Table 6. Total amount of surface PM and in-wax PM accumulated on foliage 5 species with respect to three size fractions. Data are mean ± SD, n = 10 (4 months with 3 replicates in each).
| Species | Month | Total amount of surface PM(μg/cm2) | Total amount in wax PM(μg/cm2) |
| PM10(10-100 μm) | PM2.5(2.5-10μm) | PM0.2(0.2-2.5μm) | PM10(10-100μm) | PM2.5(2.5-10μm) | PM0.2(0.2-2.5μm) |
| Q. myrsinaefolia | May. | 32.10±17.79b | 13.97±9.59b | 5.83±1.87cde | 13.60±2.42ab | 7.67±1.35a | 2.97±0.53cd |
| Aug. | 15.70±4.83def | 6.94±2.45cdef | 6.19±3.72cd | 11.48±2.35bc | 5.63±1.14bc | 3.96±0.90ab |
| Nov. | 29.45±10.24b | 8.38±3.74cde | 6.36±3.90cd | 13.09±4.72ab | 7.70±2.44a | 4.33±0.06ab |
| Jan. | 29.26±5.75b | 15.05±2.75b | 9.18±3.06b | 13.03±3.10ab | 4.96±1.33cd | 3.74±1.50bc |
| Q. glauca | May. | 25.61±5.72bc | 11.30±3.08bcd | 3.27±0.13fgh | 8.36±0.34d | 4.72±0.19cde | 1.82±0.08ef |
| Aug. | 8.37±2.17fgh | 4.21±1.05ef | 2.68±1.27ghi | 7.14±2.18de | 3.71±0.88def | 2.70±0.78de |
| Nov. | 19.44±4.84cd | 4.78±1.02ef | 3.58±1.19fgh | 14.03±2.74ab | 7.17±0.96a | 2.72±1.09de |
| Jan. | 17.20±3.17de | 8.46±2.08cde | 4.02±0.96efg | 8.75±1.89cd | 3.14±0.93fgh | 1.96±1.02ef |
| Q. salicina | May. | 31.63±9.22b | 14.61±5.25b | 8.49±1.87b | 12.25±1.93ab | 7.16±1.23a | 2.76±0.48de |
| Aug. | 13.77±3.10def | 6.56±1.39cdef | 4.82±1.54def | 11.37±5.62bc | 5.52±2.85bc | 3.99±1.46ab |
| Nov. | 33.46±7.39b | 11.61±4.12bc | 7.84±2.44bc | 14.85±4.55a | 6.96±2.28ab | 4.58±1.18ab |
| Jan. | 47.17±17.61a | 25.19±15.92a | 11.53±3.09a | 14.78±3.62a | 6.98±2.24ab | 4.79±1.05a |
| C. japonica | May. | 13.08±6.37defg | 4.98±2.70ef | 2.40±1.61ghi | 8.34±2.76d | 4.71±1.56cde | 1.81±0.60ef |
| Aug. | 5.21±2.07gh | 1.99±0.90f | 1.40±0.80hi | 5.06±2.90efg | 1.90±0.96ghi | 1.69±0.66e |
| Nov. | 9.50±3.90efgh | 4.16±0.87ef | 1.54±0.76hi | 4.57±2.48efg | 2.26±1.35fghi | 1.17±0.67fg |
| Jan. | 14.86±4.90def | 6.17±2.04def | 3.26±1.08fgh | 3.59±1.41fg | 1.72±0.50hi | 1.91±0.84ef |
| Prunus x yedoensis | May. | 7.46±4.56fgh | 3.19±1.76ef | 1.74±0.84hi | 5.77±0.36def | 3.26±0.21efg | 1.26±0.08fg |
| Aug. | 3.17±1.68h | 1.82±0.86f | 1.01±0.32hi | 2.22±0.91g | 1.07±0.59i | 0.60±0.44g |
| Nov. | nd | nd | nd | nd | nd | nd |
| Jan. | nd | nd | nd | nd | nd | nd |
| Species(S) | | *** | *** | *** | *** | *** | *** |
| Month(M) | | *** | *** | *** | *** | *** | *** |
| S×M | | *** | *** | *** | *** | *** | *** |