Determination of thickness and rupture pressure for aqueous foam films. Part 1.—Films stabilized by anionic surfactants

1995 ◽  
Vol 91 (23) ◽  
pp. 4251-4260 ◽  
Author(s):  
Ian J. Black ◽  
Thelma M. Herrington
Keyword(s):  
Anionic Surfactants ◽  
Foam Films ◽  
Aqueous Foam ◽  
Rupture Pressure

scholarly journals Potentiometric Surfactant Sensor Based on 1,3-Dihexadecyl-1H-benzo[d]imidazol-3-ium for Anionic Surfactants in Detergents and Household Care Products

Molecules ◽  
2021 ◽  
Vol 26 (12) ◽  
pp. 3627
Author(s):  
Nikola Sakač ◽  
Dubravka Madunić-Čačić ◽  
Dean Marković ◽  
Lucija Hok ◽  
Robert Vianello ◽  
...  
Keyword(s):  
Anionic Surfactants ◽  
Negative Impact ◽  
Ion Pair ◽  
Two Phase ◽  
Potentiometric Response ◽  
Titration Curves ◽  
Signal Change ◽  
Nernstian Slope ◽  
Good Agreement

A 1,3-dihexadecyl-1H-benzo[d]imidazol-3-ium-tetraphenylborate (DHBI-TPB) ion-pair implemented in DHBI-TPB surfactant sensor was used for the potentiometric quantification of anionic surfactants in detergents and commercial household care products. The DHBI-TPB ion-pair was characterized by FTIR spectroscopy and computational analysis which revealed a crucial contribution of the C–H∙∙∙π contacts for the optimal complex formation. The DHBI-TPB sensor potentiometric response showed excellent analytical properties and Nernstian slope for SDS (60.1 mV/decade) with LOD 3.2 × 10−7 M; and DBS (58.4 mV/decade) with LOD 6.1 × 10−7 M was obtained. The sensor possesses exceptional resistance to different organic and inorganic interferences in broad pH (2–10) range. DMIC used as a titrant demonstrated superior analytical performances for potentiometric titrations of SDS, compared to other tested cationic surfactants (DMIC > CTAB > CPC > Hyamine 1622). The combination of DHBI-TPB sensor and DMIC was successfully employed to perform titrations of the highly soluble alkane sulfonate homologues. Nonionic surfactants (increased concentration and number of EO groups) had a negative impact on anionic surfactant titration curves and a signal change. The DHBI-TPB sensor was effectively employed for the determination of technical grade anionic surfactants presenting the recoveries from 99.5 to 101.3%. The sensor was applied on twelve powered samples as well as liquid-gel and handwashing home care detergents containing anionic surfactants. The obtained results showed good agreement compared to the outcomes measured by ISE surfactant sensor and a two-phase titration method. The developed DHBI-TPB surfactant sensor could be used for quality control in industry and has great potential in environmental monitoring.

scholarly journals Polarographic determination of anionic surfactants by the desorption potentials

1972 ◽  
Vol 21 (4) ◽  
pp. 517-521 ◽  
Author(s):  
Noriko SHINOZUKA ◽  
Hajime SUZUKI ◽  
Shigeo HAYANO
Keyword(s):  
Anionic Surfactants ◽  
Polarographic Determination

scholarly journals An Automated Determination of Anionic Surfactants in Detergents

1979 ◽  
Vol 28 (6) ◽  
pp. 398-402
Author(s):  
Tetsuyuki TSUDA ◽  
Makoto YAMANAKA
Keyword(s):  
Anionic Surfactants ◽  
Automated Determination

scholarly journals Determination of Surfactants in Environmental Samples. Part II. Anionic Compounds

2013 ◽  
Vol 20 (2) ◽  
pp. 331-342 ◽  
Author(s):  
Ewa Olkowska ◽  
Marek Ruman ◽  
Anna Kowalska ◽  
Żaneta Polkowska
Keyword(s):  
Environmental Samples ◽  
Anionic Surfactants ◽  
Solid Phase ◽  
Total Concentration ◽  
Polar Group ◽  
Surface Active Agents ◽  
Assisted Extraction ◽  
Surface Active ◽  
Living Organisms

Abstract Surface active agents (SAA) with negative charge of polar group are named as anionic compounds. They are the main constituent of most products containing synthetic surfactants. The linear alkylbenzene sulfonates (LAS), alkyl ethoxysulfates (AES) and alkyl sulfates (AS) are typically applied from this class of compounds. Those surfactants are ingredients of household detergents and cleaners, laundry detergents, cosmetic etc. Moreover they can be applied in the paper, textile and tanning industry as optical brighteners, dispersant, wetting and suspending agents. They can be substrates in the formulation of different products like dyes, pigments, pesticides, exchange resins, plasticizers and pharmaceuticals. Anionic surfactants after use are passed into sewage-treatment plants, where they are partially degraded and adsorbed to sewage sludge (applied in agriculture fields). Finally, the anionic SAA or their degradation products are discharged into surface waters and onto bottom sediments, soils or living organisms. Therefore, it is important (widely application, bioaccumulation, toxicity for living organisms) to investigate the environmental fate of those class of compounds in more details. This research involves determination the concentration of anionic surfactants with use appropriated analytical techniques in environmental samples The official methodology for determination of anionic SAA in liquid samples is based on the ion-pair reaction of these analytes compounds with methylene blue (MB) and an extraction with toxic solvent chloroform. During isolation step of anionic compounds from solid samples are employed Soxhlet and ultrasonic-assisted extraction techniques with use of methanol or mixture of other organic solvents as extraction medium. To overcome disadvantages of those traditional techniques were applied following techniques at sample preparation step from liquid and solid matrices: solid-phase extraction (SPE) and solid-phases microextraction (SPME); accelerated solvent extraction (ASE), microwave-assisted extraction (MAE), supercritical fluid extraction (SFE), respectively. For estimate total concentration of anionic analytes in extracts the spectrophotometric technique is used (as official regulation). For determination concentration of individual analytes were applied gas (derivatization step requires) and liquid chromatography mainly with mass spectrometry technique. The presence of anionic surface active agents was confirmed in various ecosystems (liquid and solid environmental samples).

scholarly journals Determination of anionic surfactants in an aqueous medium by differential photometric titration method.

1993 ◽  
Vol 42 (7) ◽  
pp. T105-T111 ◽  
Author(s):  
Shoji MOTOMIZU ◽  
Yunhua GAO ◽  
Shinsuke ISHIHARA ◽  
Kouji UEMURA ◽  
Kazuyuki DAITO ◽  
...  
Keyword(s):  
Aqueous Medium ◽  
Anionic Surfactants ◽  
Titration Method ◽  
Photometric Titration
Sign in / Sign up

Export Citation Format

Share Document