Table 2.
Concentration ranges and median (ng/g) of phthalate diesters and non-phthalate plasticizers stratified based on country of origin and fabric types of facemasks
| Phthalaites | Adipates | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Country of origin | Contenta | DMP | DEP | DiBP | DBP | DnHP | DEHP | DnOP | BBzP | DEA | DBA | DiBA | DEHA | DBS |
| Canada (n = 12) | Melt-blown PP | <LOD | 57–86 (75) | 403–1230 (844) | 668–1750 (1080) | <LOD | 179–472 (283) | <LOD | 124–1500 (1190) | <LOD | <LOD–820 (383) | <LOD–27 (16) | <LOD–1050 (529) | <LOD–5980 (3490) |
| USA (n = 16) | PP, nylon, PE, PET, Spandex | <LOD–194 (91) | <LOD–1530 (282) | 48–810 (245) | 36–956 (337) | 25–59 (39) | 168–549 (310) | <LOD–1660 (976) | <LOD–−600 (109) | <LOD | <LOD–1892 (297) | <LOD–20 (14) | <LOD–873 (395) | <LOD–7870 (3480) |
| China (n = 29) | Fabric cotton, PP | <LOD–398 (99) | <LOD–2340 (309) | 99–2530 (217) | 26–2160 (358) | <LOD–232 (53) | 49–2720 (821) | <LOD–795 (78) | <LOD–5500 (351) | <LOD–288 (191) | <LOD–769 (520) | <LOD–51 (17) | <LOD–5660 (620) | 1260–7980 (4680) |
| Other countries (n = 9) | Cotton with PP fiber | <LOD | <LOD–150 (59) | 42–691 (158) | 123–674 (234) | <LOD | 146–7670 (846) | <LOD–239 (151) | <LOD–2240 (132) | <LOD | <LOD–670 (538) | <LOD–6 | <LOD–−642 (57) | 45–4060 (1860) |
ND, not detected; <LOD, less than limit of detection; PP, polypropylene; PE, polyethylene; PET, polyethylene terephthalate. Values are listed as range (median).
a
Common material types. DCHP and TBP were not detected in any sample.