SECM

Electrochemical robotic for determination of Ni-Ions

Electrochemical robotic for determination of Ni-Ions

Based on a set of three positioning stages and a microtiter plate, the electrochemical robotic system is both easy to use and very flexible.It can be used not only for a combinatorial evaluation of sensors but also for detection of several Ions in aqueous solutions. The detection is carried out in a 24-well Teflon® based microtiterplate, using the adsorptive stripping voltammetry for detection of Ni2+ concentrations down to 0.1 µg/L. In comparison to manually performing stripping analysis, the electrochemical robotic system offers reliability, improved reproducibility and in addition it is more practicable, especially when studying larger libraries of sample solutions. In combination with its modular Software the system can be combined with an automatic sampler and therefore be a stand-alone system for analysing the Nickel content of a library of samples. At the moment the electrochemical robotic system is used for the evaluation of Ni2+-Ions in supernatants of corrosion studies which haven been induced chemically or biologically to evalute the biocompatibility of NiTi based shape-memory alloys.