Simple and Economical Analytical Voltammetry in 15 ?L Volumes: Paracetamol Voltammetry in Blood Serum as a Working Example
By Sripirom, Jiyapa; Sim, Wei Chung; Khunkaewla, Panida; Suginta, Wipa; Schulte, Albert
Published in Analytical Chemistry
2018
Abstract
Reported is a three-electrode mini-cell for voltammetry in 15 ?L solutions. The key device component is a rolled platinum foil of an inverted omega-shaped cross section, which functions as both the electrolyte container and the counter-electrode. The analytical assembly was completed with properly sized working and reference electrodes in the two terminals of the quasi-tubular Pt trough. Its applicability in electrochemical assays of 15 ?L solutions was verified by redox mediator voltammetry at graphite and noble metal sensors and by trace lead stripping voltammetry. Real sample analysis was adequate for drug detection in a volunteer