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A SIMPLE METHOD FOR PARTIAL PURIFICATION OF REFERENCE CLAYS L. J ACQUELINE A RROYO , H UI L I , B RIAN J. T EPPEN AND S TEPHEN A. B OYD *
Department of Crop and Soil Sciences, and Environmental Science and Policy Program, Michigan State University, East Lansing, Michigan 48824, USA AbstractÐThe influence of clay preparation procedure on sorption and hydrolysis of carbaryl (1-naphthyl,
-methyl carbamate) by the reference smectite SWy-2 was examined. For research purposes, reference clays are sometimes used without purification, or more commonly, the 99% purity) was obtained from Method A, carbonates were removed prior to separating ChemService (West Chesnut, Pennsylvania, USA) and the 99% purity) was obtained from Sigma- removed after separating the
