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. Author manuscript; available in PMC: 2016 Sep 21.
Published in final edited form as: Chem Res Toxicol. 2015 Sep 2;28(9):1753–1759. doi: 10.1021/acs.chemrestox.5b00205

Figure 2.

Figure 2

Evaluation of matrix effects. A 5 μL injection of 1:20 pooled urine: 0.1% formic acid in water was injected while infusing 1 μg/mL MCPF-Gly (gray) and MCPA-Gly (black). Matrix effects were not observed at the expected elution time (dashed vertical lines) of either analyte (0.93 min for MCPF-Gly and 1.43 min for MCPA-Gly) in the extracted ion chromatogram for the transitions m/z 156.1 → 81.0 and m/z 170.1 → 74.1, respectively.