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A Simple High Performance Liquid Chromatography Method for Analyzing Paraquat in Soil Solution Samples

^a Department of Water Resources, St. Johns River Water Management District, P.O. Box 1429, Palatka, FL 32178-1429
^b Soil and Water Science Department, University of Florida, Gainesville, FL 32611-0290

View larger version (9K): [in a new window]   Fig. 1. Chromatogram of paraquat concentration of 10 mg L–1 measured by the 12C-high performance liquid chromatography (HPLC) method. The peak height is at 4.35 min.

View larger version (21K): [in a new window]   Fig. 2. Comparison of paraquat concentration in soil solution measured by the 14C-liquid scintillation counting (LSC) method and the 12C-high performance liquid chromatography (HPLC) method.