Application of Three-phase Hollow Fiber LPME using an Ionic Liquid as Supported Phase for Preconcentration of Malachite Green from Water Samples with HPLC Detection

] mixed with 1% trioctylphosphine oxide(TOPO) as supported phase. Several parameters (accepter phase pH, sample pH, supported phase membrane,volume of accepter phase, salinity, extraction time) that could affect extraction perf ormance were investigated.Under the optimal extraction conditions, the established approach showed ex cellent characters as: high enrich-ment factor (212), wide linear range (0.20-100 µg L

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