Distribution of Iron and Manganese in Terra Rossa from Istria and its Genetic Implications

Durn, Goran; Slovenec, Dragutin; Čović, Marta

doi:10.4154/gc.2001.03

Cited by 25 publications

(2 citation statements)

References 18 publications

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“…Nisbah Fek/ Fe total sebesar 0,17 %. Durn et. al., (2001) menggunakan nilai ratarata nisbah Fek/ Sit sebagai indeks pelapukan tanah yang berasal dari mineral silikat dengan angka 0,7.…”

Section: Tabel 3 Hasil Analisis Al Dan Fe Ekstrak Ditionit Sitrat Dan...unclassified

Analisis Perkembangan Tanah Metode Pelarutan Selektif Dengan Ekstraksi Ditionit Sitrat Bikarbonat, Ammonium Oksalat, Dan Pirofosfat Pada Andisol Puncak Gunung Sumbing Kabupaten Magelang

Simangunsong,

Mulyanto,

Partoyo

2022

JTA

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Puncak Gunung Sumbing memiliki suhu relatif rendah yang mengakibatkan perkembangan tanah terhambat akibat mineral sulit terkristalisasi. Tujuan penelitian ini adalah mengetahui perkembangan Andisol di puncak Gunung Sumbing berdasarkan analisa pelarutan selektif. Sampel tanah diambil pada tanah terpilih kedalaman 20-30 cm (horizon illuviasi) kemudian di analisis di laboratorium. Analisis laboratorium dengan pelarutan selektif yaitu pirofosfat (Al dan Fe), oksalat (Al,Fe, dan Si) dan ditionit sitrat bikarbonat (Al dan Fe). Hasil penelitian menunjukkan bahwa Alp 0,6%, Fep 0,13%, Alo 3,05%, Feo 0,71%, Sio 0,78%, Ald 1,59%, Fed 1,34%, Alt 5,99%, Fet 3,69%, Ferihidrit 1,2%, Alofan 5,53%, Feo/ Fed 0,53%, Fek/ Fea 1,09%, Fek/ Fet 0,17%, Fed/ Feo 1,89%, Sio/ Alt 0,13 dan Alo+0,5Feo 3,4%. Perkembangan tanah masih rendah diakibatkan faktor suhu relatif rendah sehingga kristalisasi terhambat.

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“…Nisbah Fek/ Fe total sebesar 0,17 %. Durn et. al., (2001) menggunakan nilai ratarata nisbah Fek/ Sit sebagai indeks pelapukan tanah yang berasal dari mineral silikat dengan angka 0,7.…”

Section: Tabel 3 Hasil Analisis Al Dan Fe Ekstrak Ditionit Sitrat Dan...unclassified

Analisis Perkembangan Tanah Metode Pelarutan Selektif Dengan Ekstraksi Ditionit Sitrat Bikarbonat, Ammonium Oksalat, Dan Pirofosfat Pada Andisol Puncak Gunung Sumbing Kabupaten Magelang

Simangunsong,

Mulyanto,

Partoyo

2022

JTA

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“…Soil weathering leads to the crystallization of iron and manganese, released from primary minerals, resulting in the formation of new secondary minerals in dry climatic conditions [13]. The Crystallization Index (CI) is considered a genetic standard for classifying iron and manganese crystallization in the soil [14]. The development of iron and manganese crystallization increases as a result of soil-forming factors obtained from the parent material, which is influenced by varying conditions of drought and moisture in the soil [15].…”

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confidence: 99%

Effect of Sedimentary Environment in Iron and Manganese Crystallization Index of some Soil of Anbar Government

Kazim,

Ibrahiem,

Abd ElLatif

2023

IOP Conf. Ser.: Earth Environ. Sci.

