. Author manuscript; available in PMC: 2012 Nov 15.

Published in final edited form as: Environ Sci Technol. 2011 Oct 19;45(22):9590–9596. doi: 10.1021/es2014727

Table 1.

Comparison of the yields and enantiomeric fractions of hydroxylated metabolites of PCB 91, PCB 95, PCB 132 and PCB149 determined using different columns.^$

PCB metabolite	Yield^&	BDM	CB	CD	BGB^*
PCB 91		-	-	0.43	-
5–91	20 %	0.54^a	0.54^b	0.54^a	0.46
PCB 95		-	-	0.64	-
5–95	8.8 %	0.36^a	0.32^a	0.33^a	nr
X-95		nr	0.33	0.33	0.68
PCB 132		-	-	0.39	-
5′-132	16 %	0.30^a	0.31^a,^#	0.31	0.71^a,^#
PCB 149		-	-	0.46	-
5–149	2.6 %	0.66	0.65	0.65	nr

The enantiomeric fraction of the parerent PCB is shown for comparison;

expressed as percent of the PCB used in the respective incubation (0.8 μmol);

the elution order of the atropisomers was reversed on the BGB column;

analysis conducted at 170°C;

racemic standard co-elutes with another peak;

EF of racemic standard 0.55.

Abbreviations of columns: BGB - BGB-172; BDM - Chiral-Dex B-DM, BPM - Chiral-Dex B-PM; CB - Cyclosil-B; CD - Chirasil-Dex (CD); GTA - Chiral-Dex G-TA. See Table S3 for additional information regarding the columns.