HPLC methods were used for the qualitative and quantitative analysis. The purity of carotene crystal was 88.56% by HPLC method.
用高效液相色谱对纯化样品进行了定性和定量分析，结果显示三次重结晶后胡萝卜素纯度为88.56%。
Conclusions Multiwavelength stepwise method has the advantages of convenience and exactness, can be an alternative method for HPLC quantitative analysis.
结论多波长逐步筛选校正法具有简便、准确的优点，可以作为高效液相定量分析的一种替代方法。
Objective A practicable method for separation and quantitative analysis of REV in Levetiracetam tablets by HPLC.
目的采用高效液相色谱法手性拆分左乙拉西坦片中的右旋异构体。
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