An Algorithm for the Estimation of NAPL Saturation and Composition from Typical Soil Chemical Analyses

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Abstract
An algorithm is presented that allows estimation of the saturation and composition of a single of multi‐component NAPL within a core sample. These estimates are possible because, in addition to distributing the organic chemicals between aqueous, sorbed, air, and NAPL phases according to traditionalpartitioning equations, the algorithm incorporates equations for the conservation of mass and volume. A unique solution is obtained by solvihg the set of nonlinear equations implicitly. The algorithm is built into a code called NAPLANAL, which is tested and applied to actual core samples collected in the field.