizing solvent mediators and sodium tetraphenylborate (NaTPB) as an anion excluder for Ni2+ selective sensors. TBAP based membrane exhibits linearity over a wide concentration range 2.0x10-6–1.0x10-1M (0.12 – 5.8x103ppm) with a slope of 29.6 mV/decade of activity while OMP based membrane showed linear potential response in the concentration range 1.0x10-5 –1.0x 10-1M (0.60 – 5.8x103ppm) with a Nernstian slope of 29.0 mV/decade of activity. The electrode assembly works between pH 2.0 – 7.0, exhibits a fast response time of 10-15s and performed satisfactorily over a period of six months with good reproducibility. Excellent selectivity of the order of 10-3 over a number of cations and quantitative determination of Ni2+ in effluents discharged from electroplating industry demonstrates the utility of the proposed sensor. The electrode assembly was also used as an indicator electrode in the potentiometric titration of Ni2+ with EDTA. View Full-Text
Keywords: porphine; Sensors; Ion-selective Electrodes; Nickel porphine; Sensors; Ion-selective Electrodes; Nickel

Figure 1

This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

Share & Cite This Article

MDPI and ACS Style

Singh, L.P.; Bhatnagar, J.M. PVC Based Selective Sensors for Ni2+ Ions Using Carboxylated and Methylated Porphine. Sensors 2003, 3, 393-403.

Show more citation formats Show less citations formats

Related Articles

Article Metrics

Article Access Statistics



[Return to top]
Sensors EISSN 1424-8220 Published by MDPI AG, Basel, Switzerland RSS E-Mail Table of Contents Alert
Back to Top