Model soil screening studies

Figure 1. Screening study of removal of C20 from IRE surface by CnEOfi surfactants at ambient temperature. In this and other removal plots below, normalized intensity is that of the CH2 symmetric stretching band of the hydrocarbon model soil.

However, the limited test of the screening model mobility prediction is more encouraging. Given that a certain amount of variability will occur under field conditions, the laboratory R values did present a picture of the relative order of leaching of the four chemicals in the two plot experiments. If this result is obtained when the field experiment is repeated on large numbers of chemicals in different soils, it may eventuality allow future comprehensive field research studies to focus on representatives of different mobility categories rather than requiring prohibitive numbers of experiments to be conducted on each chemcial. 

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