X-ray Diffractometerによる縮合リン酸塩(NaPO<SUB>3</SUB>-Na<SUB>5</SUB>P<SUB>3</SUB>O<SUB>10</SUB>系)の定量分析
書誌事項
- タイトル別名
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- Quantitative analysis of condensed phosphate (NaPO<SUB>3</SUB>-Na<SUB>5</SUB>P<SUB>3</SUB>O<SUB>10</SUB> system) with Geiger-Counter X-ray diffractometer
- X-ray Diffractometer ニ ヨル シュクゴウ リンサンエン NaPO3-Na5P3O10ケイ ノ テイリョウ ブンセキ
- X-ray Diffractometerによる工業分析法の研究(IV)
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説明
Inas much as the application of chemical analysis to condensed phosphates is difficult, a study has been made of the possible application of an X-ray diffractometer to the quantitative analysis of condensed phosphate (NaPO3-Na5P3O10 system), which generally contains an amorphous part.<BR>In such condensed phosphates, the amorphous part is easily transformed to a mixture of crystalline NaPO3 and Na5P3O10 by heat treatment at an adequate temperature. It is then possible to infer or deduce various characteristics of the original sample (before the heat treatment); and there-by to control the quality of industrial products by means of the analysis of the composition of the crystalline mixture obtained by the heat treatment.<BR>NaPO3 (I) and Na5P3O10 (I) were employed as the crystal forms for the analysis because they are more stable; and their treatment is easier, and their diffraction intensity is stronger than those of any other crystal form. The sample was heated at 500550°C. CaSO4·1/2 H2O was used as the internal standard.<BR>As a result of an examination of the heating time, it was seen that the transformation to NaPO3 (I) is rapid, so that accurate results can be produced by heating 1 hr. at 500°C; while to be sufficiently transformed to Na5P3O10 (I) it is necessary that the sample be heated more than 2 hrs. at the same temperature. The smaller its content is, the longer the sample should be heated.<BR>The average deviation of the experimental results was of the order of 5%. Several samples (both commercial and laboratory) were investigated, and some interesting facts were obtained.
収録刊行物
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- 分析化学
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分析化学 7 (5), 287-292, 1958
公益社団法人 日本分析化学会
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詳細情報 詳細情報について
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- CRID
- 1390001204660068608
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- NII論文ID
- 130000956408
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- NII書誌ID
- AN00222633
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- NDL書誌ID
- 10104875
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- ISSN
- 05251931
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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
- NDL
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- 使用不可