Catalytic adsorptive stripping chronopotentiometry of Co(II)-DMG-Bromate system at an in situ plated lead film electrode

A novel catalytic adsorptive stripping chronopotentiometric (CC-CAdSCP) procedure for the determination of Co(II) traces was developed using a lead film electrode (PbFE). The PbFE was generated in situ on a glassy carbon support from a 0.1M ammonia buffer containing 1×10-5M Pb(II), 6.5×10-5M DMG and the target metals. An addition of 0.2M NaBrO3 to the solution yielded an 11-fold catalytic enhancement of chronopotentiometric response of the Co(II)-DMG complex. The CC-CAdSCP curves were well-developed, sharp and reproducible (RSD 5.0% for 5×10-9M Co(II)). The limit of detection for Co(II) for 210s of accumulation time was 4×10-10M (0.024μgL-1). In addition, the elaborated method allowed the simultaneous quantification of Co(II) and Ni(II) simultaneously. © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim

Design and Fabrication of a Quadrupole Resonator for Sample R amp;D

Being able to obtain BCS surface resistance and material properties from the same surface is necessary to gain a fundamental understanding of the evolution of SRF surfaces. A test resonator which will allow to obtain BCS properties from samples is currently under development at Universität Hamburg UHH and DESY and is based on the Quadrupole Resonators developed and operated at CERN [1] and HZB [2]. The current status of the necessary infrastructure, the procurement process and design considerations are shown. In addition, an outline of the planned R amp;D project with the Quadrupole Resonator will be presented and first RF measurements and surface analysis results of samples will be show