Method for removing trialkyl arsine from liquid

PURPOSE: To provide a method for effectively removing trialkyl arsine(s) from a fluid containing no or a slight amount of H 2 S. CONSTITUTION: Trialkyl arsine(s) are removed from a fluid (e.g. a hydrocarbon- containing gas) by bringing the fluid into contact with a surbent material comprising (a) copper sulfide, preferably copper (I) sulfide, and (b) an inorganic support material, preferably zinc oxide and/or alumina. COPYRIGHT: (C)1992,JPO