Table 1. Concentrations (ng/g Dust) of Flame Retardants and Legacy Organohalogens in California House Dust from 16 Homes Sampled in 2006 and 2011.

			2006 samples (round 1; n = 16)				2011 samples (round 2; n = 16)
chemical name	abbreviationa	LOQb	% > LOQ	min.	median	max.	% > LOQ	min.	median	max.
Polybrominated Diphenyl Ethers (PBDEs)
2,4,4′-tribromodiphenyl ether	BDE 28	2	100	5	26	270	100	3	14	310
2,2′,4,4′-tetrabromodiphenyl ether	BDE 47	2	100	270	2300	23 000	100	140	1,000	17 000
2,3′,4,4′-tetrabromodiphenyl ether	BDE 66	2	100	8	64	520	100	4	23	1800
2,2′,3,4,4′-pentabromodiphenyl ether	BDE 85	3	100	13	110	1300	100	9	66	6000
2,2′,4,4′,5-pentabromodiphenyl ether	BDE 99	2	100	280	2200	24 000	100	190	1100	25 000
2,2′,4,4′,6-pentabromodiphenyl ether	BDE 100	2	100	56	520	4900	100	37	240	11 000
2,2′,4,4′,5,5′-hexabromodiphenyl ether	BDE 153	3	100	2	250	2400	100	21	150	7800
2,2′,4,4′,5,6′-hexabromodiphenyl ether	BDE 154	3	100	22	240	1800	100	17	110	6700
2,2′,3,4,4′,5′,6-heptabromodiphenyl ether	BDE 183	4	100	9	28	770	100	3	18	920
2,2′,3,3′,4,4′,5,6′-octabromodiphenyl ether	BDE 196	4	88	<4	7.5	240	56	<4	4	180
2,2′,3,3′,4,4′,6,6′-octabromodiphenyl ether	BDE 197	4	81	<4	9	530	56	<4	4	230
2,2′,3,4,4′,5,5′,6-octabromodiphenyl ether	BDE 203	4	81	<4	5	130	50	<4	2	110
decabromodiphenyl ether	BDE 209	10	100	580	1400	15 000	100	110	1200	8500
Firemaster 550
2-ethylhexyl-2,3,4,5-tetrabromobenzoate	EH-TBB (or TBB)	2	100	4	48	740	100	45	100	5900
bis(2-ethylhexyl)-3,4,5,6-tetrabromophthalate	BEH-TEBP (or TBPH)	2	100	36	140	1900	94	<2	260	3800
triphenyl phosphate	TPHP	20	100	580	3000	14 000	100	790	2800	36 000
Tetrabromobisphenol A
tetrabromobisphenol A	TBBPA	10	94	<10	260	3400	100	22	200	2000
Hexabromocyclododecane
α-hexabromocyclododecane	α-HBCYD (or α-HBCD)	5	100	31	62	710	100	17	62	910
β-hexabromocyclododecane	β-HBCYD (or β-HBCD)	5	100	8	18	330	100	7	16	230
γ-hexabromocyclododecane	γ-HBCYD (or γ-HBCD)	5	100	29	94	6700	100	13	73	790
hexabromocyclododecane	Σ HBCYD (or HBCD)	5	100	82	190	6800	100	39	160	1800
Other Brominated Flame Retardants (BFRs)
hexabromobenzene	HBB	2	50	<2	1	8	31	<2	<2	13
hexachlorocyclopentadienyl-dibromocyclooctane	DBHCTD (or HCDBCO)	5	6	<5	<5	9	25	<5	<5	72
1,2-bis(2,4,6-tribromophenoxy)ethane	BTBPE	2	100	7	30	220	100	3	12	130
decabromodiphenylethane	DBDPE	10	94	<10	51	430	100	18	140	2800
tetrabromobisphenol A - bis(2,3-dibromopropylether)	TBBPA-BDBPE (or TBBPA-dbpe)	10	75	<10	22	180	50	<10	7	560
α-1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane	α-DBE-DBCH (or α-TBECH)	2	6	<2	<2	13	19	<2	<2	25
β-1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane	β-DBE-DBCH (or β-TBECH)	2	6	<2	<2	11	12	<2	<2	16
γ-1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane	γ-DBE-DBCH (or γ-TBECH)	2	0	–	–	–	6	<2	<2	3
