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Carbon Nanohorn Suprastructures on a Paper Support as a Sorptive Phase

Authors :
Julia Ríos-Gómez
Beatriz Fresco-Cala
María Teresa García-Valverde
Rafael Lucena
Soledad Cárdenas
Source :
Molecules, Vol 23, Iss 6, p 1252 (2018)
Publication Year :
2018
Publisher :
MDPI AG, 2018.

Abstract

This article describes a method for the modification of paper with single-wall carbon nanohorns (SWCNHs) to form stable suprastructures. The SWCNHs form stable dahlia-like aggregates in solution that are then self-assembled into superior structures if the solvent is evaporated. Dipping paper sections into a dispersion of SWCNHs leads to the formation of a thin film that can be used for microextraction purposes. The coated paper can be easily handled with a simple pipette tip, paving the way for disposable extraction units. As a proof of concept, the extraction of antidepressants from urine and their determination by direct infusion mass spectrometry is studied. Limits of detection (LODs) were 10 ng/L for desipramine, amitriptyline, and mianserin, while the precision, expressed as a relative standard deviation, was 7.2%, 7.3%, and 9.8%, respectively.

Details

Language :
English
ISSN :
14203049 and 17314240
Volume :
23
Issue :
6
Database :
Directory of Open Access Journals
Journal :
Molecules
Publication Type :
Academic Journal
Accession number :
edsdoj.7e2f2d1dc5a143eba173142408ee71c3
Document Type :
article
Full Text :
https://doi.org/10.3390/molecules23061252