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Arsenic Availability from Chromated Copper Arsenate (CCA)–Treated Wood

Department of Soil, Water, and Climate, University of Minnesota, 1991 Upper Buford Circle, 439 Borlaug Hall, St. Paul, MN 55108

View larger version (22K): [in a new window]   Fig. 1. Arsenic distribution in garden beds in loamy sand soils. Error bars represent ±1 standard deviation. Arsenic concentrations in reference soil from Sites 1, 2, and 3 were 3.7, 3.1, and 4.8 mg kg–1, respectively.

View larger version (22K): [in a new window]   Fig. 2. Arsenic distribution in garden beds in sandy loam soils. Error bars represent ±1 standard deviation. Arsenic concentrations in reference soil from Sites 4, 5, and 6 were 4.6, 6.2, and 5.2 mg kg–1, respectively.

View larger version (22K): [in a new window]   Fig. 3. Relationship between the log colony forming units (CFU) g–1 soil and concentration of chromated copper arsenate (CCA) in agar media. Error bars represent ±1 standard deviation. Mean separation within soils and Type C chromated copper arsenate (CCA-C) concentration by least square means test (p < 0.05).