CAPACITY OF SOILS FOR SORPTION OF HYDROGEN-SULFIDE

Studies with 42 soils selected to obtain a wide range in properties showed that air-dry and moist soils have substantial capacities for sorption of H2S from air (averages, 9.8 and 12.5 g S kg-1 soil, respectively). Soil properties influencing the capacities of air-dry soils for sorption of H2S included sand and clay contents, DCB-soluble Mn, exchangeable Na, DCB-soluble Fe, and total DCB-soluble metals. The corresponding capacities of moist soils were influenced by sand and clay contents, DCB-soluble Mn, and surface area. It was possible to closely predict the H2S sorption capacities of both air-dry and moist soils (R2= 0.804 and 0.918, respectively) from consideration of their properties. © 1990, Taylor & Francis Group, LLC. All rights reserved.