Objective to establish a reversed phase high performance liquid chromatography gradient elution method for determination of the related substances in allopurinol sodium for injection.
目的建立测定注射用别嘌醇钠有关物质的高效液相梯度洗脱法。
METHOD HPLC gradient elution method was used with methanol-water as the mobile phase to determine the contents of triptolide in its root, branch and leaf at different periods of its storage.
方法以甲醇-水为流动相，采用HPLC梯度洗脱法，测定了雷公藤药材的根、枝、叶中雷公藤甲素在不同存贮期的含量。
The coal liquefaction oil was separated using gradient elution method and the aromatics were analyzed by gas chromatography and mass spectrometry (GCMS) and 1Hnuclear magnetic resonance (1HNMR).
采用梯度洗脱技术对煤液化油进行了分离，并对芳烃部分进行了气相色谱质谱（GCMS）和核磁共振氢谱（1HNMR）分析。
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