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摘要
A novel platform of neutral desorption-extractive electrospray ionization mass spectrometry (ND-EE-SI-MS) for direct and rapid detection oftetracycline (TC) in honey sample without any sample pretreatment wa constructed. The results showed that the limit of detection was 1. 08 ng/mL with a linear working range from 20 to 1000 ng/mL(R-2>0. 997) toward TC in honey; the recoveries and relative standard deviations of TC from spiked samples, at three fortification levels (50, 500, 1000 ng/mL), were 94. 26%, 98. 38%, 103. 00% and 3. 28%, 1. 39%, 1. 12%, respectively. Eight common commodity honey samples were detected by this method and the results reveal that 2 of them contain traces of TC, while TC is not found in the rest samples. HPLC was also applied for TC detection in the asme honey samples, and TC is not found. Therefore, this ND-EESI-MS method is sensitive, rapid and specific for quantitative analysis of TC in honey without any sample pretreatment.
