Adsorptive stripping tensammetry of oxyethylene-oxypropylene block copolymers

✍ Scribed by Andrzej Szymanski; Zenon Lukaszewski

• Publisher: John Wiley and Sons
• Year: 1994
• Tongue: English
• Weight: 909 KB
• Volume: 6
• Category: Article
• ISSN: 1040-0397
• DOI: 10.1002/elan.1140061130

✦ Synopsis

Abstract

The behavior of oxyethylene‐oxypropylene block copolymers (OEOPBC) of EPE type was investigated. Most of the investigations were performed with OEOPBC having 30 oxypropylene subunits and different lengths of oxyethylene chain. The dependences of the peak height on the concentration of surfactant, preconcentration time, and preconcentration potential were examined. OEOPBC partially behave in agreement with the general scheme of the behavior of ethoxylates, formulated on the basis of previous studies and predicting two types of behavior. The scheme has been supplemented with the third type of behavior on the basis of this work: a single peak is formed whose potential is stable, independent of changes of the surfactant concentration, preconcentration time, and potential. All the investigated OEOPBC give peaks suitable for analytical purposes.