TY - GEN AU - López López, José Antonio AU - Moreno Aguilar, Carlos AU - Mendiguchía Martínez, Carolina AU - Pinto Ganfornina, Juan José AU - Mánuel Delgado, María Victoria A4 - Química Analítica PY - 2014 UR - http://hdl.handle.net/10498/16013 AB - Metals appear at very low concentration level in natural waters. As a consequence, a sample treatment step before instrumental determination is often required; in which the metal has to be pre-concentrated and isolated from sample matrix components... LA - eng KW - Hollow fiber KW - Liquid phase micro-extraction KW - Metals KW - Speciation TI - Hollow fiber liquid phase micro-extraction for heavy metals speciation ER -