Electrochemical Sensor with Record Performance Characteristics

Nanoelectrode sensor arrays were formed by depositing nanostructures of the electrocatalyst Prussian Blue onto an inert carbon support. The sensor thus obtained showed a high sensitivity toward hydrogen peroxide, with a detection limit of 1×10−9 mol L−1 (i.e., 0.03 ppb), and a broad linear calibration range, which extended over seven orders of magnitude (from 10−9 to 10−2 m L−1 H2O2, see graphic). Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2007/z700341_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.