Abstract:In order to achieve green separation and rapid detection of metal elements in seawater,a method for the determination of six heavy metals in seawater by solid phase extraction inductively coupled plasma mass spectrometry (ICP-MS) with a new chelating resin as filler was established. Cu, Pb, Co, Ni, Cr, Mo metal ions in seawater form chelates with iminodiacetic acid chelating resin. After solid-phase extraction and elution, metal ions can be quantitatively separated and enriched from seawater. Under the optimum experimental conditions, the relative standard deviation (RSD) of the method was 1.7% ~ 3.6%, the recovery was 82.6% ~ 102%, and the detection limit was 0.03 μg /L~1.5 μg/L. In this study, a green sample pretreatment method for seawater analysis was realized by solid phase extraction with iminodiacetic acid chelating resin as filler. This method was combined with ICP-MS to analyze seawater standard samples and actual samples, and satisfactory results were obtained.