Table 1.
Sampling sites and parameters measured
| Fixed | Community Saturation | Home Outdoor | Home Indoora | Personalb | |
|---|---|---|---|---|---|
| Nominal Sample Duration | 2 weeks | 2 weeks | 2 weeks | 2 weeks | 2-3 days/2 weeksc |
| Number of Sites Per Area | 1-5 | 44-152 | 18-102 | 18-66 | 4-16 |
| Number of Sites Per Area Per 2 Week Session | 1-5 | 0 or 100 | 3-5 | 2-3 | 1-2 |
| Number of Repeat 2 Week Sampling Sessions at Each Sampling Site | Sequential, ~26/yr | 3 | 2 | 2 | 2 |
| Questionnaired | Infiltration Questionnaire | Time Location Diary | |||
| Pollutant Measurements (Method) | |||||
| PM2.5e (Harvard PEM - Gravimetric) | ✓ | ✓ | ✓ | ✓ | |
| Light-Absorbing Carbonee (Harvard PEM - Reflectometry) | ✓ | ✓ | ✓ | ✓ | |
| Elementsee (X-ray fluorescence) | ✓ | ✓ | ✓ | ✓ | |
| EC/OCf (IMPROVE, Thermal Optical Reflectance) | ✓ | ✓ | |||
| Specific Organic Compoundsf (Gas chromatography mass spectroscopy) | ✓ | ✓ | |||
| NOx (Ogawa - UV Spectrometry) | ✓ | ✓ | ✓ | ✓ | ✓ |
| NO2 (Ogawa - Ion Chromatography) | ✓ | ✓ | ✓ | ✓ | ✓ |
| SO2 (Ogawa - Ion Chromatography) | ✓ | ✓ | ✓ | ✓ | ✓ |
| O3 (Ogawa - Ion Chromatography) | ✓ | ✓ |
a
All home indoor measurements are concurrent with home outdoor measurements.
b
All personal measurements are concurrent with home outdoor and indoor measurements.
c
PM2.5 is collected with 2 or 3 day consecutive samples which are then composited over the ~2 week period, NOx/NO2 samples are nominally 2 weeks.
d
All participants, including those not selected for home monitoring, complete the full MESA Air questionnaire and the follow-up questionnaire.
e
Measured on PM2.5 Teflon filters.
f
Measured on PM2.5 Quartz fiber filters.