Department of Chemistry, Indian Institute of Technology Madras, Chennai, 600036, India.
Analyst. 2011 Aug 7;136(15):3066-8. doi: 10.1039/c1an15339k. Epub 2011 Jun 21.
Desorption electrospray ionization was employed for fast and direct ambient detection of the anti-tumor drug, camptothecin, and its derivative, 9-methoxycamptothecin in Nothapodytes nimmoniana. Different parts of the plant such as leaves, stems and bark were examined. The ion intensities suggest that the concentration in bark is higher than that in the leaves and stems. The method does not require any sample preparation or preseparation. The identity of the alkaloids was further confirmed by tandem mass spectrometry.
解吸电喷雾离子化被用于快速和直接的环境检测喜树碱及其衍生物 9-甲氧基喜树碱在坡垒中的含量。检测了该植物的不同部位，如叶子、茎和树皮。离子强度表明，树皮中的浓度高于叶子和茎中的浓度。该方法不需要任何样品制备或预分离。通过串联质谱进一步证实了生物碱的身份。
