## 3 Results
### OC Characteristics of PM\({}_{2.5}\) in Orchard Areas
\begin{table}
\begin{tabular}{c c c c c c c c c} \hline \hline
**VOCs (ppb)** & \multicolumn{2}{c}{**Total**} & \multicolumn{2}{c}{**Rain**} & \multicolumn{2}{c}{**Non-Rain**} \\ \hline Benzene & 0.6526 & \(\pm\) & 0.32123 & 0.6199 & \(\pm\) & 0.1949 & 0.6644 & \(\pm\) & 0.3444 \\ Toluene & 5.6176 & \(\pm\) & 1.7919 & 4.2932 & \(\pm\) & 0.4786 & 6.0930 & \(\pm\) & 1.8508 \\ Ethylbenzene & 0.6827 & \(\pm\) & 1.2157 & 0.3658 & \(\pm\) & 0.0959 & 0.7976 & \(\pm\) & 1.4003 \\ m\&p-Xylene & 1.1144 & \(\pm\) & 0.7360 & 0.6785 & \(\pm\) & 0.1364 & 1.2725 & \(\pm\) & 0.7984 \\ A-Xylene & 1.0198 & \(\pm\) & 1.7512 & 0.5381 & \(\pm\) & 0.1193 & 1.1945 & \(\pm\) & 2.0146 \\ Acrylonitrile & 0.1277 & \(\pm\) & 0.1383 & 0.0745 & \(\pm\) & 0.0593 & 0.1470 & \(\pm\) & 0.1529 \\
1,1-Dichloroethane & 0.0144 & \(\pm\) & 0.0481 & 0.0034 & \(\pm\) & 0.0043 & 0.0184 & \(\pm\) & 0.0556 \\ Chloroform & 0.1910 & \(\pm\) & 0.2195 & 0.1355 & \(\pm\) & 0.1268 & 0.2110 & \(\pm\) & 0.2415 \\
1,2-Dichloroethane & 0.1586 & \(\pm\) & 0.1463 & 0.1243 & \(\pm\) & 0.1846 & 0.1711 & \(\pm\) & 0.1273 \\
1,1,1-Trichloroethane & 0.0055 & \(\pm\) & 0.0036 & 0.0042 & \(\pm\) & 0.0022 & 0.0059 & \(\pm\) & 0.0038 \\ Carbon tetrachloride & 0.1704 & \(\pm\) & 0.0565 & 0.1731 & \(\pm\) & 0.0283 & 0.1694 & \(\pm\) & 0.0637 \\ Trichtoethene & 0.0168 & \(\pm\) & 0.0081 & 0.0144 & \(\pm\) & 0.0071 & 0.0177 & \(\pm\) & 0.0083 \\ Tetrachloroethene & 0.0033 & \(\pm\) & 0.0023 & 0.0018 & \(\pm\) & 0.0013 & 0.0039 & \(\pm\) & 0.0023 \\ Chlorobenzene & 0.0065 & \(\pm\) & 0.0070 & 0.0021 & \(\pm\) & 0.0006 & 0.0081 & \(\pm\) & 0.0076 \\ Styrene & 0.1989 & \(\pm\) & 0.2898 & 0.1646 & \(\pm\) & 0.2518 & 0.2113 & \(\pm\) & 0.3014 \\ Bromobenzene & 0.0161 & \(\pm\) & 0.0531 & 0.0087 & \(\pm\) & 0.0126 & 0.0187 & \(\pm\) & 0.0614 \\ Isopropylbenzene & 0.0045 & \(\pm\) & 0.0057 & 0.0026 & \(\pm\) & 0.0010 & 0.0052 & \(\pm\) & 0.0064 \\
2-Chlorotoluene & 0.0332 & \(\pm\) & 0.0972 & 0.0166 & \(\pm\) & 0.0035 & 0.0393 & \(\pm\) & 0.1129 \\ n-Propylbenzene \& 4-Chlorotoluene & 0.0129 & \(\pm\) & 0.0373 & 0.0067 & \(\pm\) & 0.0012 & 0.0151 & \(\pm\) & 0.0433 \\
1,3,5-Trimethylbenzene & 0.0199 & \(\pm\) & 0.0767 & 0.0084 & \(\pm\) & 0.0037 & 0.0241 & \(\pm\) & 0.0892 \\ p-Isopropylbenzene & 0.0185 & \(\pm\) & 0.0527 & 0.0106 & \(\pm\) & 0.0026 & 0.0213 & \(\pm\) & 0.0612 \\
1,2,4-Trimethylbenzene & 0.0932 & \(\pm\) & 0.5391 & 0.0255 & \(\pm\) & 0.0073 & 0.1178 & \(\pm\) & 0.6274 \\
1,2-DiChlorobenzene & 0.0025 & \(\pm\) & 0.0018 & 0.0014 & \(\pm\) & 0.0007 & 0.0030 & \(\pm\) & 0.0019 \\
1,3-DiChlorobenzene & 0.0023 & \(\pm\) & 0.0017 & 0.0012 & \(\pm\) & 0.0004 & 0.0027 & \(\pm\) & 0.0018 \\ sec-Butylbenzene & 0.0012 & \(\pm\) & 0.0029 & 0.0007 & \(\pm\) & 0.0005 & 0.0013 & \(\pm\) & 0.0034 \\ tertt-Butylbenzene & 0.0136 & \(\pm\) & 0.0177 & 0.0073 & \(\pm\) & 0.0033 & 0.0159 & \(\pm\) & 0.0201 \\
1,4-DiChlorobenzene & 0.0019 & \(\pm\) & 0.0023 & 0.0009 & \(\pm\) & 0.0007 & 0.0022 & \(\pm\) & 0.0026 \\ n-Butylbenzene & 0.0157 & \(\pm\) & 0.0435 & 0.0076 & \(\pm\) & 0.0041 & 0.0186 & \(\pm\) & 0.0504 \\ Naphthalene & 0.0184 & \(\pm\) & 0.0138 & 0.0096 & \(\pm\) & 0.0028 & 0.0215 & \(\pm\) & 0.0148 \\
1,2,4-Trichlorobenzene & 0.0001 & \(\pm\) & 0.0001 & 0.0001 & \(\pm\) & 0.0002 & 0.0001 & \(\pm\) & 0.0001 \\ Hexachloro-1,3-butadiene & 0.0009 & \(\pm\) & 0.0018 & 0.0001 & \(\pm\) & 0.0001 & 0.0012 & \(\pm\) & 0.0021 \\ Total VOCs (sum) & 10.2351 & \(\pm\) & 3.5027 & 7.3014 & \(\pm\) & 1.0409 & 11.2938 & \(\pm\) & 3.5566 \\ \hline \hline \end{tabular}
\end{table} 
Table 3: Analysis result of VOCs concentration in the orchard area. In order to confirm the emission characteristics of VOCs that originate in agricultural areas, Figure 6 shows the ratio of m,p-xylene/ethylbenzene (X/E) and toluene/benzene (T/B) that was confirmed. The X/E ratio is used as data that can confirm the photochemical time change after the generation of VOCs.