方法：用梯度洗脱法测定清火栀麦片中穿心莲内酯和脱水穿心莲内酯的含量。
METHODS Gradient elution method was used to determine the content of andrographolide and dehydroandrographolide in Qinghuo Zhimai tablets.
目的：通过测定穿心莲内酯和脱水穿心莲内酯的含量来控制清火栀麦片的质量。
OBJECTIVE To control the quality of Qinghuo Zhimai tablets by determine the content of andrographolide and chrysophanol dehydroandrographolide.
目的：通过测定穿心莲内酯和脱水穿心莲内酯的含量来控制清火栀麦片的质量。
OBJECTIVE To control the quality of Qinghuo Zhimai tablets by determine the content of andrographolide and chrysophanol dehydroandrographolide.
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