Molecular dynamics simulations of O-2 solvated at the vicinity of water/1,2-dichloroethane (DCE) and water/CCl4 liquid-liquid interfaces are reported. The distribution of oxygen along the interface normal is investigated. The results show that the choice of the algorithm used to keep the temperature of the system constant has a non-negligible effect on this distribution, the Nose-Hoover thermostat being superior over the Berendsen thermostat in this respect. No adsorption of O-2 at the interface has been observed, even if its molecular scale roughness is taken into account by means of the novel method for identification of truly interfacial molecules (ITIM). (C) 2008 Elsevier B.V. All rights reserved.