Table 2.
Most used keywords between 1992 and 2018 retrieved from journals list in the WoS database analysing “PBDEs”.
| Rank | NAK (DE) | NA (% of 1482) | NKP | Articles (% of 1482) |
|---|---|---|---|---|
| 1 | Polybrominated diphenyl ethers | 369 (24.90) | Brominated flame retardants | 841 (56.75) |
| 2 | PBDEs | 268 (18.08) | Polychlorinated-biphenyls | 438 (29.55) |
| 3 | Polybrominated diphenyl ethers (PBDEs) | 116 (7.83) | PBDEs | 432 (29.15) |
| 4 | PBDE | 95 (6.41) | Exposure | 237 (15.99) |
| 5 | Brominated flame retardants | 70 (4.72) | Environment | 233 (15.72) |
| 6 | Flame retardants | 55 (3.71) | Decabromodiphenyl ether | 175 (11.81) |
| 7 | PCBs | 53 (3.58) | Flame retardants | 159 (10.73) |
| 8 | Sediment | 50 (3.37) | Persistent organic pollutants | 145 (9.78) |
| 9 | Fish | 48 (3.24) | Human exposure | 140 (9.45) |
| 10 | Polychlorinated biphenyls | 44 (2.97) | South china | 136 (9.18) |
| 11 | Exposure | 41 (2.77) | Breast-milk | 134 (9.04) |
| 12 | Polybrominated diphenyl ether | 40 (2.70) | Polychlorinated-biphenyls PCBs | 120 (8.10) |
| 13 | Bioaccumulation | 38 (2.56) | Dibenzo-p-dioxins | 116 (7.83) |
| 14 | Human exposure | 36 (2.43) | Fish | 113 (7.62) |
| 15 | Soil | 36 (2.43) | Organochlorine pesticides | 108 (7.29) |
| 16 | Breast milk | 33 (2.23) | Great-lakes | 104 (7.02) |
| 17 | China | 30 (2.02) | Pollutants | 98 (6.61) |
| 18 | Persistent organic pollutants | 30 (2.02) | Samples | 98 (6.61) |
| 19 | E-waste | 29 (1.96) | PCBs | 95 (6.41) |
| 20 | Dust | 27 (1.82) | China | 92 (6.21) |
NAK number of author's keywords, NA number of articles, NKP number of keywords-plus.