Green rusts, GRs, can act as both sorbents and reductants towards selected pollutants. Organo-GRs are expected to combine these properties with a high affinity for hydrophobic substances. A novel organo-GR, GRLAS, was synthesized by incorporating a mixture of linear alkylbenzenesulphonates (LAS) into the interlayer space of synthetic sulphate green rust, GR . Mössbauer analysis of GRLAS indicates that the structure of the organo-GR is very similar to SO4 that of the initial GR with regard to the FeII/FeIII ratio and local coordination of Fe atoms. X-ray SO4 diffraction demonstrates that the GRLAS formed was well ordered, although a mixture of surfactant was used for intercalation. The basal spacings of the GRLAS and the kinetics of the ion-exchange process were dependent on the initial surfactant loading; basal spacings of ~2.85 nm were obtained at The ratio LAS solution concentrations >10 mlass="sc">m. LASadsorbed/SO42− desorbed significantly exceeded the stoichiometric ratio of 2 during the initial part of the ion-exchange process (