Estimating the retardation coefficient of trichlorethene for a sand aquifer low in sediment organic carbon-a comparison of methods

摘要

Significant groundwater contamination by trichloroethene(TCE)has been identified in the Spearwood Sands aquifer, Perth Western Australia. The organic carbon content of the aquifer Sediment is very low and reported retardation coefficients for TCE in low organic carbon Subsurface environments are rate. Carbon-based-correlation equations were reported to underesti- Mate the retardation of nonionic hydrophobic organic compounds in aquifers characterised by low Organic carbon contents. Estimating the retardation coefficient for TCE in the Spearwood Sands Aquifer, therefore, is difficult.