NH2 column was used with the mobile phase of acetonitrile-water (75:25). The differential refractive index detector was used.

采用氨基键合硅胶柱，以乙腈-水(75∶25)为流动相，使用示差折光检测器。

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NH2 column was used with the mobile phase of acetonitrile-water (75:25). The differential refractive index detector was used.

采用氨基键合硅胶柱，以乙腈-水(75∶25)为流动相，使用示差折光检测器。

youdao