Effects of sodium dodecylbenzenesulfonate on uptake of pyrene by fish gills

Abstract

Laboratory experiments were carried out to study the effects of anionic surfactant sodium dodecylbenzenesulfonate (SDBS) on the uptake of pyrene by fish gills. The uptake (including adsorption) of pyrene by gills of the color carp (C. carpio var. color) exposed to 20–100 μg/L pyrene in the presence or absence of 0.2–6.0 mg/L SDBS were determined. The sorption of pyrene by mucus was preliminary studied using a four-step sequential extraction procedure. Fish gills were extracted with H₂O, 0.01 M CaCl₂, CH₃OH and a mixture of 1:1 n-C₆H₁₄/CH₂Cl₂ in sequence. Results showed that SDBS significantly affected these accumulation or adsorption on the fish gills (not in gills). SDBS could affect the bioavailability of pyrene in aquatic systems.

Keywords:

• Uptake
• pyrene
• fish gills
• sodium dodecylbenzenesulfonate

Acknowledgments

This work was supported by the National Basic Research Program (2003CB415004), National Scientific Foundation of PR China (Grant 40031010, 40021101), and Postdoctal Science Foundation of PR China (2005037287).

This paper was presented at the SETAC Asia/Pacific 2006 conference held at Peking University, China on September 18–20, 2006.