A Study on the Pretreatment of BaTiOx Ceramics for the Analysis of Ba, Ti and W using Acid Digestion Bomb

가압 산분해법을 이용한 BaTiOx계 세라믹재료 중 Ba, Ti 및 W 분석을 위한 전처리 연구

  • Park, Kyung-Su (Advanced Analysis Center, Korea Institute of Science and Technology) ;
  • Kim, Sun-Tae (Advanced Analysis Center, Korea Institute of Science and Technology) ;
  • Shim, Eui-Sup (Advanced Analysis Center, Korea Institute of Science and Technology) ;
  • Seo, Min-Jung (Advanced Analysis Center, Korea Institute of Science and Technology) ;
  • Lee, Seoung-Jae (Analytical Engineering Team, Samsung Electro-Mechanics Co., Ltd.)
  • 박경수 (한국과학기술연구원 특성분석센터) ;
  • 김선태 (한국과학기술연구원 특성분석센터) ;
  • 심의섭 (한국과학기술연구원 특성분석센터) ;
  • 서민정 (한국과학기술연구원 특성분석센터) ;
  • 이성재 (삼성전기주식회사 종합연구소)
  • Received : 2001.10.04
  • Published : 2002.02.25

Abstract

The pretreatment of tungsten added $BaTiO_x$ ceramics was performed to improve the recovery of Ba, Ti and W. $BaTiO_x$ ceramics were digested with HF : HCl ( 1 : 2 ) mixture in an acid digestion bomb at $220^{\circ}C$ for 3 hrs. The concentration of Ba, Ti and W were determined by ICP-AES. Recoveries of Ba, Ti and W were 99.6%, 99.8% and 99.2%, respectively. And their C.V. values were 1.02%, 0.73% and 1.79%. Using this method, the analytical results of Ba, Ti and W for a real sample were obainted to be 25.9% (w/w), 38.8% (w/w) and 3.31% (w/w), respectively.

Keywords

$BaTiO_x$;Ba;Ti;W;acid digestion bomb;ICP-AES

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