Fig. 1.
Fig. 2.
Fig. 3.
Fig. 4.
Fig. 5.
Basic information of particulate protective masks
| Country | Standard number | Standard name | Mask type |
|---|---|---|---|
| China | GB 2626-2019 | Respiratory protection - Non-powered air-purifying particle respirator | KN95 |
| USA | 42 CFR Part 84 | NIOSH guide to the selection and use of particulate respirators | N95 |
| Europe | EN 149: 2001 + A1: 2009 | Respiratory protective devices - Filtering half masks to protect against particles - Requirements, testing, marking | FFP2 |
Source for GHG emissions factors
| Category | GHG emission source | Source |
|---|---|---|
| Material | Polypropylene | CNTAC-LCAPlus |
| Electret masterbatch | Luo et al. [22] | |
| Polyurethane/Polyester blends ear loop | Shao et al. [23] | |
| Iron wire | Yang [24] | |
| Polyester | CNTAC-LCAPlus | |
| Polyethylene | CNTAC-LCAPlus | |
| Cotton yarn | CNTAC-LCAPlus | |
| Activated carbon | Vilén [25] | |
| Polyurethane | CNTAC-LCAPlus | |
| Silicone rubber | Xin et al. [26] | |
| Polypropylene film | CNTAC-LCAPlus | |
| Polyethylene film | CNTAC-LCAPlus | |
| Corrugating medium | Zhao et al. [27] | |
| Energy | Diesel | CNTAC-LCAPlus |
| Electricity | China Regional Power Grids Carbon Dioxide Emission Factors |