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Determination of fluoride in bone by aluminum monofluoride molecular absorption spectrometry

โœ Scribed by Pathapragada Venkateswarlu

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
660 KB
Volume
262
Category
Article
ISSN
0003-2670

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โœฆ Synopsis

Phosphate, by vutue of Its mtrmslc capacity to form complexes with alummum, Interferes extensively with the alummum monofluonde molecular absorption spectrometnc (MAS) method for fluonde However, It has now been found that m the presence of cakmm there was no such Interference when the ratlo of phosphate to calcmm was smular to that m calcmm phosphate On the other hand, there was an enhancement of the AlF slgnal This observation IS now the basis of an AIF MAS method for deterrmnatlon of fluoride m bone ash, which IS essentially calcmm phosphate The procedure mvolves mlectmg formic acid solutions of bone ash and of calcmm phosphate-fluonde standards mto a graphite furnace and obtammg the AlF absorbances at 227 5 nm Results of analyses of bone samples obtained by the AIF MAS method are m excellent agreement with those obtamed wth the fluoride electrode

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