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Trace enrichment and characterization of polyphenols in Bistort Rhizoma using weak anion-exchange solid phase extraction and high performance liquid chromatography-quadrupole time-of-flight mass spectrometry
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文摘

Polyphenols were selectively enriched by a weak anion-exchange SPE.

MS/MS fragmentation rules of polyphenols were outlined.

Twenty six trace members were identified for the first time in this herb.

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