Hwa Mei-Yin, Yu Tai-Yi
Department of Safety, Health and Environmental Engineering, Tungnan University, 152, Sec. 3, Beishen Rd., Shenkeng Dist., New Taipei City, 222, Taiwan,
Environ Monit Assess. 2014 Oct;186(10):6433-43. doi: 10.1007/s10661-014-3865-8. Epub 2014 Jun 18.
This study used a scanning mobility particle sizer (SMPS) to measure and categorize submicron atmospheric particles in the 14-737-nm size range for ambient and urban roadside air and for air in the Hsuehshan Tunnel (12.9 km), Taiwan. Principal component analysis, traffic flow, and particle size distributions were used to identify the emission characteristics of light-duty vehicles (LDV) with the SMPS data. In the Hsuehshan Tunnel, the particle size from the majority of emissions discharged by LDV is approximately 20-60 nm, and the maximum particle number can reach up to 2.5 × 10(5). In contrast, submicron particle size distribution for urban roadsides is mostly 14-200 nm, and the maximum particle number is approximately 4 × 10(4) with the particle number for most particle sizes being below 1,200. The submicron particle size distribution at the ambient air station was unimodal with a mode sizes at 30-50 nm with the maximum particle number of 3,000.
本研究使用扫描迁移率粒径谱仪（SMPS）对台湾雪山隧道（12.9公里）、环境空气和城市路边空气中粒径范围在14 - 737纳米的亚微米大气颗粒物进行测量和分类。利用主成分分析、交通流量和粒径分布，结合SMPS数据来确定轻型车辆（LDV）的排放特征。在雪山隧道中，轻型车辆排放的大部分颗粒物粒径约为20 - 60纳米，最大颗粒数可达2.5×10⁵。相比之下，城市路边的亚微米粒径分布大多在14 - 200纳米，最大颗粒数约为4×10⁴，大多数粒径的颗粒数低于1200。环境空气监测站的亚微米粒径分布呈单峰型，峰值粒径在30 - 50纳米，最大颗粒数为3000。
