含重金属Cu元素模拟尘源气溶胶的试验研究

发布时间：2018-06-26 23:03

本文选题：重金属元素 + 人工尘气溶胶　；参考：《环境污染与防治》2016年11期

【摘要】：重金属元素易富集于大气颗粒物中且会对人体造成较大危害,为进一步提高高效空气过滤器性能,有针对性地去除含重金属元素的颗粒物,提出了有关过滤器测试标准要求外的新的人工尘源气溶胶发生溶液CuSO4,并从相关性、粒谱分布、分散度等方面对其能否满足测试气溶胶的要求进行验证分析。结果表明:(1)CuSO4和KCl间的相关系数(R2)为0.991 52,相关性很好;NaCl、KCl和CuSO4气溶胶的几何标准差分别为0.88、0.85、0.81,呈单分散且分散程度接近,可很好地满足测试气溶胶要求。(2)随发生溶液浓度的增加,气溶胶峰值粒径增大,导致分散度增加;随喷气压的增加,气溶胶峰值粒径减小,分布趋于集中。发生溶液浓度和喷气压对CuSO4和KCl气溶胶峰值粒径、粒子数浓度和分散度作用规律的一致性进一步证明了CuSO4气溶胶作为测试气溶胶的可行性。
[Abstract]:Heavy metal elements are easily enriched in atmospheric particulates and will cause great harm to human body. In order to further improve the performance of high efficiency air filter, the particles containing heavy metal elements are removed pertinently. A new aerosol generation solution CuSO4 for artificial dust source is proposed in this paper, which is not required by the filter test standard, and it is verified that CuSO4 can meet the requirements of aerosol test from the aspects of correlation, particle spectrum distribution and dispersion. The results show that: (1) the correlation coefficient (R2) between CuSO4 and KCl is 0.991, and the geometric standard deviation of NaCl-KCl and CuSO4 aerosols is 0.88-0.850.81, respectively. The peak particle size of aerosol decreases and the distribution tends to be concentrated with the increase of air pressure. The consistency of solution concentration and air pressure on the action of CuSO4 and KCl aerosols on the peak particle size, particle number concentration and dispersion further proves the feasibility of CuSO4 aerosol as a test aerosol.
【作者单位】：北京化工大学理学院;中国建筑科学研究院建筑安全与环境国家重点实验室;建研科技股份有限公司;
【基金】：国家“十二五”科技支撑项目(No.2013BAK12B03)
【分类号】：X513

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