Philippe Buhlmann, Li Chen, Eric Olson (University of Minnesota, USA)
Reducing the volume of chemical waste is a fundamental principle of green chemistry. However, many experiments in the undergraduate analytical teaching laboratory ask for relatively large sample volumes to achieve reasonable accuracy and precision. We developed a simple electrochemical cell that requires only 200 uL of sample volume to produce highly reproducible cyclic voltammograms. The cell can be easily disassembled for cleaning and polishing of the working electrode. Using another electrochemical technique, we also address environmental analysis by fabricating ion-selective electrodes for the environmental pollutant class of perfluoralkyl carboxylates and sulfonates, permitting analysis at the nanomolar detection limit.