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| 硫酸铵作为人工气溶胶模拟尘源的研究 | |
| 引用本文： | 邓高峰, 李增和, 胡露露, 王智超, 郜津慧. 硫酸铵作为人工气溶胶模拟尘源的研究[J]. 环境工程学报, 2017, 11(2): 977-982. doi: 10.12030/j.cjee.201509193 |
| 作者姓名： | 邓高峰 李增和 胡露露 王智超 郜津慧 |
| 作者单位： | 1. 北京化工大学理学院, 北京 100029; 2. 中国建筑科学研究院建筑环境与安全国家重点实验室, 北京 100013; 3. 建研科技股份有限公司, 北京 100013 |
| 基金项目： | 国家科技支撑计划项目（2013BAK12B03） |
| 摘 要： | 硫酸盐、铵盐等水溶性无机盐粒子是大气气溶胶的重要组成部分，为进一步提高高效过滤器性能测试实验的精度，提出了过滤器测试标准要求外的新的人工尘气溶胶发生液（NH4）2SO4，并通过一系列实验，从相关性、粒谱分布、分散度等方面对其气溶胶粒子能否满足测试气溶胶的要求进行验证分析。实验结果表明，（NH4）2SO4和KCl间的相关系数R2为0.994 78，相关性很好；NaCl、KCl和（NH4）2SO4气溶胶的几何标准差分别为0.88、0.85和0.87，呈单分散且分散程度接近，可很好的满足测试气溶胶要求。还获得了可控参数喷气压力与发生溶液质量浓度对（NH4）2SO4气溶胶粒谱分布的影响规律：随喷气压力的增加，气溶胶粒子的粒径减小，分布集中；而随发生溶液质量浓度的增加，粒径增大，导致分散度增加。质量浓度和喷气压力对（NH4）2SO4和KCl气溶胶粒径和分散度作用规律的一致性进一步表明（NH4）2SO4作为测试气溶胶的可行性。 |
| 关 键 词： | 人工尘气溶胶 粒谱分布 相关性 几何标准差 |
| 收稿时间： | 2015-11-03 |
Research on ammonium sulfate as artificial aerosol simulated dust source |
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| DENG Gaofeng, LI Zenghe, HU Lulu, WANG Zhichao, GAO Jinhui. Research on ammonium sulfate as artificial aerosol simulated dust source[J]. Chinese Journal of Environmental Engineering, 2017, 11(2): 977-982. doi: 10.12030/j.cjee.201509193 | |
| Authors: | DENG Gaofeng LI Zenghe HU Lulu WANG Zhichao GAO Jinhui |
| Affiliation: | 1. College of Science, Beijing University of Chemical Technology, Beijing 100029, China; 2. State Key Laboratory of Building Safety and Built Environment, China Academy of Building Research, Beijing 100013, China; 3. Cabr Technology Co. Ltd., Beijing 100013, China |
| Abstract: | Water-soluble inorganic salt particles, such as sulfate and ammonium salts, are important components of atmospheric aerosol. To improve the accuracy of high-efficiency filter performance tests, a new dust aerosol-generating solution, (NH4)2SO4, is proposed. This solution is different from the test aerosols used in the filter test standards. To verify its ability to meet the requirements of test aerosols, a series of experiments was conducted to evaluate the correlation, particle distribution, and dispersion. The experimental results show that the correlation coefficient R2 between (NH4)2SO4 and KCl is 0.994 78, indicating good correlation. The geometric standard deviations of NaCl, KCl, and (NH4)2SO4 are 0.87, 0.85, and 0.88, respectively, which are all correspond to single dispersion. The variation trend of the new dust aerosol (NH4)2SO4 is consistent with the standard aerosol and can readily satisfy the requirements of test aerosols. In addition, the influence of the jet pressure and solution concentration, as controllable parameters, on the particle size distribution of aerosol (NH4)2SO4 is also determined. With increasing jet pressure, the particle size decreases, and the size distribution becomes more uniform. Meanwhile, with as the solution concentration increases, the particle size and dispersion degree increase. The consistency of the influence of the solution concentration and injection pressure on the particle size and dispersion degree between (NH4)2SO4 and KCl shows that (NH4)2SO4 is a feasible test aerosol. |
| Keywords: | artificial dust aerosol particle size distribution correlation geometric standard deviation |
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