The comparison results of PM concentration from nanosampler was compared with an eight-stage
cascade impactor taper element oscillating microbalance (TEOM) and beta ray type at the air quality monitoring
station as shown in Table 3. In Dindaeng station, collected PM10 by Nanoparticle was compared with automatic
PM10 sampler (TEOM) from PCD air quality monitoring station while in Bansomdej Chaopraya station,
collected PM10 by Nanoparticle was compared with automatic PM10 sampler (beta ray type) as the total particle
from Nanoparticle assumed TSP were compared with high volume sampler from PCD air quality monitoring
station in that area. In Chulalongkorn station, collected PM1, PM2.5 and PM10 by Nanoparticle were compared
with a cascade impactor while the total particle from Nanoparticle assumed TSP were compared with high
volume sampler (TSP of nanosampler is the total concentrations in all stages of sampler and NA is not
applicable).
The comparison in Table 3 showed that PM concentrations measured by nanosampler were close to
other samplers. PM10 by Nanosampler were slightly lower than PM10 by other samplers in every sampling site as
well as TSP concentration. Coefficient correlation (R2) in Table 4 ranged from 0.66 to 0.91 indicates that
nanosampler is enough accurate for sampling instead of other samplers.