... solutionwas rapid in the initial stages of contact and reached a maximum in the range of 35–60 min for soil mineralssuch as hematite and feldspar. Carbonell Barrachinaet al. (1996) observed that ... forthe Examination of Water and Wastewater. AmericanPublic Health Association, NW, Washington, DC.Carbonell Barrachina, A. A., Burlo Carbonell, F.M., MataixBeneyto, J.J., 1996. Kinetics of arsenite ... were also obtained.2. Materials and methods2.1. Soil sample and characterizationAn uncontaminated reddish brown tropical soilsample was obtained from a site in the western part ofSingapore...