Applied Biological Chemistry

Table 2 The toxic equivalency quantities (TEQ) of 12 PCBs that were identified and determined in soil samples collected from Anseong, Korea

From: Monitoring and risk assessment of polychlorinated biphenyls (PCBs) in agricultural soil collected in the vicinity of an industrialized area

Congener (IUPAC no)	TEQ (pg kg⁻¹) for each site
Congener (IUPAC no)	1	2	3	4	5
Non-ortho-substituted PCBs
3,3′,4,4′-TetraCB (77)	0.10	0.21	0.27	0.18	0.05
3,4,4′,5-TetraCB (81)	0.06	0.14	0.13	0.04	0.03
3,3′,4,4′,5-PentaCB (126)	49.56	96.52	69.02	42.12	29.78
3,3′,4,4′,5,5′-HexaCB (169)	0.00	13.94	8.63	3.40	3.73
Mono-ortho-substituted PCBs
2,3,3′,4,4′-PentaCB (105)	0.15	0.16	0.26	0.26	0.30
2,3,4,4′,5-PentaCB (114)	0.02	0.02	0.01	0.02	0.02
2,3′,4,4′,5-PentaCB (118)	0.32	0.36	0.58	0.52	0.57
2′,3,4,4′5-PentaCB (123)	0.02	0.02	0.02	0.02	0.02
2,3,3′,4,4′,5-HexaCB (156)	0.05	0.06	0.10	0.09	0.07
2,3,3′,4,4′,5′-HexaCB (157)	0.02	0.02	0.03	0.02	0.02
2,3′,4,4′,5,5′-HexaCB (167)	0.02	0.03	0.04	0.05	0.04
2,3,3′,4,4′,5,5′-HeptaCB (189)	0.01	0.02	0.01	0.01	0.01
Total	50.00	110.00	80.00	50.00	30.00

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