Road dust is a demonstrated source of urban air pollution. Given this, the implementation of street sweeping strategies that effectively limit road dust accumulation and resuspension should be a public health priority. Research examining the effectiveness of street sweeping for road dust removal in support of good air quality has been limited to date. To address this, the study aimed to assess the use of a regenerative-air street sweeper to efficiently remove road dust particles and metal(loid)s in size fractions relevant for respiratory exposure in Toronto, Canada. As part of this, the mass amounts, particle size distribution and elemental concentrations of bulk road dust before and after sweeping at five arterial sites were characterized.

中文翻译：

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检查市政街道清扫在清除道路沉积颗粒和影响呼吸道健康的金属（类物质）方面的有效性


道路灰尘是城市空气污染的一个明显来源。鉴于此，实施有效限制道路灰尘积累和再悬浮的街道清扫策略应成为公共卫生优先事项。迄今为止，有关街道清扫对道路除尘以支持良好空气质量的有效性的研究还很有限。为了解决这个问题，该研究旨在评估使用再生空气街道清扫机来有效清除加拿大多伦多与呼吸道暴露相关的道路灰尘颗粒和金属（类）颗粒。作为其中的一部分，对五个主干道地点清扫前后散装道路灰尘的质量、粒径分布和元素浓度进行了表征。