Inorganic elemental compositions of commercial multivitamin/mineral dietary supplements: Application of collision/reaction cell inductively coupled-mass spectroscopy

► Microwave assisted CRC ICP-MS used for analysis of multi-element determination. ► The validity of the applied method was assessed by the analysis of standard reference materials. ► Thirty five popular multivitamin/mineral dietary supplements were analysed and their composition levels varied. ► Daily intake of As, Cd, Pb and Hg concentrations were lower than those of the regulatory limits in all 35 products. ► The percentage deviation from the label claim is element specific.