Antimony is a cumulative toxic element with unknown biological function [1]. The toxicity of antimony (III) ion is 10 times higher than that of antimony (V) ion [2]whereas inorganic forms are more toxic than the organic ones[3].Many different methods for determination of antimony has been developed which include; spectrophotometry[4] , atomic absorption spectrometry[5], atomic fluorescence spectrometry [6], anodic stripping voltammetry, inductively coupled plasma atomic emission and mass spectrometry[7], neutron activation analysis[8], fluorometry[9], total reflection X-ray fluorescence (TRXF) [10], microwave plasma atomic emission spectrometry (MP-AES), as an alternative toICP-AES[11],Hydride generation [12] combined with its detection by atomic absorption and fluorescence spectrometry (HG-AFS) [13] or by graphite furnace atomic absorption spectrometry (HG-GFAAS)and flow-injection analysis [17].Spectrophotometry methods are by far the most popular and attractive because of their simplicity, low-cost and compactness. A simple ion pair-dispersive liquid–liquid microextraction method was proposed for preconcentration of trace amounts of antimony prior to its determination by uv-visb spectrophotometery. An ion- pair complex of SbCl6 -with methyl violet was extracted into cholorobenzene. Sb+3 should be oxidized to Sb+5to form the ion-association complex. The volume and type of extraction and dispersive solvents, the extraction time, concentration of complexing agent, the volume of the hydrochloric acid and salt concentration were optimized. The effects of different ions on the antimony determination was also studied. The linear range of the calibration graph was5- 250 ng mL-1of antimony. The limit of detection was 5.05 ngmL-1 and the enrichment factor was 270. The proposed method was successfully applied to determine antimony in real samples.

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