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. Author manuscript; available in PMC: 2012 Feb 11.
Published in final edited form as: J Chromatogr A. 2010 Nov 16;1218(6):763–777. doi: 10.1016/j.chroma.2010.11.009

Table 6a.

The Slopes and Intercepts of k' vs. 1/[C+] Obtained on the HC-COOH Phase with Different Cationic Displacers

# of Carbon BIEXa k'RPb
Displacer Cathinone Methcathinone Ephedrine Cathinone Methcathinone Ephedrine
ammonium 0 5.58 10.14 8.40 0.76 2.22 1.66
n-butylamine 4 2.08 3.91 2.99 1.93 4.45 3.48
n-octylamine 8 0.53 0.89 0.74 0.64 1.66 1.31
a

The slope of the linear regression of k' vs. 1/[C+] based on the data in Fig. 5

b

The intercept of the linear regression of k' vs. 1/[C+] based on the data in Fig. 5