Table 2.
Mean of antioxidant consumption (%) during 4 h incubation of PM2.5, PM10, and TSP
| PM Type | %OPAA
|
%OPUA
|
%OPGSH
|
||||
|---|---|---|---|---|---|---|---|
| x | ±SD | x | ±SD | x | ±SD | ||
| PM2.5 | Indoor | 34.56 | 3.38 | 5.94 | 1.64 | 1.78 | 4.56 |
| Outdoor | 32.98 | 2.28 | 8.03 | 2.55 | 3.60 | 1.58 | |
| PM10 | Indoor | 25.00 | 2.57 | 5.22 | 3.40 | 0.20 | 2.52 |
| Outdoor | 27.75 | 0.95 | 7.55 | 3.35 | 5.08 | 3.15 | |
| TSP | Indoor | 32.42 | 1.28 | 4.68 | 3.90 | 0.00 | 3.92 |
| Outdoor | 25.70 | 1.22 | 7.52 | 2.96 | 1.78 | 2.38 | |
| SPablank | 6.90 | 1.40 | 4.60 | 3.50 | 2.30 | 4.00 | |
| LDNb | 57.40 | 1.90 | 3.10 | 5.50 | 31.90 | 0.50 | |
Results are shown for ascorbate oxidation (expressed as OPAA), glutathione oxidation (expressed as OPGSH), and urate oxidation (expressed as OPUA)
a
Filter blank
b
London roadside PM Control