폐광인근 논토양 비소의 형태별 함량과 생물학적 유효도

Arsenic Fractionation and Bioavailability in Paddy Soils Near Closed Mines in Korea

  • 김원일 (국립농업과학원 유해화학과) ;
  • 김종진 (국립농업과학원 유해화학과) ;
  • 류지혁 (국립농업과학원 유해화학과) ;
  • 김지영 (국립농업과학원 유해화학과) ;
  • 이지호 (국립농업과학원 유해화학과) ;
  • 백민경 (국립농업과학원 농자재평가과) ;
  • 김록영 (국립농업과학원 토양비료관리과) ;
  • 임건재 (국립농업과학원 유해화학과)
  • Kim, Won-Il (Chemical Safety Division, National Academy of Agricultural Science, RDA) ;
  • Kim, Jong-Jin (Chemical Safety Division, National Academy of Agricultural Science, RDA) ;
  • Yoo, Ji-Hyock (Chemical Safety Division, National Academy of Agricultural Science, RDA) ;
  • Kim, Ji-Young (Chemical Safety Division, National Academy of Agricultural Science, RDA) ;
  • Lee, Ji-Ho (Chemical Safety Division, National Academy of Agricultural Science, RDA) ;
  • Paik, Min-Kyoung (Agro-materials Safety Evaluation Division, National Academy of Agricultural Science, RDA) ;
  • Kim, Rog-Young (Soil & Fertilizer Management Division, National Academy of Agricultural Science, RDA) ;
  • Im, Geon-Jae (Chemical Safety Division, National Academy of Agricultural Science, RDA)
  • 투고 : 2010.11.24
  • 심사 : 2010.12.17
  • 발행 : 2010.12.31

초록

To assess the bioavailability of As in soils and to provide a basic information for adequate management of As contaminated fields, paddy soils and rice grains near 5 closed mines were collected and analyzed for As using sequential extraction procedure. The As contents extracted with 1M HCl against total As content in soils were ranged from 5.4 to 41.9% ($r=0.90^{**}$). However, these two contents of As in soils were not positively correlated with As concentration in rice grains. Major As fractionation of paddy soils was residual form ranging 38.1 to 84.1% except NS mine. Also, specially adsorbed fraction and fraction associated with amorphous Fe and Al oxyhydroxides, which are partially bioavailable As fractionation to the rice plant, were positively correlated with As in rice grains while fraction associated with crystalline Fe and Al oxyhydroxides and residual form were not correlated.

키워드

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