Iron oxide functionalized graphene nano-composite for dispersive solid phase extraction of chemical warfare agents from aqueous samples

Chinthakindi, Sridhar; Purohit, Ajay Kumar; Singh, Varoon; Tak, Vijay; Goud, D. Raghavender; Dubey, D. K.; Pardasani, Deepak

doi:10.1016/j.chroma.2015.03.033

Cited by 33 publications

(16 citation statements)

References 23 publications

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“…In general, an increase of ionic strength can decrease the solubility of the analytes in an aqueous sample solution due to the salt‐out effect and therefore will enhance their partitioning into the adsorbent, which is favorable for the extraction . But on the other hand, the presence of salt can also hinder the transfer of the analytes to the surfaces of the adsorbent due to the increase in the density and viscosity of the sample solution, which is unfavorable for the extraction .…”

Section: Resultsmentioning

confidence: 99%

β‐Cyclodextrin polymer@Fe₃O₄ based magnetic solid‐phase extraction coupled with HPLC for the determination of benzoylurea insecticides from honey, tomato, and environmental water samples

Liang

Hao

et al. 2018

J of Separation Science

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In this work, a magnetic β-cyclodextrin polymer was successfully prepared and used as an adsorbent for the magnetic solid-phase extraction of six benzoylurea insecticides (diflubenzuron, triflumuron, hexaflumuron, teflubenzuron, flufenoxuron, and chlorfluazuron) from honey, tomato, and environmental water samples. The influence of the main experimental conditions on the extraction was studied. Under the optimized conditions, the β-cyclodextrin polymer@Fe O showed an excellent extraction performance for the benzoylurea insecticides. A good linearity was obtained for the analytes in the range of 3.0-800 ng/g for honey samples, 0.3-160 ng/g for tomato samples, and 0.1-80.0 ng/mL for water samples, with the correlation coefficients above 0.9998. Satisfactory repeatabilities were achieved, with the relative standard deviations less than 5.7%. The limits of detection (S/N = 3) of the method for the benzoylurea insecticides were 0.2-0.8 ng/g for honey samples, 0.04-0.10 ng/g for tomato samples, and 0.02-0.05 ng /mL for water samples. The method was successfully used for the determination of the six benzoylurea insecticides residues in honey, tomato, and environmental water samples with a satisfactory result.

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Section: Resultsmentioning

confidence: 99%

β‐Cyclodextrin polymer@Fe₃O₄ based magnetic solid‐phase extraction coupled with HPLC for the determination of benzoylurea insecticides from honey, tomato, and environmental water samples

Liang

Hao

et al. 2018

J of Separation Science

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“…The current main techniques employed to treat pesticides are advanced oxidation and chemical-microbial degradation of the compound. Adsorption onto several different materials has also been used as an end of pipe treatment (Suo et al, 2018;Zheng et al, 2016) Many researchers nowadays have been studying the adsorption of pesticides by graphene-derived nanomaterials due to their selectiveness, versatility, strong mechanical and other key surface properties (Lazarevic-Pasti et al, 2018;Chinthakindi et al, 2015). Table 1 summarizes the results of several functionalized graphene and GO nanocomposites employed as adsorbent of different classes of pesticides and herbicides found in the literature.…”

Section: Pesticidesmentioning

confidence: 99%

Functionalized Graphene-Based Materials as Innovative Adsorbents of Organic Pollutants: A Concise Overview

Fraga

Carvalho

Ghislandi

et al. 2019

Braz. J. Chem. Eng.

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The functionalization of graphene nanosheets is the cutting edge of materials sciences nowadays. Such research promotes the development of innovative, low cost and highly capable sorbents. This review article aims to assemble the available information on functionalized graphene used for the adsorption of organic pollutants and establishes a critical comparison between the data reported in the literature. Various optimal experimental conditions (pH, temperature, contact time, adsorbent dosage) and adsorbent characterization methods (FTIR, Raman, XPS spectra, XRD, TEM and AFM) have been listed to enlighten adsorption mechanisms, capacity and limiting aspects. Moreover, adsorption isotherms, kinetics and thermodynamic data of different functionalized graphene-based materials towards a wide range of organic pollutants were analyzed and tabulated. In each evaluation topic, environmental and human health protection is subject for discussion, as well as the scientific breakthrough works available in high impact journals in the field.

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“…Chemical warfare agents (CWAs) are extremely toxic compounds intended for use in war and terrorist activities . These chemicals have, unfortunately, already shown their capabilities in recent incidents related to military and terrorist activities .…”

Section: Introductionmentioning

confidence: 99%

Identification of G‐nerve agents at picogram levels from complex organic samples containing hydrocarbon interferences by aqueous extraction, followed by derivatization and liquid chromatography‐mass spectrometry analysis

et al. 2019

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The chromatograms obtained from the gas chromatography-electron ionization mass spectrometric (GC-EI-MS) analysis of extracts containing G-nerve agents in the presence of diesel, gasoline, etc., are dominated by hydrocarbon backgrounds that "mask" the G-nerve agents, leading to severe difficulties in identification. This paper presents a practical solution for this challenge by transferring the G-nerve agents from the organic phase into the aqueous phase using liquid-liquid extraction (LLE), followed by derivatization with 2-[(dimethylamino)methyl]phenol (2-DMAMP), allowing ultrasensitive LC-ESI-MS/MS analysis of the G-derivatives. The proposed approach enables rapid identification of trace amounts of G-nerve agents with limits of identification (LOIs) at the pg/mL scale.

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Iron oxide functionalized graphene nano-composite for dispersive solid phase extraction of chemical warfare agents from aqueous samples

Cited by 33 publications

References 23 publications

β‐Cyclodextrin polymer@Fe₃O₄ based magnetic solid‐phase extraction coupled with HPLC for the determination of benzoylurea insecticides from honey, tomato, and environmental water samples

β‐Cyclodextrin polymer@Fe₃O₄ based magnetic solid‐phase extraction coupled with HPLC for the determination of benzoylurea insecticides from honey, tomato, and environmental water samples

Functionalized Graphene-Based Materials as Innovative Adsorbents of Organic Pollutants: A Concise Overview

Identification of G‐nerve agents at picogram levels from complex organic samples containing hydrocarbon interferences by aqueous extraction, followed by derivatization and liquid chromatography‐mass spectrometry analysis

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Iron oxide functionalized graphene nano-composite for dispersive solid phase extraction of chemical warfare agents from aqueous samples

Cited by 33 publications

References 23 publications

β‐Cyclodextrin polymer@Fe3O4 based magnetic solid‐phase extraction coupled with HPLC for the determination of benzoylurea insecticides from honey, tomato, and environmental water samples

β‐Cyclodextrin polymer@Fe3O4 based magnetic solid‐phase extraction coupled with HPLC for the determination of benzoylurea insecticides from honey, tomato, and environmental water samples

Functionalized Graphene-Based Materials as Innovative Adsorbents of Organic Pollutants: A Concise Overview

Identification of G‐nerve agents at picogram levels from complex organic samples containing hydrocarbon interferences by aqueous extraction, followed by derivatization and liquid chromatography‐mass spectrometry analysis

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β‐Cyclodextrin polymer@Fe₃O₄ based magnetic solid‐phase extraction coupled with HPLC for the determination of benzoylurea insecticides from honey, tomato, and environmental water samples

β‐Cyclodextrin polymer@Fe₃O₄ based magnetic solid‐phase extraction coupled with HPLC for the determination of benzoylurea insecticides from honey, tomato, and environmental water samples