Fig. 2From: A simple co-precipitation sorbent-based preconcentration method for the analysis of fungicides in water and juice samples by high-performance liquid chromatography coupled with photodiode array detectionEffect of NaOH volume on the extraction recovery of target fungicides (100 µg/L each). Conditions: 300 mmol/L MgCl2 (90 μL), 0.5 mol/L NaOH, and 10 mmol/L SDBS (350 μL)Back to article page