Hydroxyl‐rich ferrofluid for efficient liquid phase microextraction of cinnamic acid derivatives in traditional Chinese medicine
Runqin Wang,
Xueling Zhang,
Xiangyu Meng
et al.
Abstract:In this study, a hydroxyl‐rich ferrofluid was prepared by dispersing silica‐coated magnetic nanoparticles into a methyltrioctylammonium chloride‐glycerol deep eutectic solvent and then employed in the preconcentration of trace‐level of cinnamic acid derivatives (caffeic acid, p‐hydroxycinnamic acid, ferulic acid, and cinnamic acid) in traditional Chinese medicine prior to high‐performance liquid chromatography analysis. The structures of the synthesized materials were characterized by X‐ray diffraction and inf… Show more
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