title: Retraction notice to "The facile flow-injection spectrophotometric detection of gold(III) in water and pharmaceutical samples using 3,5-dimethoxy-4-hydroxy-2-aminoacetophenone isonicotinoyl hydrazone (3,5-DMHAAINH)" [J. Hazard. Mater. 120 (1-3) (2005) 213-218].