Study on transport of sophocarpine in millicell system by LC-MS Application of LC MS in the Analysis of Natural Products Ⅰ.Comparative Study for the Aanlysis of Reserpine by Sonic Spray Ionization and Atmospheric Pressure Chemical Ionization Recent progress in polar metabolite quantification in plants using liquid chromatography–mass spectrometry Applications of Liquid Chromatography-Mass Spectrometry in the Qualitative Analysis of Peptides and Proteins Pharmacokinetic study on Danshen Decoction with multiple dosing to awake animal by blood microdialysis method combined with LC-MS