Surfactant sensing electrode for potentiometric titrations

Details Surfactant sensing electrode for potentiometric titrations Surfactant sensing electrode for potentiometric titrations

1987-10-13

1989-03-07

Tung, T.

Chemistry: electrical and wave energy

Processes and products

204405, 204418, 422 75, G01N 2746

Patent

active

048103314

ABSTRACT:
A coated-wire electrode for potentiometrically titrating surfactant molecules having more than ten carbon atoms includes an electrically-conductive core coated with a semipermeable membrane. The membrane matrix includes a polymer a plasticizer and an ion-exchanger material consisting essentially of dimidium bromide-disulphine blue in suitable proportions to be surfactant selective. The membrane is responsive to anionic, cationic and amphoteric surfactants as well as alkoxylated nonionic surfactants.

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