RT Journal Article
T1 Simultaneous determination of noble metals, Sb and Hg by magnetic solid phase extraction on line ICP OES based on a new functionalized magnetic graphene oxide
A1 García-Mesa, Juan Carlos
A1 Montoro-Leal, Pablo
A1 López-Guerrero, María del Mar
A1 Vereda-Alonso, Elisa Isabel
K1 Metales preciosos
AB The aim of this study is to evaluate the extraction capacity of a new functionalized magnetic graphene oxide(MGO) to be employed in the automatic simultaneous preconcentration-determination of a relatively largenumber of elements with different properties by inductively coupled plasma optical emission spectrometry (ICPOES). A multimode sample introduction system (MSIS) cyclonic spray chamber was employed to generate andintroduce vapours of Ag, Au, Ir, Os, Pd, Pt, Sb and Hg in the ICP torch. Several flow and chemical variables wereoptimized by two multivariate central composite designs. Detection limits between 0.05 μg L−1 for Hg, and2.6 μg L−1 for Pd, and enrichment factors between 3 for Hg, and 33 for Os were obtained with a precision ≤5%(%RSD). The accuracy of the method was validated by determining the eight target elements in a certifiedreference material TMDA 54.5 and by the analysis of spiked tap water, mineral water and sea water samplestaken from Málaga (Spain). The obtained results were in good agreement with the certified values and highrecoveries were achieved for the spiked samples. Thus, the new adsorbent has demonstrated to be useful for thepreconcentration of elements with quite different properties, such as noble metals, Sb and Hg, with a samplethroughput of about 13 h−1 and low consumption of reagents and samples.
PB Elsevier
YR 2019
FD 2019
LK https://hdl.handle.net/10630/36476
UL https://hdl.handle.net/10630/36476
LA eng
NO J.C García-Mesa, P. Montoro Leal, M.M López Guerrero, E.I Vereda Alonso, Simultaneous determination of noble metals, Sb and Hg by magnetic solid phase extraction on line ICP OES based on a new functionalized magnetic graphene oxide, Microchemical Journal, Volume 150, 2019, 104141, ISSN 0026-265X, https://doi.org/10.1016/j.microc.2019.104141. (https://www.sciencedirect.com/science/article/pii/S0026265X19308926)
NO Universidad de Málaga (Proyecto Puente UMA), fondos FEDER  and Junta de Andalucía
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026