An in situ benzoylation-dispersive liquid-liquid microextraction method based on solidification of floating organic droplets for determination of biogenic amines by liquid chromatography-ultraviolet analysis

► In situ benzoylation was combined with DLLME-SFO for LC-UV analysis of 9 BAs. ► A simple, green method using a basic LC-UV system was developed. ► The LOD was comparable to or lower than methods using FL or MS detection. ► The versatile method was applied to BA analysis in 4 types of alcoholic beverages.