INVESTIGATING THE EFFECT OF GRAIN SIZE AND EXTRACTANT TYPE ON THE DIFFERENT FORMS OF POTASSIUM IN MICACEOUS MINERALS AND POTASSIUM FELDSPARS

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HATAMI H.; KARIMI A.R.; FOTOVAT A.; KHADEMI H.

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Journal: Journal of Water and Soil Conservation Year:2013 | Volume:20 | Issue:1 Page(s): 115-132

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Title

INVESTIGATING THE EFFECT OF GRAIN SIZE AND EXTRACTANT TYPE ON THE DIFFERENT FORMS OF POTASSIUM IN MICACEOUS MINERALS AND POTASSIUM FELDSPARS

Author(s)

HATAMI H. | KARIMI A.R. | FOTOVAT A. | KHADEMI H. | Issue Writer Certificate

Keywords

SILICATE MINERALSQ2

NONEXCHANGEABLE POTASSIUMQ3

AQUA-REGIAQ2

Abstract

Potassium (K) as a macroelement is frequently made available by weathering of aluminosilicates such as K-feldspar and micaceous minerals in the soils. The objectives of this study were to determine the effect of mineral grain size and type of extractant on the different forms of K of micaceous and K-feldspar minerals and to find out a relationship between AQUA-REGIA extractable K and type of K-bearing minerals. Water soluble, exchangeable, non-exchangeable and AQUA-REGIA exteractable K of 50-100 and <50 mm sizes of biotite, phlogopite, muscovite, zanjan and yazd K-feldspars were investigated. The amount of released K was measured by flame photometer. The results indicated that the amounts of soluble and exchangeable K of trioctahedral micas (biotite and phlogopite) and feldspars are not greatly different, but in this regards, diotahedral muscovite is less important even than feldspars. Soil reservoir of non-exchangeable potassium is significantly higher in trioctahedral micas (up to 17 g kg-1) than muscovite and feldspars (up to 3 g kg-1). The small particles (<50 mm) had a significant effect on the different forms of K in all minerals. The amount of AQUA-REGIA extractable K from trioctahedral micas exceed to 81 g kg-1. This value was 4 g kg-1 for other minerals. The mineral size had no effect on the AQUA-REGIA extractable K in trioctahedral micas while in muscovite and feldspars this form of K increase up to 3.5 times with particle size reduction. More investigations are necessary to propose AQUA-REGIA extractable K as an indicator for assessing type and amount of K-bearing minerals and soil potassium supplying power.

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APA: Copy

HATAMI, H., KARIMI, A.R., FOTOVAT, A., & KHADEMI, H.. (2013). INVESTIGATING THE EFFECT OF GRAIN SIZE AND EXTRACTANT TYPE ON THE DIFFERENT FORMS OF POTASSIUM IN MICACEOUS MINERALS AND POTASSIUM FELDSPARS. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 20(1), 115-132. SID. https://sid.ir/paper/156042/en

Vancouver: Copy

HATAMI H., KARIMI A.R., FOTOVAT A., KHADEMI H.. INVESTIGATING THE EFFECT OF GRAIN SIZE AND EXTRACTANT TYPE ON THE DIFFERENT FORMS OF POTASSIUM IN MICACEOUS MINERALS AND POTASSIUM FELDSPARS. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2013;20(1):115-132. Available from: https://sid.ir/paper/156042/en

IEEE: Copy

H. HATAMI, A.R. KARIMI, A. FOTOVAT, and H. KHADEMI, “INVESTIGATING THE EFFECT OF GRAIN SIZE AND EXTRACTANT TYPE ON THE DIFFERENT FORMS OF POTASSIUM IN MICACEOUS MINERALS AND POTASSIUM FELDSPARS,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 20, no. 1, pp. 115–132, 2013, [Online]. Available: https://sid.ir/paper/156042/en

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