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International Journal of Soil Science
  Year: 2017 | Volume: 12 | Issue: 2 | Page No.: 54-64
DOI: 10.3923/ijss.2017.54.64
 
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Chemical Characteristics and Morphology of Amorphous Materials Derived from Different Parent Materials from Central Java, Indonesia

Nurmili Yuliani, Eko Hanudin and Benito Heru Purwanto

Abstract:
Background and Objective: The lack of information concerning morphology and chemical characteristics of different amorphous materials still there, particularly from Indonesian Andisols. This study was conducted to find out the soil chemical properties, amorphous materials content, infrared spectral characteristics and morphology of amorphous materials derived from different parent materials. Materials and Methods: Three soil samples were collected from B horizon from Mt. Merapi which has an and esitic volcanic ash and Mt. Slamet which has a basaltic volcanic ash (1 soil sample and 1 sediment sample). Soil and sediment samples were analyzed for soil chemical properties such as pH-H2O, pH-KCl, pH-NaF, C-org, CEC, SO4, P retention and F reactivity, Fe-Al-Si with selective dissolution (NH4-oxalate pH3, Nap-pyrophosphate and DCB), IR spectral characteristics and TEM image. Results: The content of allophane, imogolite, ferrihydrite and Al/Si ratio from Mt. Merapi were obtained at range of 15.2-27.3, 2.4-6.8, 0.04-0.06 and 1.14-1.39%, respectively. While soil samples from Mt. Slamet were obtained at range of 15.8-40.5, 0.6-25.6, 0.1-0.6 and 0.1-1.71%, respectively. Infrared spectral characteristics of clay from Mt. Merapi and Mt. Slamet were observed that absorption band peaks appeared at three mean areas, namely: 3433-3456/3417-3456, 1635/1627 and 972-1010/972-987 cm–1, respectively. Allophane possess hollow sphere morphology with a diameter of 2.9-5.0 nm for samples from Mt. Merapi and 3.5-5.4 nm for samples from Mt. Slamet. While imogolite shaped like a long tubes with length of 536-1100 nm for samples from Mt. Merapi and 50-150 nm for Mt. Slamet. Conclusion: In average the content of allophane and imogolite in the soils from Mt. Merapi were higher than from Mt. Slamet, except for clay sediment sample. This sample contains more than 66% of amorphous minerals. Very surprisingly the soil samples from Mt. Merapi are found to contain imogolites of up to 1100 nm length, meaning these are the longest ever immogolites compared to anywhere else.
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How to cite this article:

Nurmili Yuliani, Eko Hanudin and Benito Heru Purwanto, 2017. Chemical Characteristics and Morphology of Amorphous Materials Derived from Different Parent Materials from Central Java, Indonesia. International Journal of Soil Science, 12: 54-64.

DOI: 10.3923/ijss.2017.54.64

URL: https://scialert.net/abstract/?doi=ijss.2017.54.64

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