PCB-containing wood floor finish is a likely source of elevated PCBs in residents' blood, household air and dust: a case study of exposure

Table 1 PCB concentrations in indoor air, house dust, and residents' serum in two Cape Cod homes

		Indoor air(ng/m³)^a		House dust (micrograms/gram)^a		Serum (ng/g lipid)
Home	Participant	Initial PCBs, LR [52,105,153]	Follow-up PCBs LR (BR) [52,105,153]	Initial PCBs [52, 105, 153]	Follow-up PCBs [52, 105, 153]	Total PCBs (# congeners detected)^b	Sum 10 PCB congeners^c	4,4'-DDE^d
1	1-A	23 [19, 4, <2]	21 (<68) [10, 2.9, 7.7]	21 [1.1, 14, 5.8]	190 [15, 53, 119]	1630 (13)	1520	848
	1-B^e					993 (11)	967	208
2	2-A	35 [25, 6.7, 3.6]	8.0 (13) [8, <2.8, <2.8]	68 [16, 35, 17]	140 [37, 34, 69]	760 (16)	652	292
	2-B					179 (5)	179	96

Abbreviations: PCB, polychlorinated biphenyl; LR, living room; BR, bedroom; ND, not detected; DL, detection limit
^aPCB concentrations reported as sum of PCB 52, 105, 153 in air or dust (<DL values set to 0), followed by results for the 3 individual congeners (PCB 52, 105, 153)
^bSum of the concentrations of all PCB congeners detected in serum (of 33 tested). Values < DL set to 0. Individual congeners reported in Additional File 1
^cLimited to the 10 PCB congeners also measured in NHANES. Values < DL set to 0
^dIncluded as an alternate bioaccumulative, persistent organochlorine

ISSN: 1476-069X