Table 1.
The aerosol total Fe (FeT) concentration and Fe solubility (%FeS) in this study and in other regions under different circumstances reported by previous papers.
| Location | Site type | Sample type | Period (weather condition) | FeT (ng m−3) | %FeS (%) | Reference |
|---|---|---|---|---|---|---|
| Hangzhou | Urban | PM2.5 | Pre-lockdown (haze) | 345 | 4.2 | This study |
| PM2.5 | COVID-19 lockdown (clear) | 75 | 7.8 | This study | ||
| PM2.5 | Post-lockdown (clear) | 343 | 1.4 | This study | ||
| Beijing | Urban | PM2.5 | Winter (haze) | 1490 | 5.0 | Zhu et al. (2020) |
| Handan | Urban | PM2.5 | Winter (haze) | 1310 | 4.5 | Zhu et al. (2020) |
| Zhengzhou | Urban | PM2.5 | Winter (haze) | 1132 | 2.7 | Zhu et al. (2020) |
| Hangzhou | Urban | PM2.5 | Winter (haze) | 869 | 3.0 | Zhu et al. (2020) |
| Qingdao | Coastal | TSP | Winter and Spring (clear) | 3180 | 1.1 | Shi et al. (2020) |
| TSP | Winter and Spring (fog) | 2720 | 5.8 | Shi et al. (2020) | ||
| TSP | Winter and Spring (dust) | 15,000 | 0.3 | Shi et al. (2020) | ||
| TSP | Winter and Spring (haze) | 5130 | 1.7 | Shi et al. (2020) | ||
| East China Sea | Ocean | TSP | Winter and Spring (dust) | 2224 | 1.5 | Hsu et al. (2010) |
| TSP | Winter and Spring (non-dust) | 268 | 7.7 | Hsu et al. (2010) | ||
| TSP | Summer (non-dust) | 187 | 11.5 | Hsu et al. (2010) | ||
| Mt. Abu (Western India) | Mountain | PM2.5 | Summer (dust) | 161–915 | 1.6 | Kumar and Sarin (2010) |
| PM2.5 | Winter (haze) | 50–397 | 8.1 | Kumar and Sarin (2010) |