Abstract
We report a high-throughput chip-based nanoelectrospray ionization method coupled with Fourier transform mass spectrometry to screen for local anesthetics in samples collected by swabbing. These drugs have been used to mask pain on the limbs of walking horses after forbidden practices of soring or physical abuse. Optimized for lidocaine, the method afforded sub-ppm mass accuracy for nine local anesthetics included in the study. From doped cotton swabs, two third and all of the analytes were detected after adding 10ng and 100ng of each drug, respectively. Benzocaine and/or lidocaine were found on positive swab samples collected during walking horse competitions.
Original language | English |
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Pages (from-to) | 533-537 |
Number of pages | 5 |
Journal | Journal of Mass Spectrometry |
Volume | 50 |
Issue number | 3 |
DOIs | |
State | Published - Mar 2015 |
Keywords
- FTICR
- local anesthetics
- nanoelectrospray ionization
- screening
- walking horses