Pedogentic Jarosite of Acid Sulfate Soil of Gimhae Series I. Some Chemical Characteristics

Jarosite 광물(鑛物)의 토양생성학적(土壤生成學的) 연구(硏究) I. 화학적(化學的) 특성(特性)

  • Published : 1993.12.31

Abstract

Gimhae series has a high content of jarosite mineral which is evoluted in soils from sediments rich in sulfur. Chemical compositions of jarosite mineral and soil samples were analyzed with water and various extraction solutions to evaluate the pedogenetic processes of the soil. The pH of jarosite mineral and $Bg_3$ horizon are below 4.0 and not much changed after incubation of dry samples rich in jarosite. The pedogentic formation of jarosite was identified through the chemical analysis indicating that cations and anion of K, Na, Al and S are present in abandance in $Bg_2$ and $Bg_3$ horizons.

김해통의 Jarosite광물을 화학분석을 통하여 토양 생성학적으로 그 특성을 구명하였다. Jarosite광물이 많이 존재하는 $Bg_2$$Bg_3$ 층의 습토와 건토의 pH는 $Bg_3$와 Jarosite 광물 공히 4.0 이하이였으며, 건토의 항온처리에서도 pH는 크게 변하지 않았다. 여러종류의 염용액으로 침출한 K, Al, Na및 S 등의 이온은 모두 $Bg_2$$Bg_3$층에 많이 분포하여 Jarosite 광물의 형성을 확인할 수 있었다.

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