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The influence of clay preparation procedure on sorption and hydrolysis of carbaryl (1-naphthyl, A-methyl carbamate) by the reference smectite SWy-2 was examined. For research purposes, reference clays are sometimes used without purification, or more commonly, the <2 pm size fraction is obtained by gravity sedimentation or low-speed centrifugation. We determined that these common methods did not...
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