
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.
This non-IP-RP method, using ammonium bicarbonate as mobile phase additive, is highly sensitive and suitable for the bioanalysis of therapeutic oligonucleotides.






