
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.
In addition to existing RP based methods, a method is presented for the determination of oligonucleotides using YMC’s strong, non-porous anion exchanger BioPro IEX QF.






