Abstract
A fast quantification method for the determination of 11 antineoplastic drugs from wipe samples was developed using micro-scale liquid chromatography in combination with tandem mass spectrometry. The extraction efficiency from the wipes has been investigated using different extraction solvents. The results indicate that a mixture of 70/30 water/isopropanol (v/v) acidified with 0.1% formic acid is suitable to desorb the antineoplastic drugs with sufficient recovery between 80 and 120%. Compared to conventional liquid chromatography, the total analysis time can be reduced to 2.25min using a 50 × 0.3mm column at a flow rate of 25μLmin-1. Ion source parameters as well as the injection volume were optimized to ensure the highest sensitivity. The results of method validation showed an instrumental limit of quantification between 0.0068 and 0.0488ngmL-1 using an injection volume of 4.25μL estimated by the signal to noise ratio. Moreover, the retention time repeatability was determined with a maximum relative standard deviation of 0.4%. Graphical abstract Micro-LC-MS/MS separation of 11 antineoplastic drugs from wipe samples.
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