유구-광천 금은 광화대 지역에서의 토양 및 농작물의 중금속 오염

• 발행기관: 대한자원환경지질학회
• 저자명: 김경웅 백성희 이현구
• 간행물 정보: 『자원환경지질』28권 4호, 389~394쪽, 전체 6쪽
• 주제분류: 자연과학 > 지질학
• 파일형태: PDF
• 발행일자: 1995.08.30

영문 초록

Yugu-Kwangcheon Au-Ag Province is connected to the southwestern part of the Cheonan Province and includes the Gubong(one of the biggest gold mine in past), Daebong and Samgwang mines. Cadmium concentrations in sphalerite of Yugu-Kwangcheon Province is higher than those of other Au-Ag provinces and could be the source of the heavy metal contaminations. Heavy metals are present in rock-soil-plant-human system from natural geological materials, and dietary intake through this system makes a significant contribution to the ingestion of heavy metals by man. In order to examine the degree and extent of heavy metal contaminations in the Gubong and Samgwang mine areas of Yugu-Kwangcheon Province, soil, stream water, sediment and crop plant samples were taken and analyzed for Cd, Cu, Pb and Zn by Atomic Absorption Spectrometry(AAS) and Inductively Coupled Plasma Atomic Emission Spectrometry(ICP-AES). Cadmium and Pb concentrations in paddy/farm soils and stream sediments from the Gubong and Samgwang mine areas are higher than those in uncontaminated soils. Lead concentrations in crop plants cultivated in these soils are high up to 0.38μg/g in sesame. In these mine areas, regular consumption of crop plants by the local population would seem to pose a potential health problems from long-term Pb exposure. The biological absorption coefficient in rice grain for heavy metals varies in the order Cd=Zn>Cu>Pb and the relationship between Cd concentrations in soils and crop plants is expressed by the equation Cdplant=0.11245 Log Cdsoil+0.13472. BACK

키워드

토양 중금속 오염 금은광화대 농작물