• 한국토양비료학회지
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• 제49권1호
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• pp.81-86
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• 2016

Heavy metal pollution in agricultural fields at the abandoned metal mines has been serious problems in Korea. In order to manage heavy metal pollution in surface water and soil, numerous remediation strategies have been established. Therefore, main purpose of this research was to examine feasibility of ecological toxicity assessment for establishing management strategy in heavy metal polluted agricultural fields. Heavy metal concentration in surface water and soil was monitored along with ecotoxicity experiment with Daphnia magna and Eisenia fetida. Result showed that high toxicity was observed in heavily polluted agricultural field with heavy metals. In case of mortality of Daphnia magna (85%) and Eisenia fetida (6.7%), the highest ratio was observed when heavy metal concentration in surface and soil was high. Calculated ecotoxicity index (EI) ranged 0.06-0.30 and the highest EI was observed in heavily polluted sites among 5 abandoned metal mines. Overall, ecological toxicity assessment is necessary to evaluate heavy metal pollution in agricultural fields near at the abandoned metal mines along with chemical concentration analysis.

• 생명과학회지
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• 제20권10호
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• pp.1468-1475
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• 2010

유기농법과 관행 농법토양, 청정 갯벌과 오염 갯벌토양 그리고 청정 담수와 오염 담수 토양을 이용하여 계절의 변화에 따라 $^{35}SO_4^{-2}$을 이용한 황산염 환원율, 가스크로마토그래피를 이용한 황화수소 생성량, 최적확수 시험법을 이용한 황산염 환원세균의 분포, 공정시험법을 이용한 수분, 암모니아, 총 질소, 총 유기탄소, 총 탄소, 총 무기인, 총 인, 황산염 농도의 토양 성분조사를 실시하였다. 그 결과 황산염 환원율은 황산염의 농도보다 황산염 환원세균의 군집크기와 질소와 인과 같은 토양 성분과 서로 밀접한 관련이 있는 것으로 확인되었다. 그리고 황화수소 생성량은 10월 토양에서 가장 높게 나타났으나, 담수 토양 보다는 높은 황산염 농도를 함유한 갯벌 토양에서 더 높게 나타났고, 청정 지역보다는 오염 지역 토양에서 높은 값을 나타냈다. 따라서 혐기환경의 황산염 환원율과 황화수소 생성량은 황산염 환원세균의 군집과 토양 내 여러 가지 성분 그리고 온도에 의해 영향 받는 것을 확인하였다.

• 농촌계획
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• 제9권2호
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• pp.1-6
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• 2003

This study was performed to investigate the degree of pollution of sediments of stream and reservoir in rural area. A series of field investigations were carried out for Kyongki-do area and chemical analysis were performed for sediment samples. It was found that some samples were heavily polluted with phenol and TPH and gave off a malodor. Soil Pollution Scores(SPSs) was determined for sediment samples. Some samples were classified to Soil Pollution Class(SPC) 2 and 3. For recycling and disposal of dredged sediments from stream and reservoirs, these polluted sediments should be carefully considered. In the environmental improvement operations of rural area, the degree of pollution of sediments of stream and reservoir are carefully investigated and suitable counterplan must be established.

• 한국철도학회논문집
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• 제18권6호
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• pp.552-557
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• 2015

철도부지의 도상자갈은 윤활유, 중금속 등으로 오염된 경우가 많다. 이에 본 연구에서는 오염된 자갈표면의 오염물질을 물리적으로 제거하는 오염도상자갈의 건식 정화 기술 성능을 알아보고자 하였다. 오염도상자갈 표면에 경도가 높은 금강사 연마재를 압축공기를 이용하여 분사할 수 있는 오염자갈 정화 장치를 제작하고, 여기에 오염자갈을 투입하여, 처리 시간을 1~10분까지 다양하게 변화시키면서 도상자갈의 석유계총탄화수소와 중금속 등의 정화 효율을 알아보았다. 석유계총탄화수소 제거 효율은 기관차 정차장에서 포집한 차량 윤활유 오염자갈은 70-80%로 다소 높은 반면에, 분기기에서 포집한 분기기 윤활유 오염자갈은 40-60%로 비교적 낮았다. 중금속 제거 효율은 구리와 납이 90% 이상으로 높은 반면에 니켈과 아연은 65-80%로 비교적 낮았다. 실험 결과 건식 자갈 정화 기술은 오염자갈의 처리에 효율적임을 확인할 수 있었다.

