SORPTION OF NITROGEN-HETEROCYCLIC COMPOUNDS BY SOILS AND SEDIMENTS

Abstract

We examined the sorption of three nitrogen-heterocyclic compounds (acridine, bi-quinoline, and dibenzocarbazole) on 14 soils and sediments with a wide range of properties. The compounds produced linear sorption isotherms (Kp = Cs/Cw). When sorption was expressed on a constant organic carbon basis (Koc = Kp ÷ organic carbon), the Koc values obtained were in good agreement with Koc values predicted from Koc-S and Koc-Kow relationships established for other classes of compounds. This study expands these relationships to include N-heterocyclics, particularly the lower, water-soluble members of this family. We examined the sorption of three nitrogen-heterocyclic compounds (acridine, bi-quinoline, and dibenzocarbazole) on 14 soils and sediments with a wide range of properties. The compounds produced linear sorption isotherms (Kp = Cs/Cw). When sorption was expressed on a constant organic carbon basis (Koc = Kp ÷ organic carbon), the Koc values obtained were in good agreement with Koc values predicted from Koc-S and Koc-Kow relationships established for other classes of compounds. This study expands these relationships to include N-heterocyclics, particularly the lower, water-soluble members of this family. © Williams & Wilkins 1982. All Rights Reserved.