Abstract.
A simple assay of cationic surfactants in water samples was developed based on the measurements of enhanced resonance light scattering (RLS). At pH 6.09 and ionic strength 0.03 M, the interactions of azoviolet (AV) with cationic surfactants, including zephiramine (Zeph) and cetyl trimethyl ammonium bromide (CTMAB), result in enhanced RLS signals characterized by the peaks of 470.0, 485.0 and 495.0 nm. The enhanced RLS intensity is proportional to the concentration of cationic surfactant of Zeph in the range of 0.2~6.0×10–6 M, and to that of CTMAB in the range of 0.4~4.8×10–6 M. The limit of determination (3σ) is 2.1×10–8 M and 3.8×10–8 M for the two surfactants, respectively. Determinations of cationic surfactants in synthetic and tap water samples were successfully made with a recovery of 90.5~108.6%.
Article PDF
Similar content being viewed by others
Explore related subjects
Discover the latest articles, news and stories from top researchers in related subjects.Avoid common mistakes on your manuscript.
Author information
Authors and Affiliations
Additional information
Electronic Publication
Rights and permissions
About this article
Cite this article
Yang, C., Li, Y. & Huang, C. Determination of cationic surfactants in water samples by their enhanced resonance light scattering with azoviolet. Anal Bioanal Chem 374, 868–872 (2002). https://doi.org/10.1007/s00216-002-1527-0
Received:
Revised:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/s00216-002-1527-0