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In this paper, two methods based on organic solvent dispersive liquid–liquid microextraction (OS‐DLLME) and ionic liquid dispersive liquid–liquid microextraction (IL‐DLLME) coupled with high‐performance liquid chromatography have been critically compared for analyzing emodin and its metabolites (aloe‐emodin, anthraquinone‐2‐carboxylic acid, rhein, danthron, chrysophanol and physcion) in urine samples...
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