δ-1,2-dibromo-4-(1,2-dibromoethyl)cyclohexane	δ-DBE-DBCH (or δ-TBECH)	2	0	–	–	–	0	–	–	–
2,4,6-tribromophenyl allyl ether	TBP-AE (or ATE)	2	0	–	–	–	0	–	–	–
2-bromoallyl-2,4,6-tribromophenyl ether	TBP-BAE (or BATE)	2	0	–	–	–	0	–	–	–
2,4,6-tribromophenyl 2,3-dibromopropyl ether	TBP-DBPE (or DPTE)	2	6	<2	<2	2	6	<2	<2	11
α-1,2,5,6-tetrabromocyclooctane	α-TBCO	2	6	<2	<2	2	0	–	–	–
β-1,2,5,6-tetrabromocyclooctane	β-TBCO	2	0	–	–	–	0	–	–	–
octabromo-1,3,3-trimethyl-1-phenylindane	OBTMPI (or OBIND)	5	44	<5	<5	130	25	<5	<5	62
Halogenated Organophosphate Flame Retardants (OPFRs)
tris(2-chloroethyl)-phosphate	TCEP	20	100	610	5100	160 000	100	330	2700	110 000
tris(1-chloro-2-propyl)-phosphate	TCIPP (or TCPP)	20	100	340	2100	120 000	100	490	2200	140 000
tris(1,3-dichloro-isopropyl)-phosphate	TDCIPP (or TDCPP)	20	100	730	2800	24 000	100	920	2100	44 000
tris(2,3-dibromopropyl) phosphate	TDBPP	20	62	<20	35	8900	38	<20	<20	310
Nonhalogenated Organophosphate Flame Retardants (OPFRs)
triethyl-phosphate	TEP	20	56	<20	28	410	31	<20	<20	250
tri-n-propyl-phosphate	TnPP (or TPP)	20	0	–	–	–	0	–	–	–
tri-iso-butyl-phosphate	TIBP (or TiBP)	80	56	<80	84	180	19	<80	<80	120
tri-n-butyl-phosphate	TNBP (or TnBP)	80	50	<80	32	1800	38	<80	<80	1800
tri-(2-butoxyethyl)-phosphate	TBOEP (or TBEP)	300	100	2300	12 000	68 000	100	790	11 000	170 000
tri-(2-ethylhexyl)-phosphate	TEHP	200	19	<200	<200	3700	12	<200	<200	340
ethylhexyl diphenyl phosphate	EHDPP	100	100	180	610	3000	100	140	560	1500
tricresyl phosphate	TMPP (or TCP)	20	100	330	1000	4400	100	180	680	10 000
Dechlorane Plus (DP)
syn-Dechlorane Plus	syn-DP	2	81	<2	3	22	44	<2	<2	7
anti-Dechlorane Plus	anti-DP	2	100	3	7.5	35	75	<2	3	8
Dechlorane Plus	Σ DP	2	100	3	10	47	75	<2	4.5	15
Legacy Compounds
2,2′,4,4′,5,5′-hexachlorobiphenyl	CB 153	5	100	6	18	200	81	<5	9.5	130
2,2′,3,4,4′,5,5′-heptachlorobiphenyl	CB 180	5	94	<5	16	74	75	<5	8.5	90
3,3′,5,5′-tetrabromo biphenyl	BB 80	3	0	–	–	–	6	<3	<3	6
2,2′,4,5′,6-pentabromo biphenyl	BB 103	3	0	–	–	–	6	<3	<3	3
2,2′,4,4′,5,5′-hexabromo biphenyl	BB 153	3	56	<3	4.5	160	44	<3	<3	47
2,2′,3,4,4′,5,5′-heptabromo biphenyl	BB 180	5	0	–	–	–	0	–	–	–
decabromo biphenyl	BB 209	10	0	–	–	–	0	–	–	–
cis-chlordane	CC	5	94	<5	26	250	94	<5	17	180
trans-chlordane	TC	5	94	<5	34	280	100	5	22	220
trans-nonachlor	TN	5	94	<5	19	130	88	<5	11	140
1,1,1-trichloro-2,2-di(4-chlorophenyl)ethane	p,p′-DDT	10	100	44	530	4100	100	50	160	1500
1,1-bis-(4-chlorophenyl)-2,2-dichloroethene	p,p′-DDE	10	94	<10	74	430	88	<10	40	170
1,1-dichloro-2-(2-chlorophenyl)-2-(4-chlorophenyl)ethane	p,p′-DDD	10	88	<10	36	240	75	<10	14	64

^aCompounds were named following the newly proposed nomenclature presented by Bergman et al,⁶¹ with the older name give in parentheses.

^bLOQ, limit of quantification; – indicates insufficient number of detects to calculate summary statistics.