Magnetic graphene oxide as a valuable material for the speciation of trace elements

Atomic spectrometry update: review of advances in the analysis of clinical and biological materials, foods and beverages

“…12 Ullah and Tuzen 13 discussed the trends and future perspectives of the miniaturisation of conventional extraction methods, unfortunately mostly related to environmental samples. The use of magnetic graphene oxide (GO) for the pre-concentration and/or speciation of several elements in environmental and food samples was examined by Morales-Benítez et al 14 Progresses in the application of atomic spectrometry techniques to samples of clinical interest, as well as food and beverage samples, are regularly reported in these Updates, but making the most of this overload of information is not an easy task. Reviews related to advances in ICP-MS are discussed in Section 4.1.…”

“…Several reviews of particular pre-concentration/separation procedures have appeared. Morales-Benítez et al 14 reviewed (147 references) the use of GO for the speciation of Ag, Al, As, Cd, Cr, Hg, Pb, Se and Tl in various environmental and food samples. Pre-concentration was frequently mentioned.…”

“…12 Ullah and Tuzen 13 discussed the trends and future perspectives of the miniaturisation of conventional extraction methods, unfortunately mostly related to environmental samples. The use of magnetic graphene oxide (GO) for the pre-concentration and/or speciation of several elements in environmental and food samples was examined by Morales-Benítez et al 14…”

Synthesis of a novel magnetic nanomaterial for the development of a multielemental speciation method of lead, mercury, and vanadium via HPLC-ICP MS

“…Consequently, GO can interact with a huge variety of analytes through physical, hydrogen bonds, and aromatic interactions. However, although the adsorption on GO is good, this material shows several limitations derived from its application, being tedious to use, slow separation from the matrix, and high sample volume requirements [ 23 ]. Besides, iron oxide MNPs (Fe 3 O 4 ) have been exploited as solid-phase sorbents due to their degradability, biocompatibility, chemical stability, low toxicity, and high magnetic response.…”

“…Among the potential magnetic nanomaterials selected to perform the MSPE process in the trace, and even ultra-trace element speciation analysis, the relevance of MGO is increasing. MGO has already been applied for the speciation of Al, Cr, As, Se, Ag, Cd, Hg, and Tl [ 23 ]. However, no analytical method has been found in the bibliography for Pb speciation.…”