Table 1.
Instrumentation used during environmental monitoring.
| Parameter | Equipment | Averaging time |
|---|---|---|
| TAPL | ||
| UFPa | TSI CPC, Model 3775 | 1 s |
| PM2.5 | TSI Sidepak, Model AM510 | 10 s |
| Particle size distribution | TSI SMPS, Model 3936L75 | 120 s |
| NO/NOx | ThermoElectron, chemiluminescence analyzer, Model 42i | 20 s |
| CO | ThermoElectron gas filter correlation analyzer, Model 48i-TLE | 10 s |
| pPAH | Ecochem PAS, Model 2000CE | 8 s |
| BC | Magee Scientific Aethalometer, Model AE-16 | 60 s |
| Fixed site (Somerville) | ||
| UFPa | TSI CPC, Model 3781 | 60 s |
| pPAH | Ecochem PAS, Model 2000CE Ecochem PAS, Model 2000 |
120 s |
| Meteorology | Vantage Pro2 | 5 min |
a
PNC is measured as the proxy for UFPs.