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Magnetic porous carbon derived from a zinc-cobalt metal-organic framework: A adsorbent for magnetic solid phase extraction of flunitrazepam.
- Source :
-
Microchimica Acta . Nov2016, Vol. 183 Issue 11, p3009-3017. 9p. - Publication Year :
- 2016
-
Abstract
- Nanoporous carbon that contains magnetic cobalt nanoparticles (Co-NPC) was fabricated by direct carbonization of a Zn-Co bimetallic zeolitic imidazolate framework. After carbonization, the magnetic Co-NPs are well dispersed in the porous carbon matrix, with the result that the Co-NPC displays strong magnetism. The Co-NPC possesses a high specific surface area, large pore volumes and a microstructure comprised of mesopores and macropores. This results in fast molecular diffusion of the analytes along with excellent adsorption. The Co-NPC was used as a magnetic adsorbent for the enrichment of the benzodiazepine drug flunitrazepam (rohypnol) from tea and Ginger ale prior to high-resolution mass spectrometric analysis. The calibration plot is linear (with a correlation coefficient of >0.9869) in the 1 to 500 ng mL concentration range. The limits of detection are 0.2 ng mL for Ginger ale and 1.0 ngmL for Arizona Tea samples, respectively, which is lower by about 4 orders of magnitude than those reported in the literature. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 00263672
- Volume :
- 183
- Issue :
- 11
- Database :
- Academic Search Index
- Journal :
- Microchimica Acta
- Publication Type :
- Academic Journal
- Accession number :
- 118730005
- Full Text :
- https://doi.org/10.1007/s00604-016-1948-7