“…Therefore, SIA systems have the capacity to perform several complex online reactions coupled with different detectors without reconfiguration of the flow manifold (often necessary with FIA systems). [70] This setup was explored for the simultaneous determination of Cu 2 + , Pb 2 + , Cd 2 + , and Zn 2 + in waters and sediments, [71] while a goldmodified SPE was used for Hg 2 + determination in sea water and table salt [72] and in certified estuarine sediment sample, [73] As(III) in river water, [74] and Cd 2 + , Pb 2 + , Cu 2 + and Hg 2 + using a antimony-graphene oxide modified SPCE. [75] In all the reports, the main objective concerned the automation of the analysis procedure when using SIA systems coupled with SPEs.…”