The Fluoridation of Nonstoichiometric Calcium Hydroxyapatite. An Infrared Study
Calcium deficient hydroxyapatites were impregnated to varying degrees with fluoride in very dilute solutions of NaF at room temperature. Ca/P ratios were determined before and after fluoridation. Phosphate loss upon fluoridation was consistent with an initial mechanism of OH − vacancy filling by F −...
Gespeichert in:
| Veröffentlicht in: | Canadian journal of chemistry 1974-12, Vol.52 (24), p.4001-4006 |
|---|---|
| Hauptverfasser: | , , |
| Format: | Artikel |
| Sprache: | eng |
| Online-Zugang: | Volltext |
| Tags: |
Tag hinzufügen
Keine Tags, Fügen Sie den ersten Tag hinzu!
|
| container_end_page | 4006 |
|---|---|
| container_issue | 24 |
| container_start_page | 4001 |
| container_title | Canadian journal of chemistry |
| container_volume | 52 |
| creator | Amberg, C. H Luk, H. C Wagstaff, K. P |
| description | Calcium deficient hydroxyapatites were impregnated to varying degrees with fluoride in very dilute solutions of NaF at room temperature. Ca/P ratios were determined before and after fluoridation. Phosphate loss upon fluoridation was consistent with an initial mechanism of OH
−
vacancy filling by F
−
, with equivalent amounts of PO
4
3−
ions escaping to restore charge balance. Infrared measurements confirmed previous evidence of OH/F exchange and the formation of
hydrogen bonds, which increased with progressive thermal activation, considerable exchange having occurred already at 120 °C and possibly below. The first signs of lattice collapse occurred near 600 °C, with the fluorided sample exhibiting somewhat better stability. |
| doi_str_mv | 10.1139/v74-597 |
| format | Article |
| fullrecord | <record><control><sourceid>crossref_nrcre</sourceid><recordid>TN_cdi_nrcresearch_primary_10_1139_v74_597</recordid><sourceformat>XML</sourceformat><sourcesystem>PC</sourcesystem><sourcerecordid>10_1139_v74_597</sourcerecordid><originalsourceid>FETCH-LOGICAL-c221t-6a1b181192eae03da52b836bd7193f85b75c5d49c789259457c13caad793b4743</originalsourceid><addsrcrecordid>eNp90E9LwzAYx_EgCs4pvoWcFITOPPmzNMdRnBsMd3CeS5qkNLI1I2nFvnsr21VPDw98-B2-CN0DmQEw9fwleSaUvEAT4DnJGFVwiSaEkDzjhNNrdJPS5_hKQsUEbXeNw8t9H6K3uvOhxaHGb6FNXfCm8eHguugNLvTe-P6AV4ON4XvQx9F2boYXLV63ddTRWfze9Xa4RVe13id3d75T9LF82RWrbLN9XReLTWYohS6ba6ggB1DUaUeY1YJWOZtXVoJidS4qKYywXBmZKyoUF9IAM1pbqVjFJWdT9HjaNTGkFF1dHqM_6DiUQMrfDuXYoRw7jPLpJNtooktOR9P8gx_-xmdUHm3NfgAIH2vF</addsrcrecordid><sourcetype>Aggregation Database</sourcetype><iscdi>true</iscdi><recordtype>article</recordtype></control><display><type>article</type><title>The Fluoridation of Nonstoichiometric Calcium Hydroxyapatite. An Infrared Study</title><source>NRC Research Press</source><source>EZB-FREE-00999 freely available EZB journals</source><source>Free Full-Text Journals in Chemistry</source><creator>Amberg, C. H ; Luk, H. C ; Wagstaff, K. P</creator><creatorcontrib>Amberg, C. H ; Luk, H. C ; Wagstaff, K. P</creatorcontrib><description>Calcium deficient hydroxyapatites were impregnated to varying degrees with fluoride in very dilute solutions of NaF at room temperature. Ca/P ratios were determined before and after fluoridation. Phosphate loss upon fluoridation was consistent with an initial mechanism of OH
−
vacancy filling by F
−
, with equivalent amounts of PO
4
3−
ions escaping to restore charge balance. Infrared measurements confirmed previous evidence of OH/F exchange and the formation of
hydrogen bonds, which increased with progressive thermal activation, considerable exchange having occurred already at 120 °C and possibly below. The first signs of lattice collapse occurred near 600 °C, with the fluorided sample exhibiting somewhat better stability.</description><identifier>ISSN: 0008-4042</identifier><identifier>EISSN: 1480-3291</identifier><identifier>DOI: 10.1139/v74-597</identifier><language>eng</language><publisher>Ottawa, Canada: NRC Research Press</publisher><ispartof>Canadian journal of chemistry, 1974-12, Vol.52 (24), p.4001-4006</ispartof><lds50>peer_reviewed</lds50><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c221t-6a1b181192eae03da52b836bd7193f85b75c5d49c789259457c13caad793b4743</citedby></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://cdnsciencepub.com/doi/pdf/10.1139/v74-597$$EPDF$$P50$$Gnrcresearch$$H</linktopdf><linktohtml>$$Uhttps://cdnsciencepub.com/doi/full/10.1139/v74-597$$EHTML$$P50$$Gnrcresearch$$H</linktohtml><link.rule.ids>314,780,784,2932,27924,27925,64428,65234</link.rule.ids></links><search><creatorcontrib>Amberg, C. H</creatorcontrib><creatorcontrib>Luk, H. C</creatorcontrib><creatorcontrib>Wagstaff, K. P</creatorcontrib><title>The Fluoridation of Nonstoichiometric Calcium Hydroxyapatite. An Infrared Study</title><title>Canadian journal of chemistry</title><addtitle>Revue canadienne de chimie</addtitle><description>Calcium deficient hydroxyapatites were impregnated to varying degrees with fluoride in very dilute solutions of NaF at room temperature. Ca/P ratios were determined before and after fluoridation. Phosphate loss upon fluoridation was consistent with an initial mechanism of OH
