Trace element determination in seawater by ICP-MS using online, offline and bath procedures of preconcentration and matrix elimination

► We report three procedures for the determination of trace elements in seawater by ICP-MS. ► The separation of the saline matrix and analyte preconcentration were performed using iminodiacetate resins. ► The recovery of the elements as a function of pH was studied. ► The application in real samples is reported too.