Kováts保留指数在中药挥发油成分定性中的作用—青皮

Study on the Role of Kováts Retention Index for the Identification of Components in Essential Oil from Chinese Materia Medica as Citri Reticulatae Pericarpium Viride

目的:以青皮为例,研究在质谱定性的基础上,保留指数在中药挥发油成分鉴定中的作用。方法:GC-MS测定青皮挥发油及参比物(系列正构烷烃)的总离子流谱图。根据相关公式计算各待鉴定化合物的保留指数。应用MS与保留指数结合的方式对化合物定性。结果:一些化合物具有几乎相同的质谱,通过保留指数的差异却可以区分它们。结论:保留指数在中药挥发油成分定性中发挥着重要作用。

Objective： To study the function of retention index（RI） on the qualitative results based on the MS qualitative outcome of volatile oil from Chinese material medica（CMM） as Citri Reticulatae Pericarpium Viride（CRPV）.Method： The total ion chromatograms from essential oil of CRPV and referred materials as series n-alkanes were gotten by the GC-MS.The RIs of constituents in volatile oil were calculated by a related formula.The components were recognized by MS and RIs.Result： Some compounds have essentially identical mass spectra,while they can be discriminated by RIs.Conclusion： RI plays an important role in the identification of constituents in essential oil from CMM.