IMIS | Flanders Marine Institute
 

Flanders Marine Institute

Platform for marine research

IMIS

Publications | Institutes | Persons | Datasets | Projects | Maps
[ report an error in this record ]basket (0): add | show Printer-friendly version

Sorption-desorption kinetics and toxic cell concentration in marine phytoplankton microalgae exposed to Linear Alkylbenzene Sulfonate
Renaud, F.; Oberhansli, F.; Teyssie, J.L.; Miramand, P.; Temara, A.; Warnau, M. (2011). Sorption-desorption kinetics and toxic cell concentration in marine phytoplankton microalgae exposed to Linear Alkylbenzene Sulfonate. Mar. Pollut. Bull. 62(5): 942-947. dx.doi.org/10.1016/j.marpolbul.2011.02.051
In: Marine Pollution Bulletin. Macmillan: London. ISSN 0025-326X, more
Peer reviewed article  

Available in Authors 
    VLIZ: Open Repository 280005 [ OMA ]

Keyword
    Marine
Author keywords
    Marine microalgae; Surfactant; Toxicokinetics; Sorption coefficient

Authors  Top 
  • Renaud, F.
  • Oberhansli, F.
  • Teyssie, J.L.
  • Miramand, P.
  • Temara, A.
  • Warnau, M.

Abstract
    Linear Alkylbenzene Sulfonates (LAS) are ubiquitous surfactants. Traces can be found in coastal environments. Sorption and toxicity of C12-LAS congeners were studied in controlled conditions (2-3500 µg C12LAs/L) in five marine phytoplanktonic species, using standardized methods. IC50 values ranged from 0.5 to 2 mg LAS/L. Sorption of 14C12-6 LAS isomer was measured at environmentally relevant trace levels (4 µg/L) using liquid scintillation counting. Steady-state sorption on algae was reached within 5 h in the order dinoflagellate > diatoms > green algae. The sorption data, fitted a L-type Freundlich isotherm, indicating saturation. Desorption was rapid but a low LAS fraction was still sorbed after 24 h. Toxic cell concentration was 0.38 +/- 0.09 mg/g for the studied species. LAS toxicity results from sorption on biological membranes leading to non-specific disturbance of algal growth. Results indicate that LAS concentrations in coastal environments do not represent a risk for these organisms.

All data in IMIS is subject to the VLIZ privacy policy Top | Authors