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. Author manuscript; available in PMC: 2018 Dec 29.
Published in final edited form as: J Chromatogr A. 2017 Nov 14;1530:112–119. doi: 10.1016/j.chroma.2017.11.023

Table 3.

Measured values for k′, Dm, Deff, and DeffDm along with the conditions used for the Hypercarb column (4.6 mm × 100 mm, 3 μm) at 30 °C.

Analyte Mobile phase k Dm (cm2/s) Deff (cm2/s)
DeffDm
Acetone 5/95
Water/MeOH
0 2.61 ± 0.05 × 10−5 1.25 × 10−5 0.48
2-MHA 5/95
Water/MeOH
0.87 9.62 ± 0.17 × 10−6 2.9 × 10−6 0.30
Hippuric acid 5/95
Water/MeOH
1.95 9.51 ± 0.17 × 10−6 2.0 × 10−6 0.21
3-MHA 5/95
Water/MeOH
4.72 9.45 ± 0.17 × 10−6 1.5 × 10−6 0.16
4-MHA 5/95
Water/MeOH
6.40 9.25 ± 0.16 × 10−6 1.4 × 10−6 0.15
4-MHA 25/75
Water/MeOH
16.3 5.82 ± 0.10 × 10−6 7.2 × 10−7 0.12
4-MHA 40/60
Water/MeOH
41.2 4.81 ± 0.09 × 10−6 4.7 × 10−7 0.10