title: Determination of a cationic surfactant with naphthalene black 12B by the resonance light scattering technique.
abstract: A new determination method for a cationic surfactant, zephiramine (Zeph), was developed with resonance light scattering (RLS) technique, based on the interaction of naphthalene black 12B with Zeph. The resonance light scattering (RLS) and UV characteristics of interaction between naphthalene black 12B and Zeph were studied. The RLS intensity of naphthalene black 12B at 363 nm was greatly enhanced in the presence of Zeph at pH 6.0. The enhanced RLS is proportional to the concentration of Zeph in the range of 3.20 x 10(-7) - 1.44 x 10(-5) mol L(-1). The limit of detection was 8.8 x 10(-8) mol L(-1). The proposed method was applied to the determination of Zeph in synthetic and spiked water samples with the recovery of 96.2-104% and RSD of 1.1-2.5%.
authors.affiliation: Henan Key Laboratory for Environmental Pollution Control, College of Chemistry and Environmental Science, Henan Normal University, Xinxiang 453007, P R China. slfeng@eyou.com
authors.forename: Suling
authors.initials: S
authors.lastname: Feng
authors.forename: Jin
authors.initials: J
authors.lastname: Wang
authors.forename: Jing
authors.initials: J
authors.lastname: Fan
mesh_terms: D001548:Benzalkonium Compounds / Q000032:analysis*; D002412:Cations; D004396:Coloring Agents / Q000737:chemistry*; D006863:Hydrogen-Ion Concentration; D009281:Naphthalenes / Q000737:chemistry*; D012542:Scattering, Radiation; D012680:Sensitivity and Specificity; D013501:Surface-Active Agents / Q000032:analysis*; D014466:Ultraviolet Rays; D014867:Water / Q000737:chemistry
chemical_list: D001548:Benzalkonium Compounds; D002412:Cations; D004396:Coloring Agents; D009281:Naphthalenes; D013501:Surface-Active Agents; D014867:Water; C005883:zephiramine