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RISS 인기검색어
- 검색키워드
- 저자 : Lunchakorn Prathumratana (검색결과 3 건)
- 무료
- 기관 내 무료
- 유료
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Prathumratana, Lunchakorn,Kim, Kyoung-Woong,Kim, Ji-Won 한국암반공학회 2010 Geosystem engineering Vol.13 No.1
Nine soil and three tailing samples collected from a historical Pb mining and smelting site including a vicinity area in Europe were investigated for the chemical fractions and human bioavailability. A five-step sequential extraction procedure was performed to characterize the forms of Pb. A simple bioavailability extraction test (SBET) was conducted as an assessment to determine the bioavailability of Pb in human gastrointestinal condition. Total concentration of Pb in soil and tailing samples ranged from 383 to 73800 mg/kg. Eleven from twelve samples had exceeded the USEPA standard of 400 mg/kg. Fractionation of Pb showed that seven from twelve samples were mainly associated with a reducible fraction (Fe-Mn oxides) for 37.8 to 71.6%. Carbonate fractions were found dominantly in three soil samples of 62.0%, 57.4%, and 68.6%, repectively, with high pH and high total concentration of Pb. A residual fraction was prevalent for tailing samples. Low pH in tailing samples may influence the mobility of Pb and increasing of soil pH seemed to increase Pb content in the carbonate fraction. Extremely high values of Pb from human bioavailability assessment (SBET) (more than 60%) indicated that long-term exposure of these soils could pose a potential health effect to the local population.
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김경웅,Lunchakorn Prathumratana,김지원 한국자원공학회 2010 Geosystem engineering Vol.13 No.1
Nine soil and three tailing samples collected from a historical Pb mining and smelting site including a vicinity area in Europe were investigated for the chemical fractions and human bioavailability. A five-step sequential extraction procedure was performed to characterize the forms of Pb. A simple bioavailability extraction test (SBET) was conducted as an assessment to determine the bioavailability of Pb in human gastrointestinal condition. Total concentration of Pb in soil and tailing samples ranged from 383 to 73800 mg/kg. Eleven from twelve samples had exceeded the USEPA standard of 400 mg/kg. Fractionation of Pb showed that seven from twelve samples were mainly associated with a reducible fraction (Fe-Mn oxides) for 37.8 to 71.6%. Carbonate fractions were found dominantly in three soil samples of 62.0%, 57.4%,and 68.6%, repectively, with high pH and high total concentration of Pb. A residual fraction was prevalent for tailing samples. Low pH in tailing samples may influence the mobility of Pb and increasing of soil pH seemed to increase Pb content in the carbonate fraction. Extremely high values of Pb from human bioavailability assessment (SBET) (more than 60%) indicated that long-term exposure of these soils could pose a potential health effect to the local population.
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Bui Thi Nuong,김경웅,Lunchakorn Prathumratana,이안나,이근영,김태혁,윤석호,장민,Bui Du Duong 한국자원공학회 2011 Geosystem engineering Vol.14 No.1
Mining activities have not only provided positive impacts on eco-social development but also caused many adverse ones on social and environmental conditions. Measurement of sustainable development for this specific economic sector requires specific considerations and implements in a sustainable development concept. This paper provides essential information regarding sustainable development issues, sustainable development evaluation and the wide range of effective applications of the two multi-criteria approaches, analytic hierarchy process (AHP)and fuzzy AHP. The aims of this paper are to discuss the urgent tasks of sustainable development problems in the mining sector, and to suggest a potential and practical approach of fuzzy AHP in the evaluation of sustainable development for mining sector. Moreover, this paper discusses the strong possibility of fuzzy AHP approaches for designing a sustainability system in the mining sector and handling uncertainty in deriving the priorities of components in a mining sustainability system. Once sustainable development hierarchy, including criteria and their behavior indicators specific for the mining sector, is established, fuzzy theory and the concept of fuzzy AHP can be utilized in evaluation of priority for each component. The result could provide a useful foundation for further sustainability evaluation researches for the mining sector.
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