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Analysis of benzylpenicillin in milk using MALDI-TOF mass spectrometry with top-down synthesized TiO2 nanowires as the solid matrix

Title
Analysis of benzylpenicillin in milk using MALDI-TOF mass spectrometry with top-down synthesized TiO2 nanowires as the solid matrix
Authors
Kim J.-I.Park J.-M.Noh J.-Y.Hwang S.-J.Kang M.-J.Pyun J.-C.
Ewha Authors
황성주
SCOPUS Author ID
황성주scopus
Issue Date
2016
Journal Title
Chemosphere
ISSN
0045-6535JCR Link
Citation
vol. 143, pp. 64 - 70
Keywords
AntibioticsMALDI-TOF mass spectrometryMilkTitanium oxide nanowires
Publisher
Elsevier Ltd
Indexed
SCI; SCIE; SCOPUS WOS scopus
Abstract
In this work, the wet-corrosion process for the synthesis of titanium oxide (TiO2) nanowires in the anatase phase was optimized as the solid matrix in MALDI-TOF mass spectrometry, and the solid matrix of the TiO2 nanowires was applied to the detection of antibiotics in a daily milk sample. The influence of the alkali concentration and the heat treatment temperature on the crystal structure of the TiO2 nanowires was investigated. The ionization activity of the TiO2 nanowires was estimated for each synthetic condition using amino acids as model analytes with low molecular weights. For the detection of antibiotics in milk, benzylpenicillin was spiked in daily milk samples, and MALDI-TOF mass spectrometry with the TiO2 nanowires was demonstrated to detect the benzylpenicillin at the cut-off concentration of the EU directive. © 2015 Elsevier Ltd.
DOI
10.1016/j.chemosphere.2015.04.002
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자연과학대학 > 화학·나노과학전공 > Journal papers
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