Fig. 3. Phosphorus yields (µg P; error bars indicate SD; n = 6) and recovery percentage of added P (relative to P yield without competing anions) in AER extraction when the amount of competing anions (Cl^-, NO^-₃, or SO^2-₄) in the studied sample (40 mL) increases. All solutions contained 12 µg added P (0.3 mg P L^-1 in a 40-mL sample).

Return to article