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NTIS 바로가기韓國鑛物學會誌 = Journal of the Mineralogical Society of Korea, v.27 no.4, 2014년, pp.301 - 310
박승환 (경북대학교 지질학과) , 김영규 (경북대학교 지질학과)
To investigate the role of fault gauge in the behavior of heavy metals caused by the acid rock drainage in the area of pyrite-rich andesite, XRD, pH measurement, XRF, SEM-EDS, ICP, and sequential extraction method were used. Bed rock consists of quartz, pyrophyllite, pyrite, illite, and topaz, but t...
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핵심어 | 질문 | 논문에서 추출한 답변 |
---|---|---|
ICP분석 결과 각 시료의 중금속 농도는 어떻게 나타났는가? | 모암에서 동정된 광물 종으로 보아 모암은 열수 변질 작용을 많이 받은 것으로 보인다. ICP분석 결과 각 시료의 중금속 농도는 모암의 경우 Zn > As > Cu > Pb > Cr > Ni > Cd 순을 보였으며, 단층비지의 경우 As > Zn > Pb > Cr > Cu > Ni > Cd 순으로 나타났다. 두 시료를 비교해 보면 중금속의 총량은 전체적으로 단층비지에서 상대적으로 더 높은 값을 나타내며 특히 Pb, As, Cr은 2배 이상의 큰 차이를 보인다. | |
모암의 주 구성광물로 무엇이 관찰되었는가? | 황철석이 다량 존재하는 지역에서 산성암석배수에 의한 중금속 거동과 관련된 단층비지의 역할을 알아보기 위해, 양산지역에 분포하는 함황철석 안산암의 모암과 단층비지에 대하여 XRD, pH, XRF, SEM-EDS, ICP 분석을 실시하였다. 연구결과 모암의 주 구성광물로 석영(quartz), 엽랍석(pyrophyllite), 황철석(pyrite), 일라이트(illite), 황옥(topaz)이 관찰되었고 짙은 갈색의 단층비지 시료의 경우 석영(quartz), 일라이트(illite), 녹니석(chlorite), 스멕타이트(smectite), 침철석(goethite), 카콕세나이트(cacoxenite)가 동정되었으며 침철석이 주 구성광물이었다. 모암에서 동정된 광물 종으로 보아 모암은 열수 변질 작용을 많이 받은 것으로 보인다. | |
ICP분석 결과 각 시료를 비교해보면 어떤 차이가 있는가? | ICP분석 결과 각 시료의 중금속 농도는 모암의 경우 Zn > As > Cu > Pb > Cr > Ni > Cd 순을 보였으며, 단층비지의 경우 As > Zn > Pb > Cr > Cu > Ni > Cd 순으로 나타났다. 두 시료를 비교해 보면 중금속의 총량은 전체적으로 단층비지에서 상대적으로 더 높은 값을 나타내며 특히 Pb, As, Cr은 2배 이상의 큰 차이를 보인다. 이러한 차이는 단층비지의 주 구성광물인 침철석의 높은 반응성과 넓은 표면적에 의해 Pb, As, Cr과 같은 중금속들이 공침 혹은 흡착되어 특히 높은 농도를 나타내며 또한 황철석의 산화에 의한 낮은 pH에 의하여 이러한 효과가 더욱 증가되었다고 사료된다. |
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