Size and composition distribution of fine particulate matter emitted from wood burning, meat charbroiling, and cigarettes
Size and composition distribution of fine particulate matter emitted from wood burning, meat charbroiling, and cigarettes
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DOI：
10.1021/es981277q
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发表时间：
1999-10-15
影响因子：
11.4
通讯作者：
Cass, GR
中科院分区：
文献类型：
--
作者：
Kleeman, MJ;Schauer, JJ;Cass, GR
增加了稀释源采样系统，以测量空气污染源排放的细颗粒的大小分布的化学成分。测量使用激光光学粒子计数器（OPC），微分迁移率分析仪/冷凝核计数器（DMA/CNC）组合和一对微孔均匀沉积冲击器（MOUDIs）进行。用这个系统测试的来源包括木材烟雾（松树、橡树、桉树）、肉炭烤和香烟。来自所有木材烟雾源的颗粒质量分布具有单模态，其峰值约为0.1-0.2 μ m颗粒直径。肉炭烤产生的烟雾在0.1 ~ 0.2 μ m颗粒直径处的颗粒质量分布有一个主要的峰值，一些物质的颗粒尺寸更大。香烟的颗粒质量分布在0.3和0.4 μ m颗粒直径之间达到峰值。化学成分分析表明，从这里测试的来源排放的颗粒主要由有机化合物组成。在木材燃烧释放的颗粒中发现了明显的元素碳浓度。本文还介绍了这些源的痕量物质排放的大小分布，包括Na、K、Ti、Fe、Pr、Ru、CI、Al、Zn、Ba、Sr、V、Mn、Sb、La、Ce以及硫酸盐、硝酸盐和铵离子的数据。这些数据旨在用于空气质量模型，以预测大气细颗粒化学成分的大小分布。
A dilution source sampling system is augmented to measure the size-distributed chemical composition of fine particle emissions from air pollution sources. Measurements are made using a laser optical particle counter (OPC), a differential mobility analyzer/condensation nucleus counter (DMA/CNC) combination, and a pair of microorifice uniform deposit impactors (MOUDIs). The sources tested with this system include wood smoke (pine, oak, eucalyptus), meat charbroiling, and cigarettes. The particle mass distributions from all wood smoke sources have a single mode that peaks at approximately 0.1-0.2 mu m particle diameter. The smoke from meat charbroiling shows a major peak in the particle mass distribution at 0.1-0.2 mu m particle diameter, with some material present at larger particle sizes. Particle mass distributions from cigarettes peak between 0.3 and 0.4 mu m particle diameter. Chemical composition analysis reveals that particles emitted from the sources tested here are largely composed of organic compounds. Noticeable concentrations of elemental carbon are found in the particles emitted from wood burning. The size distributions of the trace species emissions from these sources also are presented, including data for Na, K, Ti, Fe, Pr, Ru, CI, Al, Zn, Ba, Sr, V, Mn, Sb, La, Ce, as well as sulfate, nitrate, and ammonium ion when present in statistically significant amounts. These data are intended for use with air quality models that seek to predict the size distribution of the chemical composition of atmospheric fine particles.