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This study was conducted to elucidate the impact of depositional conditions on different sedimentary and desert environments on the crystallization index of iron and manganese. The study area is located within the administrative boundaries of Anbar Governorate. Eight desert valleys were selected, including Al-Qaim Valley, Al-Mohammadi Valley, Al-Damamah Valley, Hauran Valley, Al-Baghdadi Valley, Zaghdan Valley, Al-Sahliyah Valley, and Al-Sheikh Hadeed Valley, with two pedons per site, one in the sedimentary deposits and one in the desert deposits. The samples were prepared for laboratory analysis. Total iron and manganese, non-crystalline iron and manganese oxides, crystalline iron and manganese oxides. Then, the crystallization index was calculated for both iron and manganese elements in both sedimentary and desert soils alike. The results showed that the values of the soil pH in sedimentary soils ranged from 7.12-8.06, while they were recorded in the desert soils with a range of 7.31-8.03. In general, they fell within the limits of basic to highly basic degrees. Electrical conductivity (Ec) was recorded in a range of 0.76-11.80 ds.m-1, which were classified as low salinity to saline soils, as their values decreased with increasing depth in both desert and sedimentary soils are the result of climatic conditions of high temperatures in as well as water and wind additions that helped the accumulation of salts in the surface horizons. The cation exchangeable capacity (CEC) varied between 10.06 and 40.58 cmolc.kg-1, consistently corresponding to the clay content present in the soil. Notably, desert soils exhibited superior crystallization indices for iron and manganese compared to sedimentary soils. However, there was a decline in the crystallization index of iron relative to manganese across all study soils, attributed to the high content of total iron in the parent material, with the presence of a certain pattern in the distribution in the desert soils, where it took a regular distribution with the depth. On another hand, in the sedimentary soils it took a random distribution with the depth due to influence of the sedimentary soils with the movement and transmission of the separate clay through the soil horizons. The ratio of iron to manganese crystallization varied from 0.140 to 14.142 Generally, it increased with depth in desert and sedimentary soils, except for Hauran valley and Al-Baghdadi valley soils, where it decreased due to high total iron content in their parent material.

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Distribution and forms of iron and aluminium oxides in tropical soils of central southwestern Nigeria

Oyebiyi

2024

Environ Earth Sci

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The study examined the composition and forms of iron and aluminium oxides in benchmark soils of central southwestern Nigeria. Soils developed from distinct parent rock types, including coarse-grained granite and gneiss, ne grained biotite gneiss and schist, and the amphibolite complex which correspond to the parent rocks of the soils of Iwo (Typic Paleustults), Egbeda (Rhodic Kandiustults) and Itagunmodi (Typic Haplustults) Associations, respectively, were selected for the study. Notably, these soils collectively encompass approximately 60% of the total land area in central southwestern Nigeria. The less than 2 mm soil fractions were pre-treated with hydrogen peroxide to remove soil organic matter. Thereafter, oxides of Fe and Al were extracted using three different extractants: dithionite-citrate-bicarbonate (DCB) mixtures, acidi ed ammonium oxalate and sodium pyrophosphate solution. The quanti cation of Fe and Al oxides contents in the respective extracts were carried out using Inductively Coupled Plasma -Atomic Emission Spectrometry. The research ndings indicated that the DCB extractable forms of Fe and Al oxides were more abundant compared to other forms of these oxides, and a substantial portion of these oxides within the soils existed in crystalline form. Among the soil series studied, Itagunmodi series exhibited the highest amount of DCB-and oxalate extractable Fe oxides, while Iwo series had the highest content of Fe and Al oxides extracted by sodium pyrophosphate solution. Importantly, the presence of Fe oxides were found to negatively impact the reactivity of SOM in the soils.

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Distribution of Iron and Manganese in Terra Rossa from Istria and its Genetic Implications

Cited by 25 publications

References 18 publications

Analisis Perkembangan Tanah Metode Pelarutan Selektif Dengan Ekstraksi Ditionit Sitrat Bikarbonat, Ammonium Oksalat, Dan Pirofosfat Pada Andisol Puncak Gunung Sumbing Kabupaten Magelang

Analisis Perkembangan Tanah Metode Pelarutan Selektif Dengan Ekstraksi Ditionit Sitrat Bikarbonat, Ammonium Oksalat, Dan Pirofosfat Pada Andisol Puncak Gunung Sumbing Kabupaten Magelang

Effect of Sedimentary Environment in Iron and Manganese Crystallization Index of some Soil of Anbar Government

Distribution and forms of iron and aluminium oxides in tropical soils of central southwestern Nigeria

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