Solid-phase extraction and fractionation of multiclass pollutants from wastewater followed by liquid chromatography tandem-mass spectrometry analysis

Fernández-Fernández, V.; Ramil, M.; Cela, Rafael; Rodrı́guez, I.

doi:10.1007/s00216-022-04066-8

Cited by 7 publications

(2 citation statements)

References 24 publications

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“…Nevertheless, the use of liquid chromatography–mass spectrometry (LC-MS) as an environmental control method has quickly increased. Additionally, ultraperformance liquid chromatography (UPLC) has made it possible to create more accurate, quick, and environmentally friendly pharmaceutical analysis procedures in the field of liquid chromatography coupled to tandem mass spectrometry. …”

Section: Molecularly Imprinted Polymers Used In Sample Preparation As...mentioning

confidence: 99%

Molecularly Imprinted Polymer-Based Adsorbents for the Selective Removal of Pharmaceuticals from Wastewater: Adsorption Kinetics, Isotherms, and Thermodynamics Studies

Nxumalo,

Mahlambi

2023

Ind. Eng. Chem. Res.

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The majority of pharmaceuticals are found in the environment as mixtures. However, a significant amount of these therapeutic compounds cannot be completely metabolized by the human body; thus, they are excreted through feces and urine and end up in wastewater treatment plants (WWTPs). The presence of pharmaceuticals and the degree to which they can be removed during wastewater treatment are now important research topics. Despite the adoption of various alternative technologies for the treatment of wastewater, the adsorption process is still regarded as a promising method due to its high efficiency, increased simplicity, and lower costs. Recent developments in the adsorption process involve the incorporation of an artificial molecularly imprinted polymer (MIP), which is a potent molecular receptor capable of selectively recognizing and removing pollutants. The MIP has advantageous characteristics, which include high affinity, predetermination, high stability, ease of preparation, and low cost. Notably, MIPs can be applied to the cleanup and preconcentration of analytes as the selective adsorbent of solid-phase extraction (SPE), magnetic solid phase extraction (MSPE), and dispersive solid-phase extraction (dSPE). Furthermore, MIPs can be produced as composite nanomaterials by employing nanoparticles (nanoMIP). The advancements of MIPs employed as sorbent materials for quantitative assessment and purification of pharmaceuticals in environmental water have been given most of the focus. Therefore, this study not only aims to present the fundamental ideas about the application of MIPs as sorbents but also gives an overview of the considerable initiatives made in recent years to enhance the performance of MIPs. Considering this, various current approaches to the development of MIP-based extraction techniques are detailed in the present review. This review also demonstrates how kinetics, thermodynamics, and isotherm models can be used to better understand the behavior of adsorbents and the adsorption process.

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Section: Molecularly Imprinted Polymers Used In Sample Preparation As...mentioning

confidence: 99%

Molecularly Imprinted Polymer-Based Adsorbents for the Selective Removal of Pharmaceuticals from Wastewater: Adsorption Kinetics, Isotherms, and Thermodynamics Studies

Nxumalo,

Mahlambi

2023

Ind. Eng. Chem. Res.

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“…It is related to the retention and elution capacities of the solid used and it is affected by the matrix that contains the analytes. The retention and elution capacities can be determined by using solutions of known concentrations in pure solvents (i.e., standard solutions), whilst effects of the matrix are determined by spiking known concentrations of target compounds and comparing with the results of the standard solutions [ 15 , 16 ]. Typical recoveries of 60–100% are reported in the SPE methods [ 10 , 17 ].…”

Section: Introductionmentioning

confidence: 99%

Reduced Graphene Oxide Aerogels Cartridges for Solid Phase Extraction of Benzotriazoles

et al. 2023

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UV-benzotriazoles have been identified as water micropollutants that cause serious problems for human health and the environment. Their low concentration in water bodies complicates their detection by direct water analysis, slowing the corrective actions to avoid bioaccumulation. In this regard, the use of graphene-based materials with a high affinity for non-polar molecules has been demonstrated to be a potential tool for the optimal separation and concentration of this type of molecules in solid phase extraction (SPE) processes. This work evaluates the potential of novel reduced graphene oxide aerogels (rGO) as extractants of mixtures of three UV-benzotriazoles in water at low concentrations. These rGO aerogels incorporate graphenic domains into a tough structure of polymeric chains by adding graphene oxide during the synthesis of resorcinol-formaldehyde gels. Aerogels with a different content and ordering of graphenic domains were obtained and characterized using Raman, XRD, SEM and nitrogen adsorption isotherms (−196 °C). The rGO aerogels that performed better as solid phase extractants were those containing 60% rGO. Aerogels with lower rGO contents (40%) required a high-temperature (2000 °C) treatment to render competitive results. The SPE methodology using selected rGO aerogels was optimized by varying the elution solvent, elution time and volume. The best performances, i.e., recoveries of 80–100% and enrichment factors of 12.5–50, were accomplished when using 0.8 mL of tetrahydrofuran (THF) as an elution solvent. As a result, a fast (10 min) and simple extraction method of UV-benzotriazoles in water was attained, achieving a detection limit of 1 ng mL−1. Selected aerogels were finally tested for the SPE of spiked samples of river waters, showing a similar performance to that observed with synthetic mixtures.

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Extraction of organic contaminants from grab and composite water samples

De Cesaris,

Felli,

Antonelli

et al. 2025

Sample Handling and Trace Analysis of Pollutants

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Solid-phase extraction and fractionation of multiclass pollutants from wastewater followed by liquid chromatography tandem-mass spectrometry analysis

Cited by 7 publications

References 24 publications

Molecularly Imprinted Polymer-Based Adsorbents for the Selective Removal of Pharmaceuticals from Wastewater: Adsorption Kinetics, Isotherms, and Thermodynamics Studies

Molecularly Imprinted Polymer-Based Adsorbents for the Selective Removal of Pharmaceuticals from Wastewater: Adsorption Kinetics, Isotherms, and Thermodynamics Studies

Reduced Graphene Oxide Aerogels Cartridges for Solid Phase Extraction of Benzotriazoles

Extraction of organic contaminants from grab and composite water samples

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