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Biomass-derived carbon nanospheres decorated by manganese oxide nanosheets, intercalated into polypyrrole, as an inside-needle capillary adsorption trap sorbent for the analysis of linear alkylbenzenes

Darabi, J, Ghiasvand, A ORCID: 0000-0002-4570-7988 and Haddad, PR ORCID: 0000-0001-9579-7363 2021 , 'Biomass-derived carbon nanospheres decorated by manganese oxide nanosheets, intercalated into polypyrrole, as an inside-needle capillary adsorption trap sorbent for the analysis of linear alkylbenzenes' , Talanta, vol. 233 , pp. 1-9 , doi: 10.1016/j.talanta.2021.122583.

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Abstract

AbstractCarbon nanospheres (CNSs) were derived hydrothermally from biomass (orange peels) and decorated by manganese dioxide (MnO2) nanosheets. The MnO2/CNSs nanocomposite was intercalated into polypyrrole (PPy) during flow-through in-situ electropolymerization of pyrrole on the surface of the inner wall of a stainless-steel needle to prepare an inside-needle capillary adsorption trap (INCAT) device. The surface morphology, thermogravimetric behavior, sorption characteristics, and structure of the MnO2/CNSs@PPy nanocomposite were characterized using scanning electron microscopy (SEM), thermogravimetric analysis (TGA), energy dispersive X-ray analysis (EDX), nitrogen physisorption by the Brunauer-Emmett-Teller (BET) method, dynamic light scattering (DLS) size distribution, and Fourier-transform infrared spectrometry (FT-IR). The INCAT device was coupled with GC-FID and applied for dynamic headspace analysis of linear alkyl benzenes (LABs) in wastewater samples. The effective experimental variables on the extraction efficiency was optimized using a central composite design (CCD) based on response surface methodology (RSM). Under the optimal conditions, the limits of detection (LODs) were in the range of 0.5–1.0 ng mL−1. The calibration plots were linear over the range of 0.01–10 μg mL−1. The relative standard deviations (RSDs%) for intra-day, inter-day, and inter-INCAT precision were calculated 5.3–8.3%, 9.4–13.5%, and 13.6–16.9%, respectively. The developed technique was employed successfully for the analysis of LABs in water and wastewater samples with average recovery values ranging from 92 to 109%. A single INCAT device was used more than 90 times without significant change in its extraction capability.

Item Type: Article
Authors/Creators:Darabi, J and Ghiasvand, A and Haddad, PR
Keywords: MnO2/CNSs@PPy nanocomposite, inside-needle capillary adsorption trap, linear alkyl benzenes
Journal or Publication Title: Talanta
Publisher: Elsevier Science Bv
ISSN: 0039-9140
DOI / ID Number: 10.1016/j.talanta.2021.122583
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© 2021 Elsevier B.V. All rights reserved.

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