title: Resonance light scattering method for the determination of anionic surfactant with acridine orange.
abstract: The resonance Rayleigh scattering (RRS), second-order scattering (SOS) and frequency-double scattering (FDS) spectra of sodium dodecylbenzene sulfonate (SDBS) (anionic surfactant (AS)) with acridine orange (AO) system were studied. Experimental results showed that when lambda(em) = lambda(ex) = 537 nm, the RRS peak of AO was greatly enhanced with the increase of SDBS concentration at a pH range of 1.8-4.0. The linear range of the calibration curve for SDBS was 0.028-8.71 mg L(-1) with a detection limit of 8.36 microg L(-1) when the AO concentration was 2.5 x 10(-5)mol L(-1). The method has been applied to the determination of trace amount of AS in environmental water samples with satisfactory results. In addition, when lambda(em) = 321 nm and lambda(ex) = 642 nm, the intensity of FDS was proportional to the SDBS concentration ranging from 0.014 to 8.71 mg L(-1) and the correlation coefficient was 0.993 with a detection limit of 4.31 microg L(-1); when lambda(em) = 642 nm and lambda(ex) = 321 nm, the intensity of SOS was proportional to the SDBS concentration ranging from 0.050 to 8.71 mg L(-1), and the correlation coefficient was 0.993 with a detection limit of 14.9 microg L(-1).
authors.affiliation: College of Public Health, University of South China, Hengyang 421001, PR China. xiaox12001@163.com
authors.forename: Xilin
authors.initials: X
authors.lastname: Xiao
authors.forename: Yongsheng
authors.initials: Y
authors.lastname: Wang
authors.forename: Zhangming
authors.initials: Z
authors.lastname: Chen
authors.forename: Qiangxiang
authors.initials: Q
authors.lastname: Li
authors.forename: Zhihuo
authors.initials: Z
authors.lastname: Liu
authors.forename: Guirong
authors.initials: G
authors.lastname: Li
authors.forename: Changyin
authors.initials: C
authors.lastname: Lü
authors.forename: Jinhua
authors.initials: J
authors.lastname: Xue
authors.forename: Yanzhi
authors.initials: Y
authors.lastname: Li
mesh_terms: D000165:Acridine Orange / Q000737:chemistry*; D000838:Anions / Q000737:chemistry; D001557:Benzenesulfonates / Q000737:chemistry; D008027:Light; D017711:Nonlinear Dynamics; D013053:Spectrophotometry / Q000379:methods*; D013501:Surface-Active Agents / Q000032:analysis* / Q000737:chemistry*; D013696:Temperature; D013997:Time Factors
chemical_list: D000838:Anions; D001557:Benzenesulfonates; D013501:Surface-Active Agents; C001114:dodecylbenzenesulfonic acid; D000165:Acridine Orange