# Size-Segregated Particulate Mass and Carbonaceous Components in Roadside and Riverside Environments
## 3 Results and Discussion
### Contribution of Local Emission Sources
#### 3.2.2 Behavior of Carbonaceous Components in Size-Fractionated Particles
\begin{table}
\begin{tabular}{c c c c c c c c c c} \hline \hline
**Sampling** & **OC** & **EC** & **TC** & **OC/EC** & **Char-EC** & **Soot-EC** & **Soot-EC** & **Char/Soot-PM** & **CC** & **TC/PM** \\
**Site** & **(\#g/m3)** & **(\#g/m3)** & **(\#g/m3)** & **(\#g/m3)** & **(\#g/m3)** & **(\#g/m3)** & **(\(\leftarrow\))** & **(\(\leftarrow\))** & **(\(\leftarrow\))** \\ \hline \multicolumn{10}{c}{\(<\)0.1 μm} \\  & & & & \multicolumn{4}{c}{Diurnal (D) and nocturnal (N)} \\ \hline RSD & 4.71 & 1.56 & 6.25 & 3.27 & 0.49 & 1.04 & 0.08 & 0.48 & 0.45 \\ \(\pm\)0.83 & \(\pm\)0.35 & \(\pm\)0.82 & \(\pm\)1.15 & \(\pm\)0.27 & \(\pm\)0.17 & \(\pm\)0.02 & \(\pm\)0.25 & \(\pm\)0.07 \\  & 4.64 & 1.90 & 6.54 & 2.43 & 0.74\(\pm\) & 1.16 & 0.05 & 0.65 & 0.26 \\  & \(\pm\)1.31 & \(\pm\)0.34 & \(\pm\)1.58 & \(\pm\)0.47 & 0.21 & \(\pm\)0.23 & \(\pm\)0.01 & \(\pm\)0.20 & \(\pm\)0.05 \\  & 3.61 & 1.31 & 4.91 & 2.81 & 0.62 & 0.69 & 0.07 & 0.90 & 0.51 \\  & \(\pm\)0.34 & \(\pm\)0.20 & \(\pm\)0.48 & \(\pm\)0.41 & \(\pm\)0.11 & \(\pm\)0.01 & \(\pm\)0.03 & \(\pm\)0.10 & \(\pm\)0.20 \\  & 6.41 & 1.90 & 8.31 & 3.32 & 0.77 & 1.13 & 0.08 & 0.71 & 0.54 \\  & \(\pm\)2.10 & \(\pm\)0.24 & \(\pm\)2.30 & \(\pm\)0.74 & \(\pm\)0.09 & \(\pm\)0.24 & \(\pm\)0.01 & \(\pm\)0.17 & \(\pm\)0.04 \\ \hline \multicolumn{10}{c}{Daily} \\ \hline RS & 4.68 & 1.72 & 6.39 & 2.85 & 0.62 & 1.10 & 0.06 & 0.56 & 0.36 \\  & \(\pm\)1.07 & \(\pm\)0.34 & \(\pm\)1.20 & \(\pm\)0.81 & \(\pm\)0.24 & \(\pm\)0.20 & \(\pm\)0.02 & \(\pm\)0.23 & \(\pm\)0.06 \\  & 5.01 & 1.60 & 6.61 & 3.06 & 0.70 & 0.91 & 0.07 & 0.81 & 0.53 \\  & \(\pm\)1.22 & \(\pm\)0.22 & \(\pm\)1.39 & \(\pm\)0.57 & \(\pm\)0.10 & \(\pm\)0.17 & \(\pm\)0.01 & \(\pm\)0.14 & \(\pm\)0.12 \\ \hline \multicolumn{10}{c}{0.5–1 μm} \\ \hline \multicolumn{10}{c}{Diurnal (D) and nocturnal (N)} \\ \hline RSD & 4.56 & 2.82 & 7.38 & 1.90 & 2.03 & 0.79 & 0.05 & 2.48 & 0.45 \\  & \(\pm\)1.07 & \(\pm\)1.74 & \(\pm\)2.71 & \(\pm\)0.68 & \(\pm\)1.39 & \(\pm\)0.38 & \(\pm\)0.03 & \(\pm\)0.93 & \(\pm\)0.20 \\  & 8.38 & 1.58 & 9.96 & 5.66 & 0.66 & 1.03 & 0.03 & 0.57 & 0.30 \\  & \(\pm\)2.67 & \(\pm\)0.38 & \(\pm\)2.60 & \(\pm\)2.52 & \(\pm\)0.31 & \(\pm\)0.23 & \(\pm\)0.01 & \(\pm\)0.39 & \(\pm\)0.06 \\  & 6.28 & 1.81 & 8.09 & 5.46 & 0.89 & 0.92 & 0.07 & 1.22 & 0.62 \\  & \(\pm\)4.48 & \(\pm\)1.27 & \(\pm\)4.97 & \(\pm\)4.40 & \(\pm\)1.12 & \(\pm\)0.62 & \(\pm\)0.04 & \(\pm\)1.69 & \(\pm\)0.27 \\  & 8.30 & 0.98 & 9.27 & 7.67 & 0.24 & 0.73 & 0.04 & 0.49 & 0.43 \\  & \(\pm\)3.50 & \(\pm\)0.61 & \(\pm\)3.87 & \(\pm\)2.57 & \(\pm\)0.61 & \(\pm\)0.26 & \(\pm\)0.01 & \(\pm\)1.36 & \(\pm\)0.06 \\ \hline \multicolumn{10}{c}{Daily} \\ \hline RS & 6.47 & 2.20 & 8.67 & 3.78 & 1.35 & 0.91 & 0.04 & 1.52 & 0.37 \\  & \(\pm\)1.87 & \(\pm\)1.06 & \(\pm\)2.66 & \(\pm\)1.60 & \(\pm\)0.85 & \(\pm\)0.30 & \(\pm\)0.02 & \(\pm\)0.66 & \(\pm\)0.13 \\  & 7.29 & 1.39 & 8.68 & 6.57 & 0.57 & 0.83 & 0.05 & 0.86 & 0.52 \\  & \(\pm\)3.99 & \(\pm\)0.94 & \(\pm\)4.42 & \(\pm\)3.48 & \(\pm\)0.87 & \(\pm\)0.44 & \(\pm\)0.02 & \(\pm\)1.52 & \(\pm\)0.17 \\ \hline \multicolumn{10}{c}{1-2.5 μm} \\ \hline RSD & 4.21 & 1.92 & 6.13 & 2.99 & 1.10 & 0.82 & 0.05 & 1.40 & 0.38 \\  & \(\pm\)2.46 & \(\pm\)1.69 & \(\pm\)4.01 & \(\pm\)2.19 & \(\pm\)0.96 & \(\pm\)0.76 & \(\pm\)0.05 & \(\pm\)0.71 & \(\pm\)0.27 \\  & 6.53 & 2.04 & 8.57 & 3.88 & 1.16 & 0.88 & 0.04 & 1.57 & 0.33 \\  &Similar to findings reported in previous studies, the concentration of OC tends to peak at the 0.5-1 \(\upmu\)m or 1-2.5 \(\upmu\)m fraction except for the diurnal period at the RS site [2,3]. This is also clear for the OC/EC ratio, except for the RS site. As seen from Figure 5, such behavior can largely be attributed to larger fractions of pyOC and char-EC at both the RS and RV sites. Since these values and related parameters are generally accepted as indices of biomass burning, carbonaceous characteristics in the size range of 0.5-1 or 1-2.5 \(\upmu\)m, they can be attributed to biomass burning or related emission sources [3,4].