查看文章

Microplastics in the air have gradually attracted our attention in recent years; however, temporal and spatial trends of microplastics in indoor air are rarely discussed. In the present study, we tracked microplastic fallout in a dormitory, an office, and a corridor on both workdays and weekends for three months. In addition, an air conditioner was used to understand airflow influence on microplastic resuspension in the dorm. Among the three sampling sites, the highest average microplastic abundance appeared in the dormitory (9.9 × 10³ MPs/m²/d), followed by the office (1.8 × 10³ MPs/m²/d) and the corridor (1.5 × 10³ MPs/m²/d). In the dormitory, the average MP abundance on weekends (1.4 × 10⁴ MPs/m²/d) was approximately three times of that on weekdays (5.8 × 10³ MPs/m²/d). In the office; however, the abundance on weekends (1.2 × 10³ MPs/m²/d) was 50% of that on weekdays (2.4 × 10³ MPs/m²/d …