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물벼룩과 형광성 박테리아를 이용한 중금속의 급성독성평가
하헌중,김성태,최종욱,민선홍,장태연,김건흥 ( Hern Jung Ha,Sung Tae Kim,Jong Uk Choi,Seon Hong Min,Tae Yeon Jang,Geon Heung Kim ) 한국하천호수학회 1995 생태와 환경 Vol.28 No.3
It is very difficult to estimate the hazardous effects of toxicants because they interact each other in additive, synergistic, and antagonistic ways. Bioassay is an approaching method for toxicity evaluation of actual or potential danger in hazardous wastes. This study is to evaluate the susceptibility of 3 water fleas and luminescent bacteria Photobacterium Phosphoreum to heavy metals. The toxcity test is performed against 7 heavy metals. For water fleas, Hg shows the highest toxicity and Fe shows the lowest toxicity by the 24 or 48 hour LC_(50). For luminescent bacteria, by the 5min EC_(50) Hg is more toxic than any other metals. M. macrosopa and D. psittacea have a good reproductivity in the laboratory and show the possibility as an aquatic toxicity test organism.
윤여원(Yun Yeo Won),문창만(Mun Chang Man),김건흥(Kim Geon Heung) 한국지반공학회 2004 한국지반공학회논문집 Vol.20 No.3
Environmental impact of waste tires as ground-reinforcing material is studied, Analysis for chemical compounds and toxic effect were performed on effluents from twelve lysimeters in which waste tires were mixed with sand and three initially different environmental solutions of acidic, neutral, and basic circulated through the mixture. The test results of effluents collected from the lysimeters provided that the contaminant concentrations were lower than those of Korean drinking water standards for all the selected and tested metal elements. While iron concentration increased slightly with the exposure period, other metal concentrations decreased with the number of circulation times. From the comparison with previous investigations, the contaminant concentration decreased with the increase of tire size, i.e. increases with the increase of the exposed surface of tire metals. From the toxicity tests, no deteriorative effect was observed and it could be concluded that waste tires are not biologically hostile materials.