Analytical Science and Technology (분석과학)

The Korean Society of Analytical Sciences (한국분석과학회)
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Change of chemical properties by neutron irradiation in boric acid solution

중성자 조사에 의한 붕산수의 화학특성 변화

  • 최계천 (한국원자력연구소 원자력화학연구부) ;
  • 연제원 (한국원자력연구소 원자력화학연구부) ;
  • 김원호 (한국원자력연구소 원자력화학연구부)
  • Received : 2005.05.13
  • Accepted : 2005.06.28
  • Published : 2005.08.25
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Abstract

The effect of neutron irradiation on the chemical properties was measured in boric acid solution. The pH of the solution decreased in proportion to the irradiation time and the concentration of boric acid. The concentration of hydrogen peroxide, which is one of the radiolysis products of water, is in proportion to the concentration of boric acid, while in inverse proportion to the irradiation time. The oxygen and hydrogen gases had same chemically equivalent ratio in water radiolysis. The lithiun, which comes from $^{10}B(n,{\alpha})^7Li$, had poor relationship with neutron irradiation time at low concentration, $233{\sim}699{\mu}g/mL$, of boric acid, but the relationship was improved at higher concentration.

붕산수를 중성자 조사하였을 때 발생하는 화학특성 변화를 측정하였다. 붕산 용액의 pH는 조사시간과 붕산농도가 증가할수록 감소하였다. 물의 방사분해물인 과산화수소는 붕산농도에 비례하였고 조사시간에는 반비례하였다. 기체 방사분해물인 수소와 산소기체는 당량비로 생성되었다. $^{10}B(n{\cdot}{\alpha})^7Li$ 핵반응으로 생성된 Li과 조사시간과의 상관관계는 낮은 붕산 농도범위에서는 좋지 않았으나 높은 농도범위에서는 비례성이 다소 좋아지는 현상을 발견하였다.

Keywords

References

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