Figure 2
From: Chromium (III) removal by perennial emerging macrophytes in floating treatment wetlands
Nutrient concentrations (in mg/L) of (a) nitrogen (TN) and (b) orthophosphate (PO4-P) during 50 days of trial in control, Cr500, Cr1000, and Cr2000 treatments with Phragmites australis (Pa) and Iris pseudacorus (Ip) embedded in floating treatment wetlands.
