• The Validation Study of Auto Anlysis Method Combined with Aqua Regia Digestion for Fluorine of Soil
  • Na, Kyung-Ho;Yun, In-Chul;Lee, Jung-Bok;
  • Gyeonggido Institute of Health & Environment;BLTEC Korea Limited;Gyeonggido Institute of Health & Environment;
  • 왕수분해와 결합한 자동분석법의 토양 중 불소시험 유효성 연구
  • 나경호;윤인철;이정복;
  • 경기도보건환경연구원;비엘텍 코리아;경기도보건환경연구원;
Abstract
The purpose of this research is to check the validation of an auto-analysis method combined with aqua regia digestion apparatus for improvement of water distillation method used as a fluorine test of soil. Fluorine contents of CaO used in the pretreatment course of water distillation method were 120 mg/kg ~ 5,064 mg/kg at the blank test, which was exceeded up to maximum 12.5 times of the soil standard, so it was estimated due to a effect of fluorine existing as impurities of CaO. The recovery test of the same samples indicated that water distillation method and auto-analysis method were 134.5mg/kg and 161.7mg/kg respectively, the recovery ratio of the latter was 16.8% higher than the formal. The validation test of two methods satisfied the standard, but auto analysis method was excellent more than distillation method. Also, auto analysis method could save a analysis time up to maximum 4.7 times by comparison with water distillation method.

Keywords: Fluorine of soil;Water distillation method;Automatic analysis method;Validation;Uncertainty;

This Article

  • 2010; 15(5): 8-15

    Published on Oct 31, 2010

  • Received on Jun 4, 2010
  • Accepted on Sep 14, 2010

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