RT Journal Article
T1 Determination of rare earth elements by inductively coupled plasma-mass spectrometry after dispersive solid phase extraction with novel oxidized graphene oxide and optimization with response surface methodology and central composite design
A1 Manousi, Natalia
A1 Gómez Gómez, Beatriz
A1 Madrid Albarrán, María Yolanda
A1 Deliyanni, Eleni
A1 Zachariadis, George
AB A novel oxidized graphene oxide (OGO) material was prepared and employed for the dispersive solid phase extraction (d-SPE) of rare earth elements (REEs) in drinking water and nuts followed by inductively coupled plasma mass spectrometry (ICP-MS) determination. The novel material was characterized by Brunauer–Emmett–Teller (BET) surface area analysis, X-ray diffraction (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM) and Fourier transform-Infrared spectroscopy (FT-IR). Response Surface Methodology (RSM) with a Central Composite Design (CCD) and Derringer's type Desirability Function were employed for the optimization of factors that could possibly influence the extraction recovery. Response surfaces charts illustrated the effects of the examined parameters and their interactions. Under the optimum conditions, the detection limits ranged between 0.03 and 1.08 ng L−1 and the limits of quantification range between 0.09 and 3.26 ng L−1. The relative standard deviations for intra-day repeatability (concentration = 50 ng g−1, n = =5) and the inter-day repeatability (concentration = 50 ng g−1, n = =5 × 3) were 4.2–6.2% and 6.2–7.6%, respectively. The sample preparation procedure with the oxidized graphene oxide nanoparticles was simple and fast while it provided good enrichment factors and extraction recoveries. The method was successfully applied for the determination of trace REEs in almonds, peanuts and walnuts as well as tap and mineral water.
PB Elsevier
SN 0026-265X
YR 2020
FD 2020
LK https://hdl.handle.net/20.500.14352/97267
UL https://hdl.handle.net/20.500.14352/97267
LA eng
NO Manousi, N., et al. «Determination of Rare Earth Elements by Inductively Coupled Plasma-Mass Spectrometry after Dispersive Solid Phase Extraction with Novel Oxidized Graphene Oxide and Optimization with Response Surface Methodology and Central Composite Design». Microchemical Journal, vol. 152, enero de 2020, p. 104428. https://doi.org/10.1016/j.microc.2019.104428.
NO Hellenic Foundation for Research and Innovation (Grecia)
NO Comunidad de Madrid
NO European Commission
NO Ministerio de Ciencia, Innovación y Universidades (España)
DS Docta Complutense
RD 7 abr 2025