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A New PVC Membrane Ion Selective Electrode for Determination of Cationic Surfactant in Mouthwash
Author(s) -
Devi Sunaina,
Chattopadhyaya Mahesh C.
Publication year - 2012
Publication title -
journal of surfactants and detergents
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.349
H-Index - 48
eISSN - 1558-9293
pISSN - 1097-3958
DOI - 10.1007/s11743-011-1305-0
Subject(s) - cetylpyridinium chloride , chemistry , potentiometric titration , pulmonary surfactant , electrode , ion selective electrode , quinhydrone electrode , cationic polymerization , membrane , potentiometric sensor , inorganic chemistry , chloride , selectivity , reference electrode , electrochemistry , organic chemistry , biochemistry , catalysis
A new membrane electrode was prepared, using cetylpyridinium chloride based Sn(IV) phosphate (CPC‐SnP) as the electroactive material. The electrode exhibits a linear response for the surfactant cetylpyridinium chloride (CPC) in the concentration range 5.0 × 10 −3 –5.0 × 10 −6 mol dm −3 with a slope as a 29.1 mV/decade change in the concentration. The working pH range and the response time for the electrode are 2–6 and 30 s respectively. Selectivity coefficients for several cations were determined. The determination of CPC in mouth wash gave results that compare favorably with those obtained by the two phase titration method. This electrode has been utilized as an indicator electrode in the potentiometric titration of cationic surfactant CPC as well as in direct determination of CPC.