−
vacancy filling by F
−
, with equivalent amounts of PO
4
3−
ions escaping to restore charge balance. Infrared measurements confirmed previous evidence of OH/F exchange and the formation of
hydrogen bonds, which increased with progressive thermal activation, considerable exchange having occurred already at 120 °C and possibly below. The first signs of lattice collapse occurred near 600 °C, with the fluorided sample exhibiting somewhat better stability.</description><issn>0008-4042</issn><issn>1480-3291</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>1974</creationdate><recordtype>article</recordtype><recordid>eNp90E9LwzAYx_EgCs4pvoWcFITOPPmzNMdRnBsMd3CeS5qkNLI1I2nFvnsr21VPDw98-B2-CN0DmQEw9fwleSaUvEAT4DnJGFVwiSaEkDzjhNNrdJPS5_hKQsUEbXeNw8t9H6K3uvOhxaHGb6FNXfCm8eHguugNLvTe-P6AV4ON4XvQx9F2boYXLV63ddTRWfze9Xa4RVe13id3d75T9LF82RWrbLN9XReLTWYohS6ba6ggB1DUaUeY1YJWOZtXVoJidS4qKYywXBmZKyoUF9IAM1pbqVjFJWdT9HjaNTGkFF1dHqM_6DiUQMrfDuXYoRw7jPLpJNtooktOR9P8gx_-xmdUHm3NfgAIH2vF</recordid><startdate>19741215</startdate><enddate>19741215</enddate><creator>Amberg, C. H</creator><creator>Luk, H. C</creator><creator>Wagstaff, K. P</creator><general>NRC Research Press</general><scope>AAYXX</scope><scope>CITATION</scope></search><sort><creationdate>19741215</creationdate><title>The Fluoridation of Nonstoichiometric Calcium Hydroxyapatite. An Infrared Study</title><author>Amberg, C. H ; Luk, H. C ; Wagstaff, K. P</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c221t-6a1b181192eae03da52b836bd7193f85b75c5d49c789259457c13caad793b4743</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>1974</creationdate><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Amberg, C. H</creatorcontrib><creatorcontrib>Luk, H. C</creatorcontrib><creatorcontrib>Wagstaff, K. P</creatorcontrib><collection>CrossRef</collection><jtitle>Canadian journal of chemistry</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Amberg, C. H</au><au>Luk, H. C</au><au>Wagstaff, K. P</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>The Fluoridation of Nonstoichiometric Calcium Hydroxyapatite. An Infrared Study</atitle><jtitle>Canadian journal of chemistry</jtitle><addtitle>Revue canadienne de chimie</addtitle><date>1974-12-15</date><risdate>1974</risdate><volume>52</volume><issue>24</issue><spage>4001</spage><epage>4006</epage><pages>4001-4006</pages><issn>0008-4042</issn><eissn>1480-3291</eissn><abstract>Calcium deficient hydroxyapatites were impregnated to varying degrees with fluoride in very dilute solutions of NaF at room temperature. Ca/P ratios were determined before and after fluoridation. Phosphate loss upon fluoridation was consistent with an initial mechanism of OH
−
vacancy filling by F
−
, with equivalent amounts of PO
4
3−
ions escaping to restore charge balance. Infrared measurements confirmed previous evidence of OH/F exchange and the formation of
hydrogen bonds, which increased with progressive thermal activation, considerable exchange having occurred already at 120 °C and possibly below. The first signs of lattice collapse occurred near 600 °C, with the fluorided sample exhibiting somewhat better stability.</abstract><cop>Ottawa, Canada</cop><pub>NRC Research Press</pub><doi>10.1139/v74-597</doi><tpages>6</tpages></addata></record> |
| fulltext | fulltext |
| identifier | ISSN: 0008-4042 |
| ispartof | Canadian journal of chemistry, 1974-12, Vol.52 (24), p.4001-4006 |
| issn | 0008-4042 1480-3291 |
| language | eng |
| recordid | cdi_nrcresearch_primary_10_1139_v74_597 |
| source | NRC Research Press; EZB-FREE-00999 freely available EZB journals; Free Full-Text Journals in Chemistry |
| title | The Fluoridation of Nonstoichiometric Calcium Hydroxyapatite. An Infrared Study |
| url | https://sfx.bib-bvb.de/sfx_tum?ctx_ver=Z39.88-2004&ctx_enc=info:ofi/enc:UTF-8&ctx_tim=2025-01-01T23%3A55%3A37IST&url_ver=Z39.88-2004&url_ctx_fmt=infofi/fmt:kev:mtx:ctx&rfr_id=info:sid/primo.exlibrisgroup.com:primo3-Article-crossref_nrcre&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.genre=article&rft.atitle=The%20Fluoridation%20of%20Nonstoichiometric%20Calcium%20Hydroxyapatite.%20An%20Infrared%20Study&rft.jtitle=Canadian%20journal%20of%20chemistry&rft.au=Amberg,%20C.%20H&rft.date=1974-12-15&rft.volume=52&rft.issue=24&rft.spage=4001&rft.epage=4006&rft.pages=4001-4006&rft.issn=0008-4042&rft.eissn=1480-3291&rft_id=info:doi/10.1139/v74-597&rft_dat=%3Ccrossref_nrcre%3E10_1139_v74_597%3C/crossref_nrcre%3E%3Curl%3E%3C/url%3E&disable_directlink=true&sfx.directlink=off&sfx.report_link=0&rft_id=info:oai/&rft_id=info:pmid/&rfr_iscdi=true |