Table 2.
Dust-averaged Br concentration by SEM/EDS in NCCLS dust samples. compared to PBDE congener distribution as determined by GC-MS (Whitehead et al, 2010). SEM/EDS results are given in parentheses when below the analysis sensitivity. Pearson correlations (rp) between SEM/EDS and GC-MS results are presented with and without the outlier Sample 3.
| Sample ID | 1 | 2 | 3 | 4 | 5 | 6 | rp (SEM/EDS vs. GC- MS) | rp without Sample 3 |
|---|---|---|---|---|---|---|---|---|
| SEM/EDS (ppm) | ||||||||
| Br | (0) | 73 | 64 | 18 | 31 | (20) | -- | -- |
| Analysis sensitivity | 16 | 12 | 11 | 8 | 23 | 22 | -- | -- |
| GC-MS (ppm) | ||||||||
| BDE-209 | 0.56 | 91 | 3.3 | 5.4 | 31 | 8.7 | 0.66 | 0.98 |
| BDE-47 + BDE-99 | 26 | 2.7 | 76 | 120 | 2.1 | 0.71 | -0.07 | -0.33 |
| BDE-47 + BDE-99 + BDE-209 | 27 | 94 | 80 | 130 | 33 | 9.4 | 0.44 | 0.40 |