Table 1.
PBDE congeners | No. of bromines | MDL (ng/g) | Percent detected | Median | IQR | Minimum | Maximum |
---|---|---|---|---|---|---|---|
PentaBDE | |||||||
28 | 3 | 3.0 | 98 | 18 | 10–34 | 1.2 | 394 |
47 | 4 | 5.0 | 100 | 1,173 | 473–2,175 | 62.0 | 32,962 |
99 | 5 | 5.0 | 100 | 1,579 | 633–3,358 | 52.0 | 65,328 |
100 | 5 | 2.0 | 100 | 304 | 121–643 | 15.0 | 10,842 |
153 | 6 | 10.0 | 100 | 196 | 78–395 | 15.0 | 6,118 |
154 | 6 | 10.0 | 100 | 142 | 61–323 | 11.0 | 4,987 |
OctaBDE | |||||||
183 | 7 | 2.0 | 100 | 17 | 11–29 | 1.1 | 987 |
196 | 8 | 2.0 | 63 | 5 | 1–11 | 0.1 | 84 |
197 | 8 | 2.0 | 85 | 8 | 4–14 | 0.2 | 494 |
203 | 8 | 3.0 | 71 | 10 | 3–19 | 0.1 | 304 |
DecaBDEb | |||||||
206 | 9 | 20.0 | 90 | 28 | 15–41 | 0.2 | 443 |
207 | 9 | 0.5 | 74 | 7 | 0.4–20 | 0.02 | 396 |
208 | 9 | 0.5 | 76 | 4 | 0.4–10 | 0.004 | 156 |
209c | 10 | 100.0 | 100 | 938 | 531–1,682 | 12.0 | 126,583 |
Sum of BDEs | 100 | 5,269 | 2,965–8,926 | 304.0 | 131,325 | ||
aPercent detections were rounded to whole numbers; values below the MDL were imputed based on a log-normal distribution and accounting for residence location (urban, suburban, rural) and year of sampling. bConcentrations of BDEs 206, 207, 208, and 209 were corrected for degradation in the GC/MS injector as described in “Methods”; percent detections for BDEs 206, 207, 208, and 209 were based on concentrations corrected for debromination of BDE-209 in the injector. cSeveral samples had PBDEs quantified below the MDL. |