Recent Trends in Macro-, Micro-, and Nanomaterial-Based Tools and Strategies for Heavy-Metal Detection

26 páginas, 17 figuras, 3 tablas.The financial support of the Spanish Ministry of Science and Innovation through projects MAT-2008-128 03079NAN are acknowledged. G.A. thanks the Generalitat de Catalunya for the predoctoral fellowship (FI 2009).Peer reviewe