Direct detection of lead in RTIL using DPASV on BDD film microcells and determination of concentration factor after extraction from aqueous samples

► Boron Doped Diamond microcells were obtained using femtosecond laser micromachining. ► Pb was detected using DPASV on a BDD microcell in the RTIL extracting phase. ► The calibration curves with and without TOPO are linear (DL = 0.3 μg/L). ► The concentration factor was 5.0 ± 0.2 for lead in RTIL without chelating agent TOPO. ► The concentration factor was 9.0 ± 0.10 in IL with chelating agent TOPO.