Table 11 Registration of PFOS or perfluorooctane sulfonate (45298-90-6) or perfluorooctane sulfonic acid (1763-23-1) in SciFinder analyzed by related CAS-numbers during the years 2000-2009
Research topic PFOS: ’ as entered’ |  | Research topic PFOS: ‘ as concept’ not ’as entered’ |  |
848 publications | Â | 1247 publications | Â |
CAS-nr | Publications | CAS-nr | Publications |
1763-23-1 (PFOS, acid) | 459 | 335-67-1 (PFOA, acid) | 224 |
335-67-1 (PFOA, acid) | 405 | 45285-51-6 (PFO, ion) | 34 |
45298-90-6 (PFOS, sulfonate) | 197 | 1763-23-1 (PFOS, acid) | 16 |
45285-51-6 (PFO,ion) | 58 | 45298-90-6 (PFOS, sulfonate) | 3 |