AlF分子吸光法によるプラーク中総フッ素の定量
書誌事項
- タイトル別名
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- Total fluoride determination in dental plaque by AlF molecular absorption spectrometry.
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説明
Total fluoride (F) determination in dental plaque is rather complicated because of its small quantities and low F concentration smapled from the individual. Full dissociation of the bound F in dental plaque is also required for the assay by F sensitive electrode.<BR>Recently, AlF (aluminum monofluoride) molecular absorption spectrometry was developed for the ultratrace analysis of F. An application of this method to the determination of total F in dental plaque was investigated.<BR>The results were as follows:<BR>1) The AIF absorbance was linearly increased by increase of F (5-50ng/ml) added to sample solutions (0.5-2.1mgdry plaque/ml). The regression coefficients of sample solutions were almost equal to that of the standard solution. The sensitivity was 0.066ng F per 20μl standard solution at the 1% absorption level, and the relative detection limit was 0.0036ppm (3.6ppb).<BR>2) The variations of absorbance increased with the plaque amounts, but the recovery of fluorine from sample solution was not affected by the amounts of plaque contained.<BR>3) The coefficient of variation of F concentration in small plaque samples (approximately 1mg dry weight) ranged from 8.6 to 15.9%, and F concentrations of five pooled plaque samples ranged from 8.0 to 12.3ppm (dry weight).<BR>These experiments suggest that AlF molecular absorption spectrometry is useful for analysis of total F in dental plaque, especially in small samples and at low F concentrations.
収録刊行物
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- 口腔衛生学会雑誌
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口腔衛生学会雑誌 39 (1), 59-64, 1989
一般社団法人 口腔衛生学会
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詳細情報 詳細情報について
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- CRID
- 1390282679978928128
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- NII論文ID
- 130001316187
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- ISSN
- 21897379
- 00232831
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
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- 抄録ライセンスフラグ
- 使用不可