关键词: 杏, 总悬浮物, 颗粒物, 吸滞能力

Abstract: [Objective] Two apricot of economic forest trees in Beijing was used as research materials in this study. The particulate matter adsorption capacity of economic forest trees were quantitatively analysed. [Method] Taking different apricot leaves as materials, aerosol generator(QRJZFSQ-I) was used to measure their particulate matter adsorption(PM1.0, PM2.5, PM10, TSP) capacity. [Results] Individual leaf area adsorption capacity of PM1.0, PM2.5, PM10 and TSP was different between two apricots. Individual leaf area particulate adhesion capacity of Chuan ZhiHong P. armeniaca of PM1.0, PM2.5, PM10 and TSP were 1.57, 1.72, 1.80 and 2.54 times than Long WangMao P. armeniaca respectively. Individual leaf area adsorption PM1.0, PM2.5, PM10 and TSP capacity of two apricots was the strongest in October. Chuan ZhiHong P. armeniaca were(0.87±0.09) μg/cm²,(2.02±0.008) μg/cm²,(3.90±0.07) μg/cm² and(4.87±0.05) μg/cm, respectively. Long WangMao P. armeniaca were(0.56±0.09) μg/cm²,(1.14±0.12) μg/cm²,(2.52±0.05) μg/cm² and(2.58±0.008) μg/cm², respectively. Individual leaf area of adsorption amount of PM1.0, PM2.5, PM10, and TSP were relatively low in may and July. Individual leaf area of adsorption of PM10 and TSP, PM2.5 and PM10, PM2.5 and PM1.0. There was a significant correlation between Chuan ZhiHong and Long WangMao P. armeniaca. Correlation coefficient of Chuan ZhiHong P. branches 0.978 2, 0.969 8, respectively and 0.998 3 and Long WangMao P. armeniaca are 0.998 8, 0.984 6 and 0.995 3, respectively. [Conclusion] Particulate matter adsorption capacity of two apricots are different. The variation trend of different diameter particles are consistent. Particulate matter adsorption capacity of Chuan ZhiHong P. armeniaca is better than that of Long WangMao P. armeniaca. Therefore, economic forest trees can not only provide fruits but also play an important ecological function.

Key words: apricot, total suspended particulate, particulate matter, adsorption capacity