Development of an on-line solid phase extraction method based on new functionalized magnetic nanoparticles. Use in the determination of mercury in biological and sea-water samples

Alonso, E. Vereda; López-Guerrero, María del Mar; Cueto, Pilar Colorado; Benítez, José Barreno; Pavón, José Manuel Cano; Torres, A. Garcı́a de

doi:10.1016/j.talanta.2016.03.027

Cited by 57 publications

(14 citation statements)

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“…Coupling MNPs-GO: This step was made after the functionalization of MNPs, and it was based on the work of Nodeh et al [17]. The functionalization process was described elsewhere [26,30]. For the coupling, 500 mg of GO and 500 mg of functionalized MNPs were mixed in water and stirred for 10 min.…”

Section: Methodsmentioning

confidence: 99%

“…The functionalization processes to attach DPTH or PSTH functional groups were carried out previously by the research group [26,30]. The magnetic materials synthesized following the Methods 1-3 were functionalized and called 1-DPTH, 1-PSTH, 2-DPTH, 2-PSTH, 3-DPTH and 3-PSTH, respectively, where the number is relating to the method.…”

Section: Functionalization Of the Prepared Materialsmentioning

confidence: 99%

“…These reagents have been previously anchored to different adsorbent materials, such as silica gel, mesoporous silica and magnetic nanoparticles (MNPs), by the research group. Moreover, it is well-known that DPTH and PSTH form metallic complexes with Ir, Pd, Pt [5], Sb [25], Hg [26] and others [27].…”

Section: Introductionmentioning

confidence: 99%

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Comparative Study of Synthesis Methods to Prepare New Functionalized Adsorbent Materials Based on MNPs–GO Coupling

et al. 2020

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In this work, the synthesis of new adsorbent nanomaterials based on the coupling of magnetic nanoparticles and graphene oxide (MNPs–GO) was addressed. Separately, MNPs and GO have adsorbent properties of great interest, but their use involves certain difficulties. The coupling seeks compensation for their disadvantages, while maintaining their excellent properties. Three different routes to synthesize coupled MNPs–GO were studied and are compared in this work. The three synthesized materials were functionalized with chelating groups: [1,5-bis (di-2-pyridyl) methylene] thiocarbonohydrazide (DPTH) and [1,5-bis(2-pyridyl)3-sulfophenylmethylene] thiocarbonohydrazide (PSTH). The new adsorbent nanomaterials were characterized adequately. Moreover, their capacities of adsorption toward heavy and noble metals were determined, in order to apply them as extractants in magnetic solid-phase extraction to preconcentrate metals in environmental samples. The results showed that one of the routes provided nanomaterials with better adsorbent characteristics and higher yields of functionalization.

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Section: Methodsmentioning

confidence: 99%

Section: Functionalization Of the Prepared Materialsmentioning

confidence: 99%

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Comparative Study of Synthesis Methods to Prepare New Functionalized Adsorbent Materials Based on MNPs–GO Coupling

et al. 2020

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“…The immobilization of the magnetic SPE material onto the inner walls of a knotted reactor placed in the injection valve of the flow injection manifold allows the development of an on-line detection system [63]. The flow injection magnetic solidphase microextraction coupled to CV-ETAAS was used for Hg determination in seafood (fish, mussels).…”

Section: Sample Treatment For Total Hg Determination Assisted By Solid-phase Extractionmentioning

confidence: 99%

Advances in the Determination of Xenobiotics in Foods

2019

Current and Future Developments in Food Science

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Mercury (Hg) pollution is an acknowledged major environmental problem. Considering its extreme toxicity, Hg has recently been included in the top ten list of chemicals of major public health concern according to the World Health Organization. Once released into the environment, it is transformed in aquatic ecosystems by microorganisms into the neurotoxic methylmercury. The hazardous effect is then biomagnified through the trophic/food chain. Diet is considered the main exposure pathway of Hg in humans. Therefore, safety values have been established by food safety authorities in order to protect consumers. Seafood, followed by rice, is the primary source of Hg in the human diet. A variety of analytical methodologies is available for the analysis of Hg and its species in food. This chapter presents recent advances in the determination of Hg in foodstuffs. Special attention is given to innovative Hg (species) extraction and preconcentration systems assisted by nanoparticles. Non-chromatographic approaches, as an alternative to classical chromatographic approaches used for speciation are detailed. The potential and limitations of Hg isotopic analysis in food is also discussed.

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“…Magnetic solid-phase extraction (MSPE) is a new method where it employed the magnetic material as a sorbent and an application of external magnetic field, for the preconcentration of the target analyte from the large volume of sample [1]. The major advantage of MSPE is simplicity, avoiding the use of filtration and centrifugation steps as in traditional solid-phase extraction (SPE), which subsequently promotes faster analysis [2,3].…”

Section: Introductionmentioning

confidence: 99%

Rapid Magnetic Solid-Phase Extraction Based on Graphene Oxide/Magnetite Nanoparticles for the Determination of Non-Steroidal Anti-Inflammatory Drugs and Bisphenol-A in Tap Water

et al. 2019

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A simple and rapid magnetic solid-phase extraction based on reduced graphene oxide/ferroferic oxide (rGO/Fe3O4) coupled with high performance liquid chromatography-diode array detector (HPLC-DAD), was proposed for the determination of naproxen and diclofenac sodium of non-steroidal anti-inflammatory drugs (NSAIDs) and bisphenol-A residue in tap water sample. Fe3O4 was assembled with graphene oxide by facile method. Several important parameters, such as extraction time, desorption time and desorption solvent were studied and optimized. Optimal conditions were then used for the extraction of NSAIDs and bisphenol-A from real samples, prior to HPLC-DAD analysis using C18 column. The proposed method provides good linearity in the range of 1.0-5.0 mg L-1 (R2 naproxene = 0.9983, R2 diclofenac = 0.9960) for NSAIDs and R2 = 0.9919 for bisphenol-A; limit of detection of 0.031 mg L-1 and 0.023 mg L-1 for naproxen and diclofenac, respectively and 0.1785 mg L-1 for bisphenol-A; limit of quantification for naproxen and diclofenac were 0.102 and 0.076 mg L-1, respectively and 0.5949 mg L-1 for bisphenol-A; relative recoveries between 66.21 and 105.60 % for diclofenac and naproxen, respectively and 72.74 % for bisphenol-A; and acceptable reproducibility relative standard deviation (RSD, n = 3) of 6.79 and 11.32 % for diclofenac and naproxen, respectively and 0.93 % for bisphenol-A. The method was successfully applied to tap water sample and the results indicates that small residue of bisphenol-A is present the sample while no traces of NSAIDs was detected.

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Development of an on-line solid phase extraction method based on new functionalized magnetic nanoparticles. Use in the determination of mercury in biological and sea-water samples

Cited by 57 publications

References 43 publications

Comparative Study of Synthesis Methods to Prepare New Functionalized Adsorbent Materials Based on MNPs–GO Coupling

Comparative Study of Synthesis Methods to Prepare New Functionalized Adsorbent Materials Based on MNPs–GO Coupling

Advances in the Determination of Xenobiotics in Foods

Rapid Magnetic Solid-Phase Extraction Based on Graphene Oxide/Magnetite Nanoparticles for the Determination of Non-Steroidal Anti-Inflammatory Drugs and Bisphenol-A in Tap Water

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