RETRACTED: Solubilization of DNAPLs by mixed surfactant: Synergism and solubilization capacity

This article has been retracted at the request of the Editor-in-Chief. Please see Elsevier Policy on Article Withdrawal (http://www.elsevier.com/locate/withdrawalpolicy).Reason: Dr Zhao Baowei, who is the corresponding author, has published two articles: Colloids Surf. A: Physicochem. Eng. Aspects, 296 (2007) 167–173 and J. Hazard. Mater., B136 (2006) 513–519 without informing one of the co-authors. Moreover, these two articles show close resemblance with a paper published in Chemosphere: “Solubilization of DNAPLs by mixed surfactant: Reduction in partitioning losses of nonionic surfactant” Chemosphere, 62 (2006) 772–779. Parts of the text, tables and figures have been duplicated.