A team of USGS scientists detected a plume of the soil fumigant 1,2-dichloro-propane (DCP) in the...

A team of USGS scientists detected a plume of the soil fumigant 1,2-dichloro-propane (DCP) in the groundwater flowing away from a field. The aquifer solids have an fOC (organic carbon content) of 0.6%, a solid density of 2.66, and a porosity of 0.3. If DCP partitions fast between OC and water, and if partitioning into OC is the main process that slows down DCP transport estimate the retardation factor Rf. log KOC [L/kg] = 2.28 for DCP.

Expert Solution

The equation for the retardation factor is,

the porosity is given,

the density of the solid is,

We need to determined the soil- water distribution coefficient, .

Sorption to solid- phase organic matter is described as:

the value of was given in the problem, = 0.6 % = 0.006

the value of can be calculed using the

with this ,

and with this ,

queen_honey_blossom answered 1 day ago

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