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대구지역 금호강 및 주요 지천 퇴적물의 시·공간적 독성변화
정홍배,문성환,정진애,김재현,박정규,배철한,황인영 환경독성보건학회 2001 환경독성보건학회지 Vol.16 No.4
In aqueous ecosystems, the level of toxicity is highly responsive dependant to multiple variables, including rainfall, sunlight, pH, adhesion, etc. Because Korea has particularly distinct wet and dry seasons, the toxicity of pollutants in rivers or streams is dependant on the sampling season and time. In order to examine the effects of rainfall on toxicity, sediment samples were collected from five sites along the Keumho river. It was found that Microtox toxicity levels were generally higher during the dry season than the wet season. It indicated that river pollutants are carried off more quickly by the water during the wet season. As a result, it was recommended that the point sources of pollutants of the Keumho river would be placed between KH3 (Paldalgyo) and KH4 (Keumhogyo), KH4 (Keumhogyo) and KH5 (Dasa).
대구지역 금호강 및 주요 지천 퇴적물의 시·공간적 독성변화
정홍배,문성환,정진애,김재현,박정규,배철한,황인영 한국환경독성학회 2001 환경독성보건학회지 Vol.16 No.4
1. 사전에 선정된 공통 조사 정점들 가운데 KㆍH4(금호대교)이후의 퇴적물 독성이 상부의 것보다 크게 나타났다. 즉, 정점 KH3과 KH4, 그리고 KH4와 KH5 사이에 독성물질 유입원이 있는 것으로 판단되었다. 2. 하천 퇴적물의 독성 수준에 영향을 주고 있는 물질의 종류와 배출원 파악이 필요하였다. 이러한 내용을 향후 계속적 연구 및 조사를 통하여 수행되어야 하는 과제라 사료된다. 3. 퇴적물 시료의 채취 시점에 따라서 동일 정점의 독성 변화가 심하였다. 유해화학물질에 의한 오염 수준과 하천 생태계의 영향을 예측하기 위해서는 하천 퇴적물을 대상으로 경시적으로 독성의 변화를 계속 관측하는 것이 필요하다고 판단되었다. In aqueous ecosystems, the level of toxicity is highly responsive dependant to multiple variables, including rainfall, sunlight, pH, adhesion, etc. Because Korea has particularly distinct wet and dry seasons, the toxicity of pollutants in rivers or streams is dependant on the sampling season and time. In order to examine the effects of rainfall on toxicity, sediment samples were collected from five sites along the Keumho river. It was found that Microlox toxicity levels were generally higher during the dry season than the wet season. It indicated that river pollutants are carried off more quickly by the water during the wet season. As a result, it was recommended that the point sources of pollutants of the Keumho river would be placed between KH3 (Paldalgyo) and KH4 (Keumhogyo), KH4 (Keumhogyo) and KH5 (Dasa).