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농경지 토양의 중금속 오염원 및 농작물로의 중금속 전이·축적 평가
임가희,조훈제,박경훈,윤성미,김지인,노회정,김현구,윤정기,Lim, Ga-Hee,Jo, Hun-Je,Park, Gyoung-Hun,Yun, Sung-Mi,Kim, Ji-In,Noh, Hoe-Jung,Kim, Hyun-Koo,Yoon, Jeong-Ki 한국지하수토양환경학회 2018 지하수토양환경 Vol.23 No.3
It is important to identify the contaminant sources and to evaluate the fate and transport of heavy metals to crops in agricultural lands. This study was conducted to evaluate metal sources and its transfer and accumulation to crop in agricultural soils. Pollution indices were calculated and multivariate analysis was performed to identify metal sources. To evaluate transfer and accumulation of metals to crops, the contents of phytoavailable metals were evaluated by using single extraction method and the correlation between metal content and soil properties was analyzed. Also the BCF was quantitatively evaluated for investigating the metal transition to each crop grown in the research area. As a result, Cr, Ni, and Co were expected to be mainly derived from geologic factors due to weathering of certain parent rocks. The content of nickel in soils of the research area was slightly higher than that of the concern level criteria based on total concentration, but the amount transferred and accumulated in the crops was actually low. Understanding the contamination characteristics by investigating the pollution sources of heavy metals and its transfer and accumulation to crops through various evaluation techniques could provide important information for proper management of the agricultural land.
석회와 유기물이 산성 산림토양의 Al과 Pb 불용화에 미치는 영향
김록영 ( Rog-young Kim ),윤정기 ( Jeong-ki Yoon ),김지인 ( Ji In Kim ),박경훈 ( Gyoung-hun Park ),윤성미 ( Sung Mi Yun ),김종모 ( Jong Mo Kim ),알렉산더쉐닝 ( Alexander Schoening ),김태승 ( Tae-seung Kim ) 한국환경농학회 2016 한국환경농학회 학술대회집 Vol.2016 No.-
The toxic effects of Al and Pb on trees, earthworms, and microorganisms in acidic forest soils are well known. As a remedial measure the surfaces of forest soils worldwide have been limed. Depending on the thickness of the organic layer on the forest soils the applied lime leaches with a delay of several years into deeper layers of the mineral soil. Furthermore, the lime applied is often neutralized in the organic layer even before it reaches mineral soil horizons. Therefore, this study was conducted to investigate the effect of liming on soil pH and immobilization of Al and Pbin acidic forest soils aftermixing the lime with the mineral soil. The dolomitelime together with the organic layeron the forest soils was strip wise mixed with the soil material to a depth of 35 cm. The investigation took place 8 months after the treatment. Soil treatment led to significant increases of the pH in the upper 35 cm of the soil. The soil of the untreated control strip was highly acidic with pH(CaCl2)of 3.4-3.7, whereas pH(CaCl2) in the treated strips were between 4.0 and 5.1. The total contents of Al and Pbin soils did not differ from the treated strip to the untreated strip. However, the mobile fractions of Al and Pb were significantly reduced from an average of 362 to 69.3 mg kg-1 for Al and 2.9 to 0.7 mg kg-1 for Pb. This improvedinitial soil conditions will probably lead to an advanced growingfor the planted trees.
윤정기,김록영,김지인,노회정,유순주,김태승,이명규,윤대근,이홍길,김인자,박경훈,Yoon, Jeong-Ki,Kim, Rog-Young,Kim, Ji In,Noh, Hoe-Jung,Yu, Soon-Ju,Kim, Tae Seung,Lee, Myung Gyu,Yun, Dae-Geun,Lee, Hong-gil,Kim, In Ja,Park, Gyoung-Hun 한국지하수토양환경학회 2015 지하수토양환경 Vol.20 No.7
This study was performed to provide fundamental data to establish the new soil pollution standards and the soil contamination management plans in a rational manner. The distribution characteristics of new soil contaminants such as barium (Ba) and chromium (Cr) in soils (n=140) were investigated in relation to land-use classification and geological features. Also, the sequential extraction test was conducted to evaluate fate and mobility of new soil contaminants. The soil samples taken from 140 sites were analyzed to survey distribution levels of selected new soil contaminants. The average concentration and range for hazardous metals (Ba, Cr) were Ba 128.946 (26.757~489.587) mg/kg, Cr 30.121 (2.579~132.783) mg/kg. Based on land use classification, the highest Ba concentration was found in factory soils, followed by dry field and park soils, while Cr concentration was highest in rice paddy soils, followed by dry field and factory soils. Within 10 geological units investigated the highest Ba and Cr concentrations were observed in the soils from Okcheon group and metamorphic rocks, respectively. The BCR (European Community Bureau of Reference) sequential extraction was conducted to identify chemical distributional existence of 2 elements of soils from each geological unit. Ba in soils is mainly assumed to exists as reducible form (such as BaSO<sub>4</sub>, BaCO<sub>3</sub>) and Cr in soils mainly is assumed to exist as residual form (such as Cr<sub>2</sub>O<sub>3</sub>, Cr<sub>x</sub>Fe<sub>1-x</sub>(OH)<sub>3</sub>(x < 1)).