Table 3.
Lists some of the main heavy metals discovered in the DPF leachate (250 mL). Face masks 7a, b, c appears to have the highest release of Sb, whilst Cu is released from all masks.
| Sample | Cd (µg/L) | Co (µg/L) | Cu (µg/L) | Pb (µg/L) | Sb (µg/L) | Ti (µg/L) |
|---|---|---|---|---|---|---|
| Procedural Blank | N.D* | N.D | N.D | N.D | N.D | N.D |
| Face mask 2 (Leachate) | N.D | N.D | 4.17 | 0.01 | 1.06 | 0.64 |
| Face mask 4 (Leachate) | 0.01 | 0.54 | 1.87 | 0.62 | N.D | 0.27 |
| Face mask 4 (Leachate) repeat | 0.04 | 0.59 | 1.22 | 0.89 | N.D | N.D |
| Face mask 5 (Leachate) | N.D | N.D | 0.85 | 0.75 | 3.07 | N.D |
| Face mask 6 (Leachate) | 1.92 | N.D | 1.80 | 6.79 | N.D | N.D |
| Face mask 7 a (Leachate) | 0.53 | N.D | 2.06 | 1.62 | 111 | N.D |
| Face mask 7 b (Leachate) | N.D | N.D | 2.31 | N.D | 393 | 0.12 |
| Face mask 7 c (Leachate) | N.D | N.D | 4.00 | N.D | 147 | 0.06 |
* Not Detected.