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. Author manuscript; available in PMC: 2014 Feb 22.

Published in final edited form as: J Chromatogr A. 2012 Dec 26;1278:133–144. doi: 10.1016/j.chroma.2012.12.041

Fig. 5 — The elution order of PCB 91 atropisomers on the 20B, BDM, BGB, CB and CD columns reveals an inversion in the elution of the atropisomers on the BDM and CB columns compared to 20B, BGB and CD. (A) Incubation, 20B column, EF = 0.37; (B) racemic standard, 20B column, EF = 0.50; (C) incubation, BDM column, EF = 0.57; (D) racemic standard, BDM column, EF = 0.50; (E) incubation, BGB column, EF = 0.38; (F) racemic standard, BGB column, EF = 0.48; (G) incubation, CB column, EF = 0.56; (H) racemic standard, CB column, EF = 0.50; (I) incubation, CD column, EF = 0.43; (J) racemic standard, CD column, EF = 0.50.

Fig. 5 — The elution order of PCB 91 atropisomers on the 20B, BDM, BGB, CB and CD columns reveals an inversion in the elution of the atropisomers on the BDM and CB columns compared to 20B, BGB and CD. (A) Incubation, 20B column, EF = 0.37; (B) racemic standard, 20B column, EF = 0.50; (C) incubation, BDM column, EF = 0.57; (D) racemic standard, BDM column, EF = 0.50; (E) incubation, BGB column, EF = 0.38; (F) racemic standard, BGB column, EF = 0.48; (G) incubation, CB column, EF = 0.56; (H) racemic standard, CB column, EF = 0.50; (I) incubation, CD column, EF = 0.43; (J) racemic standard, CD column, EF = 0.50.