Structure refinements of Pb2+ ion-exchanged apatites by x-ray powder pattern-fitting
Miyake, M; Ishigaki, K; Suzuki, T
HERO ID
690099
Reference Type
Journal Article
Year
1986
Language
English
| HERO ID | 690099 |
|---|---|
| In Press | No |
| Year | 1986 |
| Title | Structure refinements of Pb2+ ion-exchanged apatites by x-ray powder pattern-fitting |
| Authors | Miyake, M; Ishigaki, K; Suzuki, T |
| Journal | Journal of Solid State Chemistry |
| Volume | 61 |
| Issue | 2 |
| Page Numbers | 230-235 |
| Abstract | The crystal structures of Pb2+ ion-exchanged hydroxyapatite (OHAp), chlorapatite (ClAp), and fluorapatite (FAp) in aqueous solutions with low pH value of 3.0 or 4.0 have been investigated by X-ray powder pattern-fitting methods. The site occupancy factors of Pb atoms for the M1 (column site) and M2 sites were determined to be 0.72 and 0.77 for Pb7.5Ca2.5---OHAp, 0.69 and 0.86 for Pb7.9Ca2.1---ClAp, and 0.60 and 0.52 for Pb5.5Ca4.5---FAp, respectively. These results imply that Ca2+ ions in calcium hydroxyapatite are exchanged for Pb2+ ions in acidic aqueous solution regardless of whether they occupy M1 or M2 sites. |
| Doi | 10.1016/0022-4596(86)90026-5 |
| Wosid | WOS:A1986AZJ8200011 |
| Is Certified Translation | No |
| Dupe Override | No |
| Is Public | Yes |
| Language Text | English |