Auxiliary electrode oxidation for naked-eye electrochemical determinations in microfluidics: towards on-the-spot applications - Martucci, Diego H.; Todão, Fagner R.; Shimizu, Flávio M.; Fukudome, Tiago M.; Schwarz, Stephane F.; Carrilho, Emanuel; Gobbi, Angelo L.; Oliveira Junior, Osvaldo Novais de; Lima, Renato S. (Electrochimica Acta, 2018)