Preconcentration of molybdenum, antimony and vanadium in gasolsine samples using Dowex 1-x8 resin and their determination with inductively coupled plasma-optical emission spectrometry

► Dowex 1-x8 SPE method for preconcentration of trace metals in gasoline is reported. ► The method had relatively high enrichment factor with low LOD and LOQ values. ► The column can be reused up to 150 cycles without significant loss of sorption performance. ► The method was applied for analysis of real gasoline samples.