Fig. 1From: Performance comparison between solid phase extraction and magnetic carbon nanotubes facilitated dispersive-micro solid phase extractions (Mag-CNTs/d-µSPE) of a cyanide metabolite in biological samples using GC–MSProposed extraction mechanism for ATCA in a Mag-CNTs-COOH/d-µSPE and b Mag-CNTs-SO3H/d-µSPEBack to article page