Rapid Dissolution Techniques with Microwave Heating Devices for Solidified Products Made from Non-Metallic Wastes by Plasma Melting

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Other Title
  • プラズマ溶融処理した非金属廃棄物のマイクロ波加熱装置を用いる迅速溶解法
  • アナリティカルレポート プラズマ溶融処理した非金属廃棄物のマイクロ波加熱装置を用いる迅速溶解法
  • アナリティカルレポート プラズマ ヨウユウ ショリ シタ ヒキンゾク ハイキブツ ノ マイクロハ カネツ ソウチ オ モチイル ジンソク ヨウカイホウ

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Abstract

A relatively large quantity of sample solutions have to be prepared for the radiochemical analysis of solidified products yielded by a plasma melting treatment of non-metallic radioactive wastes. In order to dissolve a sample of solidified products rapidly, a dissolution method with microwave heating devices was applied. In a conventional method involving only external heating with various mixtures of acids (HNO3, HF, HClO4 and H2SO4), a 0.1 g amount of the sample was dissolved with difficulty. However, upon applying the microwave-assisted dissolution method, a 1 g amount of the sample was completely dissolved in a shorter time. Thereby the time for dissolution procedures was shortened to less than one-tenth. The present dissolution method was successfully applied to blast furnace slag as a reference material to determine the main elements with good precision.<br>

Journal

  • BUNSEKI KAGAKU

    BUNSEKI KAGAKU 55 (1), 51-54, 2006

    The Japan Society for Analytical Chemistry

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