Table 3.
Average diffuse reflection (DR) mass from Tulane and NIOSH for each sampling site compared to NIOSH gravimetric mass. Samples below the limit of detection or beyond calibration range in either laboratory were not included, nor were samples considered outliers in the comparison (138 samples met criteria)
| Sampling site | DR mass by Tulane (mg) | DR mass by NIOSH (mg) | Gravimetric mass (mg) |
|---|---|---|---|
| Site A | 0.244 | 0.199 | 0.358 |
| Site B | 0.488 | 0.314 | 1.108 |
| Site C | 0.175 | 0.170 | 0.406 |
| Site D | 1.073 | 0.900 | 1.078 |
| Site E | 0.761 | 0.780 | 1.634 |
| Site F | 0.533 | 0.461 | 1.624 |