Pressure-driven mesofluidic platform integrating automated on-chip renewable micro-solid-phase extraction for ultrasensitive determination of waterborne inorganic mercury

► Mesofluidic pressure-driven platform for automatic on-chip μSPE. ► Bead injection in a Lab-on-a-Valve platform for determination of waterborne Hg(II). ► Selective retention of Hg(II) in hydrochloric acid onto bare Oasis HLB® copolymer. ► Determination of Hg(II) at levels below maximum allowed concentrations in waters.