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The emission of platinum(Pt) from automobile catalytic converters has caused rapid increase in Pt levels of the urban environment. The purpose of this study is to examine the Pt levels in road dusts, roadside soils and tree barks in and around Seoul metropolitan city. All samples were collected from the sites of various traffic volumes, and analysed for Pt and heavy metals by ICP-MS and ICP-OES, respectively. Platinum levels were in the range of 0.4∼444.4 ng/g in road dusts and roadside soils, and 0.9∼4.5 ng/g in tree barks. These results are comparable with other previous studies and show high elevation of Pt levels in urban environment. Platinum levels in the roadside environment are influenced by traffic volume, driving style and topography. There was not significant correlation between Pt and other heavy metals in road dusts.
자동차 촉매 변환장치의 사용으로 인해 도시 환경 매질에서의 백금(Pt; platinum) 함량이 급격히 증가하고 있다. 이 연구에서는 국내 처음으로 도로 분진, 가로수 토양, 가로수 표피에서의 Pt 함량에 대해 알아보았다. 시료들은 서울 시내에 위치한 도로, 주택가 지역과 서울시 근교에서 채취하였으며, Pt의 경우 ICP-MS로, 그 외 중금속의 경우 ICP-OES로 측정하였다. 도로 분진과 가로수 토양 내 Pt 함량은 0.4∼444.4 ng/g 이었으며, 가로수 표피 내 Pt 함량은 0.9∼4.5 ng/g 이었다. 앞서 발표된 국외 연구들과 비슷한 수준이며, 이는 국내 역시 도심의 여러 지역에서 Pt 오염 가능성이 있음을 시사한다. 도로 주변 환경의 Pt 함량에 영향을 미치는 요소로는 교통량, 주행 형태, 지형 등이 있으며, 도로 분진 내 Pt 함량과 상관성을 나타내는 중금속 원소는 존재하지 않았다.
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- Publisher :The Korean Society of Mineral and Energy Resources Engineers
- Publisher(Ko) :한국자원공학회
- Journal Title :Journal of the Korean Society for Geosystem Engineering
- Journal Title(Ko) :한국지구시스템공학회지
- Volume : 43
- No :1
- Pages :84-90
Journal of the Korean Society of Mineral and Energy Resources Engineers
