
High-performance liquid chromatography-tandem mass spectroscopy (HPLC–MS/MS) chromatography reveals pyrrolizidine alkaloids (PA)/pyrrolizidine alkaloid N-oxides (PANO) toxin risks in 63 tea samples.
⦁ Determine polymer properties such as molecular weight, dispersity, and branching/conformation. ⦁ How to differentiate molecular structure across the molecular weight distribution.






