Tensammetric studies of the separation of surfactants: Part 1. Investigation of sources of error in precipitation of non-ionic surfactants with modified Dragendorff reagent

✍ Scribed by Bogdan Wyrwas; Andrzej Szymanski; Zenon Lukaszewski

• Publisher: Elsevier Science
• Year: 1993
• Tongue: English
• Weight: 582 KB
• Volume: 278
• Category: Article
• ISSN: 0003-2670
• DOI: 10.1016/0003-2670(93)80097-5

✦ Synopsis

Precipitation of surfactants with modified Dragendorff reagent, being a part of the bismuth active substance (BiAsI standard procedure, was investigated with the use of adsorptive stripping tensammetry and an indirect tensammetric method. Triton X-100 was used as a representative surfactant. The washing step with glacial acetic acid, part of the investigated procedure, was found to be a serious source of loss of precipitate and'therefore the main source of error of determination 'in the BiAS procedure. The concentration of surfactant in the filtrate and adsorptive losses on the filter were also determined.