Table 1.

Limits of detection and frequency of detection for 68 carpet-dust samples

Chemical	LOD, ng/g	Detected	% Detected
Nicotinea	20	44	77
Benzo(a)anthraceneb	2	67	100
Chrysene	2	68	100
Benzo(b)fluoranthene	2	68	100
Benzo(k)fluoranthene	2	68	100
Benzo(a)pyrene	2	66	100
Indeno(1,2,3-c,d)pyrene	2	68	100
Dibenzo(a,h)anthracene	2	66	97
Coronene	4	68	100
Dibenzo(a,e)pyrene	4	68	100
PCB 105	1	26	38
PCB 118	1	45	66
PCB 138	1	52	76
PCB 153	1	59	87
PCB 170	2	28	41
PCB 180	2	51	75

Dust samples were collected from 21 households of Fresno County, California from 2003-2005

LOD = limit of detection

^a N = 57 for nicotine due to chemical interference during GC-MS analysis

^b N = 67 for benzo(a)anthracene due to chemical interference during GC-MS analysis