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Reverse flow injection analysis of trace amounts of anionic surfactants in seawater without liquid-liquid extraction

Author

Listed:
  • Lingyun YU

    (Technology Center of Sichuan Entry-Exit Inspection and Quarantine Bureau, Chengdu, Sichuan, China
    Light Industry & Textile & Food Engineering, Sichuan University, Chengdu, Sichuan, China)

  • Mengru WU

    (Technology Center of Sichuan Entry-Exit Inspection and Quarantine Bureau, Chengdu, Sichuan, China)

  • Wei DONG

    (Technology Center of Sichuan Entry-Exit Inspection and Quarantine Bureau, Chengdu, Sichuan, China)

  • Jing JIN

    (Technology Center of Sichuan Entry-Exit Inspection and Quarantine Bureau, Chengdu, Sichuan, China)

  • Xinshen ZHANG

    (Light Industry & Textile & Food Engineering, Sichuan University, Chengdu, Sichuan, China
    State Key Laboratory of Hydraulics and the Exploitation and Protection of Mountain Rivers, Sichuan University, Chengdu, Sichuan, China)

Abstract

In order to control the pollution by anionic surfactants in seawater, a simple, accurate and sensitive reverse flow injection (rFIA) spectrophotometric method for the determination of anionic surfactants in seawater is suggested in this paper. Sodium dodecylbenzenesulfonate (LAS) was selected as the reference anionic surfactant. The method is based on the ion associate formed between LAS and Ethyl Violet. The absorbance of the complex is measured by optical detector at 585 nm. Chemical factors and rFIA variables affecting the system are also discussed. Under the optimal conditions, the linear range of this method was 25.0-400.0 μg/l; the detection limit was 2.4 μg/l; the relative standard deviation was 0.38%. This method is suitable for automatic and continuous analysis, and was successfully applied to determine the content of anionic surfactants in seawater.

Suggested Citation

  • Lingyun YU & Mengru WU & Wei DONG & Jing JIN & Xinshen ZHANG, 2011. "Reverse flow injection analysis of trace amounts of anionic surfactants in seawater without liquid-liquid extraction," Soil and Water Research, Czech Academy of Agricultural Sciences, vol. 6(4), pages 198-204.
    • Handle: RePEc:caa:jnlswr:v:6:y:2011:i:4:id:13-2011-swr
    DOI: 10.17221/13/2011-SWR
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