Methods Technology of thin layer chromatography (TLC) and high performance liquid chromatography (HPLC).

方法薄层色谱法及高效液相色谱技术。

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Ultraviolet spectrophotometry(UV), thin-layer chromatography(TLC), gas chromatography(GC)and high-performance liquid chromatography(HPLC)are common in the examination of special impurity.

其中，紫外分光光度法（UV）、薄层色谱法（TLC）、气相色谱法（GC）、高效液相色谱法（HPLC）在特殊杂质的测定中最常见。

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