与中国相关的细颗粒的排放和捕获特性
Wenhua Chen1, Yaxuan Xiao1, Junjie Liu2
1School of Infrastructure Engineering, Nanchang University, Nanchang, China.
Environmental science and pollution research international
|October 17, 2023
概括
中国的会释放细颗粒物,影响室内空气质量. 这项研究调查了各种方法的PM1和细颗粒排放,揭示了颗粒生成和捕获效率的差异.
科学领域:
- 环境科学 环境科学
- 室内空气质量 室内空气质量
- 气溶科学 气溶科学
背景情况:
- 是室内空气污染物的重要来源,特别是细颗粒.
- 以前的研究集中在中国中的超细颗粒 (UFP) 和PM2.5,对细颗粒大小分布的关注较少.
- 了解细颗粒的特性至关重要,因为它们主导着中国排放中的质量尺寸分布.
研究的目的:
- 为了确定来自三种中国方法的PM1和细颗粒的排放特性.
- 用修改的间接方法测量颗粒捕获效率,考虑颗粒衰变.
- 调查方法和颗粒大小对排放特征和捕获效率的影响.
主要方法:
- 分析炸,炸和炸的中国菜的PM1和细颗粒物排放量.
- 使用修改的间接方法测量颗粒捕获效率.
- 粒子大小分布 (0.542-10μm) 和衰变速率的表征.
主要成果:
- 炸的蔬菜和炸的肉类产生了更多的微粒 (0.542-1.5微米).
- 油炸和油炸的肉类菜产生了更高的PM1.
- 颗粒的衰变随着颗粒直径的增加而增加,对2-3μm颗粒的捕获效率产生约5%的影响.
- 对于PM1和0.542-5μm颗粒的捕获效率在推的排气流量下在60-90%之间.
结论:
- 方法会影响细颗粒和PM1的产生,而肉类菜往往会产生更多.
- 粒子衰变是捕获效率的一个重要因素,特别是对于较大的微粒.
- 虽然方法影响颗粒的产生,但它们对细颗粒的总体体积频率 (0.542-10μm) 的敏感性较小.
- 通过适当的排气系统,可以有效捕获与有关的细颗粒.
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