Our performed measurement on the air particulate matters level during 2011winter in Cluj – Napoca, on the Dambovitei Street air quality monitoring platform, shows significant values around of 4 g/m²/month. The PM₁₀ (Particulate Matters) fraction feature the average diameter of 9 μm and the PM_2.5 fraction feature an average diameter of 2μm. The performed mineralogical and crystallographic investigations shows large amount of quartz 50%, kaolinite 25%, lepidocrocite 20% and tridimite 5% in the collected PM. The tridimite and lepidocrocite is quite unusual for naturally formed PM. The enhanced analysis over the possible anthropogenic PM sources reveals the source of lepidocrocite and tridimite in the used nonskid material, via street dust. We found over 30 % ferro hydroxide in nonskid material. The respiratory test reveals that such PM interact with the nose mucosa presenting a potential health risk. We developed some magnetic separation strategy in order to diminish the iron hydroxides occurrence in nonskid material. We achieve a good extraction coefficient of ferro hydroxide particles around 23%. This result proves to be useful for developing of an ecological management of streets maintenances during winter.