Table 2.
PAH method information and summary statistics for PAHs that correspond to OH-PAHs. Method information includes the Chemical Abstracts Service (CAS) number, molecular weight, and limit of detection (LOD).
| Target PAH | CAS Number | Molec-ular Weight (g/mol) | Instrument LODa (log2 pmol/g wristband) |
Number of Wristbands Without Matrix Interferenceb | Detection Frequency (%)c | Median (log2 pmol/g wristband) | Range (log2 pmol/g wristband) |
Interquartile Range (log2 pmol/g wristband) |
|---|---|---|---|---|---|---|---|---|
| Naphthalene | 91–20-3 | 128.2 | 10.5 | 109 | 100% | 16.4 | 11.0 – 21.5 | 1.48 |
| Fluorene | 86–73-7 | 166.2 | 9.70 | 80 | 96% | 16.2 | <LOD – 18.9 | 0.96 |
| Phenanthrene | 85–01-8 | 178.2 | 8.82 | 80 | 99% | 18.1 | <LOD – 20.8 | 0.83 |
| Pyrene | 129–00-0 | 202.3 | 8.51 | 100 | 76% | 15.3 | <LOD – 17.8 | 1.37 |
Wristband mass was used to convert instrument LODs into log2 pmol/g wristband units. We used the 5.71 g wristband mass value in the LOD unit conversion to present the lowest range of values. In subsequent data analysis, the appropriate corresponding LOD was compared to each PAH concentration.
In some cases, we were unable to detect a surrogate due to matrix interference and, therefore, were unable to quantify the target analytes related to the undetected surrogate. We report the number of wristbands for each target analyte that did not have matrix interference.
Detection frequency was calculated by dividing the number of wristbands with the target analyte detected by the number of wristbands in the study without matrix interference. Results rounded to the nearest percentage point.