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Preconcentration Techniques

Ultra-Trace Determination of Sudan I, II, III, and IV in Wastewater by Solid-Phase Microextraction (SPME) and on-Line Solid-Phase Extraction (SPE) with High-Performance Liquid Chromatography (HPLC)

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Pages 2559-2570 | Received 24 Jan 2020, Accepted 23 Mar 2020, Published online: 01 Apr 2020

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