한국환경농학회지 (Korean Journal of Environmental Agriculture)

  • 제31권4호
  • /
  • Pages.300-307
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  • 2012
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  • 1225-3537(pISSN)
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  • 2233-4173(eISSN)
한국환경농학회 (The Korean Society of Environmental Agriculture)
권호 표지
DOI QR코드

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농작물 재배지 토양 내 비소, 납 및 카드뮴의 농산물로의 전이계수 산출

Transfer Factor of Heavy Metals from Agricultural Soil to Agricultural Products

  • 김지영 (국립농업과학원 농산물안전성부) ;
  • 이지호 (새만금지방환경청 측정분석과) ;
  • ;
  • 강대원 (국립농업과학원 농산물안전성부) ;
  • 김민지 (국립농업과학원 농산물안전성부) ;
  • 류지혁 (국립농업과학원 농산물안전성부) ;
  • 김두호 (국립농업과학원 농산물안전성부) ;
  • 이영자 (국립농업과학원 농산물안전성부) ;
  • 김원일 (국립농업과학원 농산물안전성부)
  • Kim, Ji-Young (Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Lee, Ji-Ho (Division of Monitoring and Analysis, Saemangeum Regional Environmental Office, National Institute Environment Research) ;
  • Kunhikrishnan, Anitha (Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Kang, Dae-Won (Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Min-Ji (Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Yoo, Ji-Hyock (Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Doo Ho (Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Lee, Young-Ja (Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration) ;
  • Kim, Won Il (Department of Agro-Food Safety, National Academy of Agricultural Science, Rural Development Administration)
  • 투고 : 2012.08.16
  • 심사 : 2012.12.18
  • 발행 : 2012.12.31
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초록

본 연구에서는 농산물 중 중금속 함량과 토양 중 중금속 함량을 확인하여 이들의 상관성 및 전이계수를 확인하고자 하였다. 대상 농산물로는 곡류(쌀, 보리, 옥수수), 과채류(콩류, 상추류, 호박류, 사과류, 배류, 감귤류) 9종에 대한 주산단지를 중심으로 비소, 카드뮴 및 납의 함량을 조사하였다. 농산물 및 토양 중 중금속 함량을 조사한 결과 비소, 카드뮴, 납의 농산물로의 전이는 토양 내 이들의 침출성 함량이 주 영향요인으로 작용하였다. 비소의 전이계수는 평균 0.006~0.309, 카드뮴의 전이계수는 평균 0.002~6.185, 납은 평균 0.003~0.602로 카드뮴의 침출성 함량이 다른 금속에 비하여 전이계수가 높게 산정되었다. 토양 내 중금속 침출성 함량에 대한 농산물의 전이능 순서는 비소는 쌀(0.309), 카드뮴은 상추(6.185), 배(0.717), 납은 상추(0.602), 호박(0.536)순으로 비소의 경우 쌀에서, 카드뮴 및 납의 경우, 과채류에서 높게 나타났다. 쌀의 비소 함량은 토양 내 비소 전 함량과 높은 상관성(r=0.41, p < 0.05)을, 콩류 내 카드뮴 함량은 토양 내 카드뮴 전 함량과 높은 상관성(r=0.44, p < 0.05)을, 호박의 카드뮴 함량은 토양 내 카드뮴 전 함량과 높은 상관성(r=0.38, p < 0.05)을 나타내었으며, 영향을 미치는 주 요인으로 작용하였다. 본 연구 결과, 농산물 군에 따라 전이율이 다르나 본 연구 대상 농산물 중 비소의 경우 과채류에 비하여 곡류 중 쌀의 전이율이 높았으며, 이에 대한 기준 설정 및 추가 연구가 필요하며, 카드뮴 및 납은 토양과 근접한 상추 등과 같은 작물에서 높은 전이율을 나타내었다. 또한, 토양 중 중금속 함량이 증가함으로써 작물 내 중금속 함량이 증가함을 확인하였다. 추후 농산물에 대한 전이계수를 산출하면 토양에 따른 농산물의 흡수이행 함량을 예측할 수 있으며, 토양과 농산물간 위해성 평가 및 흡수이행 연구에 기여할 수 있을 것으로 판단된다.

BACKGROUND: The Transfer Factor (TF) of heavy metals from soil to plant is important, because TF is an indicator of heavy metal in soils and a factor that quantifies bioavailability of heavy metals to agricultural products. This study was conducted to investigate the transfer ability of Arsenic (As), Cadmium (Cd), and Lead (Pb) from soil to agricultural products. METHODS AND RESULTS: We investigated heavy metals (As, Cd and Pb) concentrations in 9 agricultural products (rice, barely, corn, pulse, lettuce, pumpkin, apple, pear, tangerin) and soil. TF of agricultural products was evaluated based on total and HCl-extractable soil concentration of As, Cd, and Pb. Regression analysis was used to predict the relationship of total and HCl-extractable concentration with agricultural product contents of As, Cd, and Pb. The result showed that TF was investigated average 0.006~0.309 (As), 0.002~6.185 (Cd), 0.003~0.602 (Pb). The mean TF value was the highest as rice 0.309 in As, lettuce 6.185, pear 0.717, rice 0.308 in Cd, lettuce 0.602, pumpkin 0.536 in Pb which were dependent on the vegetable species and cereal is showed higher than fruit-vegetables in As. CONCLUSION(S): Soil HCl-extractable concentration of As, Cd, and Pb had the larger effects on thier contents in agricultural products than total soil concentrations. We suggests that TF are served as influential factor on the prediction of uptake. Further study for uptake and accumulation mechanism of toxic metals by agricultural products will be required to assess the human health risk and need TF of more agricultural products.

키워드

참고문헌

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