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. Author manuscript; available in PMC: 2009 Jul 14.
Published in final edited form as: J Chromatogr A. 2007 Oct 10;1172(2):127–134. doi: 10.1016/j.chroma.2007.09.075

Figure 5.

Figure 5

Base peak chromatograms from 1D and 2D separation of small molecules from E. coli. RPLC was performed using 30 cm × 25 μm I.D. column. 2D was performed by off-line fraction collection in 10 minute step intervals from SAX capillary column. [Brackets] indicate the average number of small molecules detected. A:1-D RPLC-MS [170] B-G 2-D SAX-RPLC B: 5 mM NH4HCO2 fraction [79] C. 100 mM NH4HCO2 fraction [46] D. 200 mM NH4HCO2 fraction [45] E. 300 mM NH4HCO2 fraction [38] F. 400 mM NH4HCO2 fraction [19] G. 500 mM NH4HCO2 fraction [16]