Nitrate Sorption in an Agricultural Soil Profile

Figure 1

Effect of contact time on NO₃⁻ sorption for 4 soil depths from a batch experiment using an iso-humic soil from Chott Meriam, Tunisia. (Initial conditions for the batch experiment were 100 mg NO₃⁻ L⁻¹, 22°C, and 5 g air-dried soil).