中文摘要：

分析和鉴定泽泻提取物中的化学成分。采用高效液相色谱与飞行时间质谱联用技术（HPLC-TOF-MS），在正离子检测模式下用全扫描方式获得高分辨质谱数据，结合Agilent Mass Hunter Qualitative Analysis软件、PCDL、数据库和参考文献，总结已知化学成分的质谱裂解规律，对泽泻中的三萜类成分进行定性鉴别。泽泻提取物中共鉴定了22种三萜化合物。实验结果为泽泻的物质基础及质量控制研究提供了理论依据。

英文摘要：

The chemicalconstituents of the extract of Alisma orientalis （Sam.） Juzep were analyzed and authenticated. HPLC-TOF-MS technology was applied for high resolution mass spectrometry data operated in positive ion mode in full scan mode. With Agilent Mass Hunter Qualitative Analysis software, PCDL database and references, separating components in Alisma orientalis （Sam.）Juzep, based on the summary of fragmentation regularities of known chemical composition, 22 triterpene compounds were identified. The experimental results further enrich the research content of the chemical composition and provide certain theoretical basis for material basis and quality control ofAlisma orientalis （Sam.）Juzep.