Skip to main content
. Author manuscript; available in PMC: 2019 Oct 16.
Published in final edited form as: Anal Chem. 2018 Oct 4;90(20):11863–11872. doi: 10.1021/acs.analchem.8b01881

Figure 2.

Figure 2.

(a) Experimental scheme for characterizing NNK metabolites in rats. (b) Optimized sample enrichment strategy wherein most of the known NNK metabolites in PB-induced rat urine were detected.