Table 1:

Distribution of dust OPEs and RBFRs and Urinary OPEs (N = 342)

Exposure	Parent Compound	LOD or machine reading limita	% Detected	GM (SE)	5th-95th percentile
Dust concentrations (μg/g dust)
TCEP	TCEP	0.10	78.8	0.67 (0.07)	0.06 – 9.31
TCIPP	TCIPP	0.10	97.4	2.05 (0.17)	0.23 – 22.56
TDCIPP	TDCIPP	0.10	97.4	1.87 (0.15)	0.25 – 13.20
TPHP	TPHP	0.10	98.2	1.29 (0.10)	0.17 – 11.19
EH-TBB	EH-TBB	0.002	100.0	0.06 (0.004)	0.01 – 0.57
BEH-TEBP	BEH-TEBP	0.002	100.0	0.14 (0.01)	0.02 – 0.73
Dust loadings (mg/m2)
TCEP	TCEP	–	–	0.15 (0.02)	0.01 – 3.34
TCIPP	TCIPP	–	–	0.45 (0.04)	0.06 – 9.24
TDCIPP	TDCIPP	–	–	0.41 (0.04)	0.04 – 5.73
TPHP	TPHP	–	–	0.28 (0.02)	0.03 – 2.41
EH-TBB	EH-TBB	–	–	0.01 (0.001)	0.001 – 0.16
BEH-TEBP	BEH-TEBP	–	–	0.03 (0.003)	0.003 – 0.25
Urinary OPEs (ug/L)
At 16 weeks gestation
BCEP	TCEP	0.10	88.5	0.54 (0.04)	0.07 – 5.19
BCIPP	TCIPP	0.10	32.7	–	–
BDCIPP	TDCIPP	0.10	95.7	0.69 (0.04)	0.11 – 4.72
DPHP	TPHP	0.10	98.9	1.54 (0.10)	0.23 – 9.70
At 26 weeks gestation
BCEP	TCEP	0.10	84.1	0.50 (0.04)	0.07 – 7.45
BCIPP	TCIPP	0.10	18.8	–	–
BDCIPP	TDCIPP	0.10	89.4	0.54 (0.04)	0.07 – 4.85
DPHP	TPHP	0.10	97.6	1.10 (0.08)	0.15 – 6.16
At delivery
BCEP	TCEP	0.10	87.5	0.54 (0.04)	0.07 – 7.09
BCIPP	TCIPP	0.10	12.5	–	–
BDCIPP	TDCIPP	0.10	92.5	0.62 (0.05)	0.07 – 5.83
DPHP	TPHP	0.10	99.4	1.52 (0.10)	0.23 – 11.26
Average
BCEP	TCEP	0.10	–	0.72 (0.05)	0.13 – 6.98
BCIPP	TCIPP	0.10	–	–	–
BDCIPP	TDCIPP	0.10	–	0.81 (0.05)	0.16 – 4.55
DPHP	TPHP	0.10	–	1.79 (0.09)	0.46 – 7.31

Abbreviations: GM: geometric mean, SE: standard error, TCEP: tris(2-chloroethyl) phosphate, TCIPP: tris(1-chloro-2-propyl) phosphate, TDCIPP: tris(1,3-dichloroisopropyl) phosphate, TPHP: triphenyl phosphate, EH-TBB: 2-ethylhexyl-2,3,4,5-tetrabromobenzoate, BEH-TBP: bis(2-ethylhexyl) tetrabromophthalate; BCEP: bis-2-chloroethyl phosphate, BCIPP: bis(1-chloro-2-propyl) phosphate, BDCIPP: bis(1,3-dichloro-2-propyl) phosphate, DPHP: diphenyl phosphate. Urinary OPEs adjusted for specific gravity.

^aLOD used for OPEs or machine reading limits used for RBFRs