A rapid microwave assisted digestion and derivatization method for the determination of fatty acids in shark cartilage by GC MS was developed The optimum conditions for digestion and derivatization were studied in detail using orthogonal design The digestion and derivatization were accomplished in 4 minutes at 600 W microwave power using HCl methanol (1∶4, V/V) as digestion and derivatization solvent, and the extraction of the target analytes could be carried out simultaneously This method is rapi...