• 한국지하수토양환경학회:학술대회논문집
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• 한국지하수토양환경학회 1996년도 경북지부 결성 및 추계학술발표회 논문집
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• pp.144-147
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• 1996

• 자원환경지질
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• 제30권2호
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• pp.123-135
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• 1997

In order to investigate the dispersion patterns and contamination level of heavy metals in the soil-ecosystem and to evaluate the efficiency of soil remediation by reversed soil method, soils and plants were collected from the Dongjin Au-Ag-Cu mine area and analysed for heavy metals. The dispersion patterns of heavy metals in soils and plants show that heavy metal pollutions caused by waste rump around Dongjin mine are mainly found in the vicinity of the waste rump and in the southward slanting of mine. Toxic metallic pollutants from the mine influence heavy metal contents in paddy soils in downstream area, and may be a potential sources of heavy metal pollution on crop plants. Soil samples collected from the remediated rice farming field by reversed method show similar levels of heavy metal content to those from the polluted rice farming field, but topsoil enrichment of heavy metals are not found. Heavy metal contents of the rice plants collected from remediated rice farming field are significantly lower than those from polluted rice farming field, and it suggests that the reversed soil method is effective for the reduction of bioavailability of heavy metals.

• 한국농공학회:학술대회논문집
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• 한국농공학회 2001년도 학술발표회 발표논문집
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• pp.366-369
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• 2001

This study was performed to investigate the degree of pollution of sediments of stream and reservoir in rural area. A series of site investigations were carried out for Kyongki-do area and chemical analysis were performed for sediment samples. It was found that some samples were heavily polluted with phenol and TPH and gave off a malodor. Soil Pollution Scores(SPSs) was determined for sediment samples. Some samples were classified to Soil Pollution Class(SPC) 2 and 3. For recycling and disposal of dredged sediments from stream and reservoirs, these polluted sediments should be carefully considered. A further study on the criterion of recycling/disposal of sediments and development of new Soil Pollution Index compatible for stream sediments is necessary in future.

• Journal of the Korean Society for Industrial and Applied Mathematics
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• 제18권2호
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• pp.167-180
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• 2014

In this paper we consider a novel reconstruction method in electrical impedance tomography (EIT) and its application for monitoring and detecting a hydrargyrum (mercury) polluted soil near to the surface of underground. We use electrodes placed on the surface of land to collect the data which provides the relations of voltage and current map and to produce a projected image of interior conductivity distribution onto the surface of land. Here the projected image reconstruction method is used to monitor the pollution in soil underneath the ground without any destruction and any digging into a land.

• 한국미생물생명공학회:학술대회논문집
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• 한국미생물생명공학회 2000년도 추계 학술대회
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• pp.118-124
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• 2000

Zn-resistant Methylosobacterium strains were isolated from several non-polluted soil samples collected in all over Japan. Zn-resistant Methylosobacterium strains were predominantly detected in all soil samples and they were also characterized as a UV-tolerant bacteria. The MIC test revealed that the isolates have high zinc resistance in comparison with that of reference Methylosobacterium strains obtained from culture collections. The 16S rDNA-based phylogenetic analysis showed that all strains were divided into two clusters designated as cluster A and cluster B in the present study. All isolates were distributed only in the cluster A. The phylogenetic clustering also well coincided with the differences in the pattern of carbon source utilization.

• 한국환경농학회지
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• 제18권1호
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• pp.24-27
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• 1999

1. 영향의 광산하류 오염지역의 토양중 중금속함량은 비오염지역인 칠곡에 비해 중금속함량이 현저히 높았고, 광산으로부터 거리별 토양중 중금속함량은 2.0 > 2.5 > 3.0km 순으로 함량이 낮았다. 2. 중금속 오염지역의 고추 생육은 정상지역보다 극히 불량하였고 토양 및 고추중 중금속함량도 월등히 많았다. 3. 고추생육과 토양중 Zn, Cu, Pb, Cd, As함량과는 유의한 부의 상관이 인정되었다. 4. 토양중 Zn, Cu,Cd,As함량과 고추의 Zn, Cd, As함량과는 고도의 유의성이 있는 것으로 보아 중금속 오염지에서는 식물체에 흡수 축적되는 것으로 생각되었다.