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Effects of Environmental Factors on 1,3-Dichloropropene Hydrolysis in Water and Soil

^a Dep. of Environmental Sciences, Univ. of California, Riverside, CA 92521
^b USDA-ARS, U.S. Salinity Lab., 450 W. Big Springs Road, Riverside, CA 92507

View larger version (16K): [in a new window]   Fig. 1. Hydrolysis of 1,3-D (separate isomers) in deionized water. Symbols represent the mean of triplicate samples and error bars indicate the standard deviation. Dotted and solid lines are first-order fitted curves for trans- and cis-isomers, respectively.

View larger version (24K): [in a new window]   Fig. 2. The effect of pH on 1,3-D hydrolysis. Data presented are trans-isomers. Symbols represent the mean of triplicate samples and error bars indicate the standard deviation. Lines are first-order fitted curves.

View larger version (17K): [in a new window]   Fig. 3. Chloride release from hydrolysis of 1,3-D (10 g kg–1) in soils with different moisture contents. Symbols represent the mean of triplicate samples and error bars indicate the standard deviation. Dotted, dashed, and solid lines are fitted curves for 5, 10, and 15% moisture content, respectively.

View larger version (15K): [in a new window]   Fig. 4. Chloride release from hydrolysis of 1,3-D (10 g kg–1) in different mineralogical matrixes. Symbols represent the mean of triplicate samples and error bars indicate the standard deviation.

View larger version (18K): [in a new window]   Fig. 5. Chloride release from hydrolysis of 1,3-D (10 g kg–1) in unamended and organic matter amended soils. Symbols represent the mean of triplicate samples and error bars indicate the standard deviation. Dotted and solid lines are fitted curves for unamended and 5% Florida muck amended Arlington soils, respectively.

View larger version (34K): [in a new window]   Fig. 6. Remaining 1,3-D (10 g kg–1 spiking rate) and generated chloroallyl alcohol in unamended and OM amended soils. Symbols represent the mean of triplicate samples and error bars indicate the standard deviation.

View larger version (15K): [in a new window]   Fig. 7. Microbiological hydrolysis of 1,3-D (1.0 g kg–1) in soil. Symbols represent the mean of triplicate samples and error bars indicate the standard deviation.

View larger version (14K): [in a new window]   Fig. 8. Isomeric effects on hydrolysis of 1,3-D (1.0 g kg–1) in soil. Symbols represent the mean of triplicate samples and error bars indicate the standard deviation.