Determination of cationic surfactants in water samples by their enhanced resonance light scattering with azoviolet

  title={Determination of cationic surfactants in water samples by their enhanced resonance light scattering with azoviolet},
  author={Chuanxiao Yang and Yuan Fang Li and Cheng Zhi Huang},
  journal={Analytical and Bioanalytical Chemistry},
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… 
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