Size-resolved source apportionment of ambient particles by positive matrix factorization
Size-resolved source apportionment of ambient particles by positive matrix factorization
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DOI：
10.5194/acpd-5-5223-2005
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发表时间：
2005-07
影响因子：
6.3
通讯作者：
J. Han;K. Moon;S. J. Lee;Y. J. Kim;S. Ryu;S. S. Cliff-S.;S. Yi
中科院分区：
文献类型：
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作者：
J. Han;K. Moon;S. J. Lee;Y. J. Kim;S. Ryu;S. S. Cliff-S.;S. Yi
2002年3月29日至5月29日在韩国济州岛高山用一个八级滚筒采样器采集了大小和时间分辨的气溶胶样品，这是东亚具有代表性的本底地点之一。用同步加速器X射线荧光分析了S、硅、铝、铁、钙、氯、铜、锌、钛、钾、锰、铅、镍、钒、硒、砷、Rb、铬、溴等19种元素的3h平均浓度。然后使用正矩阵分解(PMF)技术对尺寸分辨的数据集进行分析，以确定可能的来源并估计其对颗粒物质量的贡献。PMF分析使用测量数据的不确定度来提供最佳权重。15个污染源被分解成8个粒度范围(0.07~12µm)，包括中国气溶胶、土壤粉尘、海盐、生物质燃烧、燃煤、石油加热炉、燃油锅炉、城市焚烧、有色金属源、黑色金属源、汽油车、柴油车、铜冶炼厂和火山排放。PMF分析表明，以土壤沙尘、海盐和中国气溶胶为代表的自然源对粗粒级(1.15~12µm)一次颗粒物质量的贡献率约为79%。另一方面，煤燃烧和生物质燃烧等人为来源在细颗粒(0.56~2.5µm)范围内的贡献率约为60%。柴油车源对超细颗粒物(0.07~0.56µm)的贡献最大，约占一次颗粒物质量的52%。
Size- and time-resolved aerosol samples were collected using an eight-stage DRUM sampler from 29 March to 29 May in 2002 at Gosan, Jeju Island, Korea, which is one of the representative background sites in East Asia. These samples were analyzed using synchrotron X-ray fluorescence for 3-h average concentrations of 19 elements consisting of S, Si, Al, Fe, Ca, Cl, Cu, Zn, Ti, K, Mn, Pb, Ni, V, Se, As, Rb, Cr, Br. The size-resolved data sets were then analyzed using the positive matrix factorization (PMF) technique in order to identify possible sources and estimate their contribution to particulate matter mass. PMF analysis uses the uncertainty of the measured data to provide an optimal weighting. Fifteen sources were resolved in eight size ranges (0.07?12 µm) and included Chinese aerosol, soil dust, sea salt, biomass burning, coal combustion, oil heating furnace, residual oil-fired boiler, municipal incineration, nonferrous metal source, ferrous metal source, gasoline vehicle, diesel vehicle, copper smelter, and volcano emission. PMF analysis of size-resolved source contributions showed that natural sources represented by soil dust, sea salt and Chinese aerosol contributed about 79% to the predicted primary PM mass in the coarse size range (1.15?12 µm). On the other hand, anthropogenic sources such as coal combustion and biomass burning contributed about 60% in the fine size range (0.56?2.5 µm). The diesel vehicle source contributed the most in the ultra-fine size range (0.07?0.56 µm) and was responsible for about 52% of the primary PM mass.