PMID- 9068892 OWN - NLM STAT- MEDLINE DCOM- 19970616 LR - 20190815 IS - 0142-9612 (Print) IS - 0142-9612 (Linking) VI - 18 IP - 4 DP - 1997 Feb TI - Investigation of the dissolution of the bioceramic hydroxyapatite in the presence of titanium ions using ToF-SIMS and XPS. PG - 311-6 AB - Time-of-flight secondary ion mass spectrometry (ToF-SIMS) and X-ray photoelectron spectroscopy (XPS) analyses have been used to investigate the dissolution of hydroxyapatite in the presence of titanium chloride suggesting the substitution of titanium ions for calcium in the hydroxyapatite structure. The surface analytical data suggest that titanium was incorporated within the solid phase as titanium phosphate. Comparison of relative ion intensities in the ToF-SIMS spectra reveals changes in the composition of the surface chemistry of hydroxyapatite. These relative ion intensities show that the maximum surface uptake of titanium occurred at a solution concentration of 500 ppm titanium chloride for a time of incubation of 30 min. These data correlate with that obtained using XPS highlighting the semi-quantitative information which ToF-SIMS can provide. FAU - Leadley, S R AU - Leadley SR AD - Department of Pharmaceutical Sciences, University of Nottingham, UK. FAU - Davies, M C AU - Davies MC FAU - Ribeiro, C C AU - Ribeiro CC FAU - Barbosa, M A AU - Barbosa MA FAU - Paul, A J AU - Paul AJ FAU - Watts, J F AU - Watts JF LA - eng PT - Journal Article PL - Netherlands TA - Biomaterials JT - Biomaterials JID - 8100316 RN - 0 (Biocompatible Materials) RN - 0 (Cations) RN - 91D9GV0Z28 (Durapatite) RN - D1JT611TNE (Titanium) SB - IM MH - Biocompatible Materials/*chemistry MH - Cations MH - Ceramics/*chemistry MH - Durapatite/*chemistry MH - Spectrometry, Mass, Secondary Ion MH - Spectrometry, X-Ray Emission MH - Titanium/*chemistry EDAT- 1997/02/01 00:00 MHDA- 1997/02/01 00:01 CRDT- 1997/02/01 00:00 PHST- 1997/02/01 00:00 [pubmed] PHST- 1997/02/01 00:01 [medline] PHST- 1997/02/01 00:00 [entrez] AID - S0142961296001342 [pii] AID - 10.1016/s0142-9612(96)00134-2 [doi] PST - ppublish SO - Biomaterials. 1997 Feb;18(4):311-6. doi: 10.1016/s0142-9612(96)00134-2.