Fibroin/dodecanol floating solidification microextraction for the preconcentration of trace levels of flavonoids in complex matrix samples11Abbreviations: F/D-FSME, fibroin/dodecanol floating solidification microextraction; HPLC, high performance liquid chromatography; UV, ultraviolet detection; EF, enrichment factor; TCM, traditional Chinese medicine; LPE, liquid phase extraction; SPE, solid phase extraction; LPME, liquid phase microextraction; SPME, solid phase microextraction; SFODLPME, solidification of floating organic droplet liquid phase microextraction; D-FSME, dodecanol floating solidification microextraction.