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NTIS 바로가기바다 : 한국해양학회지 = The sea : the journal of the Korean society of oceanography, v.25 no.2, 2020년, pp.42 - 53
정혜령 (한국해양과학기술원 해양환경연구센터) , 최진영 (한국해양과학기술원 해양환경연구센터) , 나공태 (한국해양과학기술원 해양환경연구센터)
In this study, heavy metal in road-deposited sediments (RDS) and marine sediment around Gwangyang Bay area have been investigated to assess the pollution status of metals and to understand the environmental impact of RDS as a potential source of metal pollution. Zn concentration for <63 ㎛ siz...
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핵심어 | 질문 | 논문에서 추출한 답변 |
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도로축적퇴적물은 어떤 의의를 가지고 있는가? | 도로축적퇴적물(Road-deposited sediment; RDS)은 중금속, 영양염, 유기물 등의 다양한 오염물질의 주요한 운반 매개체이다(Sutherland, 2003; Ma et al., 2016; Shahsavari et al. | |
산업 및 항만시설에서 유출된 금속 오염물질은 어떤 형태로 유출되는가? | , 2018). 산업 및 항만시설에서 유출되어 포장도로, 건물외벽 등의 불투수층에 쌓여 있는 금속 오염물질은 바람을 통해 비산먼지와 비점오염의 형태로 강우유출수(stormwater or rainfall runoff)를 통해 주변 환경에 큰 영향을 미칠 것으로 예상되나, 이에 대한 연구는 부족하다. 대규모 산업단지 지역의 도로, 아스팔트, 주차장, 건물 지붕 등의 표면에는 중금속 등에 오염된 입자들이 축적 되어있으며, 강우시 비점오염원의 형태로 주변 해양 환경으로 이동한다(Drake et al. | |
도로축적퇴적물 내 중금속의 입자 크기와 농도 간의 관계는? | RDS의 경우 아연(Zn)의 농도가 2,982 mg/kg으로 매우 높았으며, 크롬(Cr)>니켈(Ni)>납(Pb)>구리(Cu)>비소(As)>카드뮴(Cd)>수은(Hg)의 순이었다. RDS의 중금속 농도는 입자가 세립할수록 증가하였으며, 금속폐기물을 취급하는 산업시설 주변에서 상대적으로 높은 농도를 보였다. 125 ㎛ 미만의 입자에서 아연(Zn)이 가장 높은 오염도(very high enrichment)를 나타냈고, Cr, Cd, Pb은 심각한 수준의 오염도(significant enrichment)를 보였다. |
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