RT Journal Article
T1 Magnetic dispersive solid phase extraction for simultaneous enrichment of cadmium and lead in environmental water samples
A1 Montoro-Leal, Pablo
A1 García-Mesa, Juan Carlos
A1 Siles-Cordero, María Teresa
A1 López-Guerrero, María del Mar
A1 Vereda-Alonso, Elisa Isabel
K1 Agua - Composición
AB A new magnetic dispersive solid phase extraction (MDSPE) method and graphite furnace atomic absorptionspectrometry (GFAAS) have been combined for the simultaneous enrichment of Cd and Pb fromenvironmental water samples including seawater, and subsequent sequential determination of both analytes.For the preconcentration, a shell structured Fe3O4@graphene oxide nanospheres was synthetized andcharacterized. This nanosorbent presents a large contact area and has a high surface density of polar groups.With the optimized method, the experimental detection and determination limits, calculated as theconcentration of analyte giving signals equivalent to three and ten times, respectively, the standarddeviation of the blank plus the net blank intensity, were 0.005 µg L-1 (detection limit) and 0.017 µg L-1(determination limit) for Cd; and 0.008 µg L-1 (detection limit) and 0.026 µg L-1 (determination limit) forPb. The method offers good precisions (RSD < 3.5%) and a preconcentration factor of 200. The accuracyof the proposed method was verified using certified reference materials (SLRS-5, SPS-SW2) and bydetermining the analytes content in spiked seawater and tap water samples collected from Málaga (Spain).The determined values by external calibration were in good agreement with the certified values and therecoveries for the spiked samples were around 100% in all cases.
PB Elsevier
YR 2020
FD 2020-03-05
LK https://hdl.handle.net/10630/36489
UL https://hdl.handle.net/10630/36489
LA eng
NO P. Montoro-Leal, J.C. García-Mesa, M.T. Siles Cordero, M.M. López Guerrero, E. Vereda Alonso, Magnetic dispersive solid phase extraction for simultaneous enrichment of cadmium and lead in environmental water samples, Microchemical Journal, Volume 155, 2020, 104796, ISSN 0026-265X, https://doi.org/10.1016/j.microc.2020.104796. (https://www.sciencedirect.com/science/article/pii/S0026265X20300539)
NO University of Málaga (proyecto Puente UMA)Junta de Andalucía Proyecto UMA18FEDERJA060Spanish Ministerio de Ciencia y Tecnología, fellowship FPU18/05371
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026